./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur --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 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:06:17,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:06:17,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:06:17,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:06:17,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:06:17,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:06:17,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:06:17,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:06:17,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:06:17,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:06:17,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:06:17,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:06:17,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:06:17,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:06:17,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:06:17,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:06:17,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:06:17,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:06:17,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:06:17,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:06:17,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:06:17,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:06:17,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:06:17,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:06:17,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:06:17,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:06:17,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:06:17,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:06:17,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:06:17,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:06:17,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:06:17,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:06:17,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:06:17,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:06:17,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:06:17,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:06:17,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:06:17,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:06:17,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:06:17,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:06:17,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:06:17,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 01:06:17,417 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:06:17,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:06:17,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:06:17,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:06:17,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:06:17,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:06:17,420 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:06:17,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:06:17,420 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:06:17,420 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:06:17,421 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:06:17,421 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:06:17,421 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:06:17,421 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:06:17,422 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:06:17,422 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:06:17,422 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:06:17,422 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:06:17,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:06:17,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:06:17,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:06:17,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:06:17,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:06:17,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:06:17,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:06:17,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:06:17,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:06:17,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:06:17,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:06:17,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:06:17,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:06:17,431 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:06:17,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:06:17,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:06:17,432 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:06:17,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:06:17,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:06:17,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:06:17,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a [2022-11-26 01:06:17,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:06:17,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:06:17,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:06:17,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:06:17,786 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:06:17,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2022-11-26 01:06:21,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:06:22,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:06:22,272 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2022-11-26 01:06:22,307 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/data/c206359e1/7f7a4374342b4be3b8af335f3f80ae50/FLAGe7ead8ea7 [2022-11-26 01:06:22,326 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/data/c206359e1/7f7a4374342b4be3b8af335f3f80ae50 [2022-11-26 01:06:22,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:06:22,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:06:22,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:06:22,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:06:22,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:06:22,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:06:22" (1/1) ... [2022-11-26 01:06:22,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9cfd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:22, skipping insertion in model container [2022-11-26 01:06:22,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:06:22" (1/1) ... [2022-11-26 01:06:22,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:06:22,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:06:22,896 WARN L237 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_0ac81fff-2b67-44be-a1e6-865029c2821f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2022-11-26 01:06:22,908 WARN L237 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_0ac81fff-2b67-44be-a1e6-865029c2821f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2022-11-26 01:06:24,016 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:06:24,030 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,031 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,032 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,033 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,035 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,089 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,090 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,092 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,093 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,107 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,108 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,109 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,110 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,245 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:06:24,254 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:06:24,256 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:06:24,263 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 01:06:24,266 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 01:06:24,273 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 01:06:24,598 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 01:06:24,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 01:06:24,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 01:06:24,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 01:06:24,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 01:06:24,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 01:06:24,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 01:06:24,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 01:06:24,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 01:06:24,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 01:06:24,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 01:06:24,800 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 01:06:24,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:06:24,850 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:06:24,868 WARN L237 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_0ac81fff-2b67-44be-a1e6-865029c2821f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2022-11-26 01:06:24,868 WARN L237 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_0ac81fff-2b67-44be-a1e6-865029c2821f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2022-11-26 01:06:24,938 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:06:24,942 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,943 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,943 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,944 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,945 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,955 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,970 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,972 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,973 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,974 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,975 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,976 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,976 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:06:24,985 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:06:24,999 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:06:25,000 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:06:25,004 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 01:06:25,014 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 01:06:25,015 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 01:06:25,070 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 01:06:25,073 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 01:06:25,075 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 01:06:25,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 01:06:25,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 01:06:25,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 01:06:25,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 01:06:25,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 01:06:25,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 01:06:25,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 01:06:25,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 01:06:25,148 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 01:06:25,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:06:25,493 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:06:25,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25 WrapperNode [2022-11-26 01:06:25,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:06:25,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:06:25,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:06:25,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:06:25,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,647 INFO L138 Inliner]: procedures = 679, calls = 1047, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 151 [2022-11-26 01:06:25,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:06:25,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:06:25,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:06:25,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:06:25,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:06:25,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:06:25,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:06:25,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:06:25,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (1/1) ... [2022-11-26 01:06:25,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:06:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:06:25,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:06:25,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:06:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:06:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 01:06:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 01:06:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-26 01:06:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-26 01:06:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 01:06:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-26 01:06:25,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-26 01:06:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:06:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 01:06:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2022-11-26 01:06:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2022-11-26 01:06:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:06:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:06:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 01:06:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 01:06:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:06:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 01:06:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 01:06:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-26 01:06:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-26 01:06:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-11-26 01:06:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-11-26 01:06:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:06:26,249 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:06:26,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:06:26,705 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:06:26,898 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:06:26,899 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 01:06:26,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:26 BoogieIcfgContainer [2022-11-26 01:06:26,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:06:26,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:06:26,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:06:26,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:06:26,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:06:22" (1/3) ... [2022-11-26 01:06:26,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe9493e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:06:26, skipping insertion in model container [2022-11-26 01:06:26,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:25" (2/3) ... [2022-11-26 01:06:26,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe9493e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:06:26, skipping insertion in model container [2022-11-26 01:06:26,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:26" (3/3) ... [2022-11-26 01:06:26,922 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_front_harness.i [2022-11-26 01:06:26,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:06:26,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:06:27,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:06:27,032 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c601446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:06:27,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:06:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-26 01:06:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-26 01:06:27,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:27,050 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:06:27,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:06:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash -493936375, now seen corresponding path program 1 times [2022-11-26 01:06:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:06:27,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004286815] [2022-11-26 01:06:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:27,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:06:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-26 01:06:28,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:06:28,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004286815] [2022-11-26 01:06:28,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004286815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:06:28,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003070813] [2022-11-26 01:06:28,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:28,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:06:28,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:06:28,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:06:28,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:06:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:28,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 01:06:28,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 01:06:29,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:06:29,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003070813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:06:29,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:06:29,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2022-11-26 01:06:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422885040] [2022-11-26 01:06:29,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:06:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 01:06:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:06:29,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 01:06:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:06:29,087 INFO L87 Difference]: Start difference. First operand has 75 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-26 01:06:29,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:06:29,502 INFO L93 Difference]: Finished difference Result 144 states and 209 transitions. [2022-11-26 01:06:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 01:06:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 43 [2022-11-26 01:06:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:06:29,526 INFO L225 Difference]: With dead ends: 144 [2022-11-26 01:06:29,526 INFO L226 Difference]: Without dead ends: 76 [2022-11-26 01:06:29,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:06:29,537 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 21 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:06:29,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 398 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:06:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-26 01:06:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-11-26 01:06:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2022-11-26 01:06:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2022-11-26 01:06:29,634 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 43 [2022-11-26 01:06:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:06:29,635 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2022-11-26 01:06:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-26 01:06:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2022-11-26 01:06:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-26 01:06:29,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:29,640 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:06:29,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:06:29,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-26 01:06:29,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:06:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -528960891, now seen corresponding path program 1 times [2022-11-26 01:06:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:06:29,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664541474] [2022-11-26 01:06:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:29,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:06:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-26 01:06:30,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:06:30,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664541474] [2022-11-26 01:06:30,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664541474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:06:30,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290003050] [2022-11-26 01:06:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:30,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:06:30,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:06:30,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:06:30,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:06:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:30,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-26 01:06:30,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 01:06:31,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:06:31,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290003050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:06:31,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:06:31,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 10 [2022-11-26 01:06:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279191166] [2022-11-26 01:06:31,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:06:31,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:06:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:06:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:06:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:06:31,029 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-26 01:06:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:06:31,382 INFO L93 Difference]: Finished difference Result 145 states and 198 transitions. [2022-11-26 01:06:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 01:06:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 45 [2022-11-26 01:06:31,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:06:31,385 INFO L225 Difference]: With dead ends: 145 [2022-11-26 01:06:31,385 INFO L226 Difference]: Without dead ends: 79 [2022-11-26 01:06:31,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:06:31,388 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 22 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:06:31,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 415 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:06:31,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-26 01:06:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-11-26 01:06:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2022-11-26 01:06:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2022-11-26 01:06:31,404 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 45 [2022-11-26 01:06:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:06:31,405 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2022-11-26 01:06:31,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-26 01:06:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2022-11-26 01:06:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-26 01:06:31,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:31,407 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:06:31,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 01:06:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:06:31,618 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:06:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1886202449, now seen corresponding path program 1 times [2022-11-26 01:06:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:06:31,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047821055] [2022-11-26 01:06:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:06:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-26 01:06:32,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:06:32,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047821055] [2022-11-26 01:06:32,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047821055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:06:32,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:06:32,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 01:06:32,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067522452] [2022-11-26 01:06:32,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:06:32,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 01:06:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:06:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 01:06:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 01:06:32,072 INFO L87 Difference]: Start difference. First operand 76 states and 103 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-26 01:06:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:06:32,228 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2022-11-26 01:06:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 01:06:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 47 [2022-11-26 01:06:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:06:32,229 INFO L225 Difference]: With dead ends: 99 [2022-11-26 01:06:32,230 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 01:06:32,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:06:32,235 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:06:32,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 78 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:06:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 01:06:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 01:06:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 01:06:32,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-11-26 01:06:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:06:32,243 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 01:06:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-26 01:06:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 01:06:32,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 01:06:32,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 01:06:32,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:06:32,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 01:06:32,413 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validEXIT(lines 4715 4719) no Hoare annotation was computed. [2022-11-26 01:06:32,413 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_node_next_is_validENTRY(lines 4715 4719) the Hoare annotation is: true [2022-11-26 01:06:32,414 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validEXIT(lines 4726 4730) no Hoare annotation was computed. [2022-11-26 01:06:32,414 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_node_prev_is_validENTRY(lines 4726 4730) the Hoare annotation is: true [2022-11-26 01:06:32,414 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-26 01:06:32,414 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-26 01:06:32,415 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-11-26 01:06:32,415 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-11-26 01:06:32,415 INFO L902 garLoopResultBuilder]: At program point L4923(line 4923) the Hoare annotation is: true [2022-11-26 01:06:32,415 INFO L902 garLoopResultBuilder]: At program point L4922(line 4922) the Hoare annotation is: true [2022-11-26 01:06:32,416 INFO L899 garLoopResultBuilder]: For program point L4923-1(line 4923) no Hoare annotation was computed. [2022-11-26 01:06:32,416 INFO L902 garLoopResultBuilder]: At program point L4920-1(line 4920) the Hoare annotation is: true [2022-11-26 01:06:32,416 INFO L899 garLoopResultBuilder]: For program point L4921-2(line 4921) no Hoare annotation was computed. [2022-11-26 01:06:32,416 INFO L899 garLoopResultBuilder]: For program point L4920-2(line 4920) no Hoare annotation was computed. [2022-11-26 01:06:32,416 INFO L902 garLoopResultBuilder]: At program point L4921(line 4921) the Hoare annotation is: true [2022-11-26 01:06:32,417 INFO L902 garLoopResultBuilder]: At program point L4922-1(line 4922) the Hoare annotation is: true [2022-11-26 01:06:32,417 INFO L902 garLoopResultBuilder]: At program point L4920(line 4920) the Hoare annotation is: true [2022-11-26 01:06:32,417 INFO L902 garLoopResultBuilder]: At program point L4921-1(line 4921) the Hoare annotation is: true [2022-11-26 01:06:32,417 INFO L899 garLoopResultBuilder]: For program point L4922-2(line 4922) no Hoare annotation was computed. [2022-11-26 01:06:32,418 INFO L902 garLoopResultBuilder]: At program point L4912-1(line 4912) the Hoare annotation is: true [2022-11-26 01:06:32,418 INFO L899 garLoopResultBuilder]: For program point L4912-2(line 4912) no Hoare annotation was computed. [2022-11-26 01:06:32,418 INFO L902 garLoopResultBuilder]: At program point L4913(lines 4913 4915) the Hoare annotation is: true [2022-11-26 01:06:32,418 INFO L902 garLoopResultBuilder]: At program point L4912(line 4912) the Hoare annotation is: true [2022-11-26 01:06:32,418 INFO L899 garLoopResultBuilder]: For program point L4913-1(lines 4913 4915) no Hoare annotation was computed. [2022-11-26 01:06:32,419 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_insert_beforeENTRY(lines 4909 4924) the Hoare annotation is: true [2022-11-26 01:06:32,419 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeEXIT(lines 4909 4924) no Hoare annotation was computed. [2022-11-26 01:06:32,419 INFO L895 garLoopResultBuilder]: At program point L4990(line 4990) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0)) (not (= |ULTIMATE.start_aws_linked_list_push_front_~list#1.base| 0))) [2022-11-26 01:06:32,420 INFO L899 garLoopResultBuilder]: For program point L4994-1(line 4994) no Hoare annotation was computed. [2022-11-26 01:06:32,420 INFO L895 garLoopResultBuilder]: At program point L4990-1(line 4990) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (= |ULTIMATE.start_aws_linked_list_push_front_#t~ret400#1| 0)) [2022-11-26 01:06:32,420 INFO L899 garLoopResultBuilder]: For program point L7389-1(line 7389) no Hoare annotation was computed. [2022-11-26 01:06:32,420 INFO L899 garLoopResultBuilder]: For program point L4990-2(line 4990) no Hoare annotation was computed. [2022-11-26 01:06:32,421 INFO L895 garLoopResultBuilder]: At program point L7389(line 7389) the Hoare annotation is: false [2022-11-26 01:06:32,421 INFO L895 garLoopResultBuilder]: At program point L4995(line 4995) the Hoare annotation is: false [2022-11-26 01:06:32,421 INFO L895 garLoopResultBuilder]: At program point L4995-1(line 4995) the Hoare annotation is: false [2022-11-26 01:06:32,421 INFO L895 garLoopResultBuilder]: At program point L4991(lines 4991 4993) the Hoare annotation is: false [2022-11-26 01:06:32,422 INFO L895 garLoopResultBuilder]: At program point L7390(line 7390) the Hoare annotation is: false [2022-11-26 01:06:32,422 INFO L899 garLoopResultBuilder]: For program point L4991-1(lines 4991 4993) no Hoare annotation was computed. [2022-11-26 01:06:32,422 INFO L899 garLoopResultBuilder]: For program point L4995-2(line 4995) no Hoare annotation was computed. [2022-11-26 01:06:32,422 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 01:06:32,422 INFO L895 garLoopResultBuilder]: At program point L7386(line 7386) the Hoare annotation is: false [2022-11-26 01:06:32,423 INFO L895 garLoopResultBuilder]: At program point L7390-1(line 7390) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|)) [2022-11-26 01:06:32,423 INFO L899 garLoopResultBuilder]: For program point L7386-2(line 7386) no Hoare annotation was computed. [2022-11-26 01:06:32,423 INFO L895 garLoopResultBuilder]: At program point L7386-1(line 7386) the Hoare annotation is: false [2022-11-26 01:06:32,423 INFO L895 garLoopResultBuilder]: At program point L6767-3(lines 6767 6774) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2022-11-26 01:06:32,424 INFO L899 garLoopResultBuilder]: For program point L6755-1(line 6755) no Hoare annotation was computed. [2022-11-26 01:06:32,424 INFO L899 garLoopResultBuilder]: For program point L4996-1(line 4996) no Hoare annotation was computed. [2022-11-26 01:06:32,424 INFO L895 garLoopResultBuilder]: At program point L6755(line 6755) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2022-11-26 01:06:32,424 INFO L895 garLoopResultBuilder]: At program point L4996(line 4996) the Hoare annotation is: false [2022-11-26 01:06:32,425 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 01:06:32,425 INFO L895 garLoopResultBuilder]: At program point L7387-1(line 7387) the Hoare annotation is: false [2022-11-26 01:06:32,425 INFO L895 garLoopResultBuilder]: At program point L7387(line 7387) the Hoare annotation is: false [2022-11-26 01:06:32,425 INFO L899 garLoopResultBuilder]: For program point L7387-2(line 7387) no Hoare annotation was computed. [2022-11-26 01:06:32,426 INFO L899 garLoopResultBuilder]: For program point L6756-1(line 6756) no Hoare annotation was computed. [2022-11-26 01:06:32,426 INFO L895 garLoopResultBuilder]: At program point L6756(line 6756) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2022-11-26 01:06:32,426 INFO L899 garLoopResultBuilder]: For program point L7388-2(line 7388) no Hoare annotation was computed. [2022-11-26 01:06:32,426 INFO L895 garLoopResultBuilder]: At program point L7388-1(line 7388) the Hoare annotation is: false [2022-11-26 01:06:32,426 INFO L895 garLoopResultBuilder]: At program point L7388(line 7388) the Hoare annotation is: false [2022-11-26 01:06:32,427 INFO L895 garLoopResultBuilder]: At program point L4994(line 4994) the Hoare annotation is: false [2022-11-26 01:06:32,427 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-26 01:06:32,427 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-26 01:06:32,427 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-26 01:06:32,428 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-26 01:06:32,428 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-26 01:06:32,428 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-26 01:06:32,428 INFO L899 garLoopResultBuilder]: For program point L4734(lines 4734 4738) no Hoare annotation was computed. [2022-11-26 01:06:32,429 INFO L899 garLoopResultBuilder]: For program point L4751(lines 4751 4761) no Hoare annotation was computed. [2022-11-26 01:06:32,429 INFO L895 garLoopResultBuilder]: At program point L4764(lines 4731 4765) the Hoare annotation is: (or (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) (= |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_#res#1| 0)) [2022-11-26 01:06:32,429 INFO L899 garLoopResultBuilder]: For program point L4756-1(lines 4756 4761) no Hoare annotation was computed. [2022-11-26 01:06:32,429 INFO L895 garLoopResultBuilder]: At program point L4756(line 4756) the Hoare annotation is: (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) [2022-11-26 01:06:32,430 INFO L899 garLoopResultBuilder]: For program point L4694-11(lines 4694 4704) no Hoare annotation was computed. [2022-11-26 01:06:32,430 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_validEXIT(lines 4691 4708) no Hoare annotation was computed. [2022-11-26 01:06:32,430 INFO L902 garLoopResultBuilder]: At program point aws_linked_list_is_validENTRY(lines 4691 4708) the Hoare annotation is: true [2022-11-26 01:06:32,430 INFO L899 garLoopResultBuilder]: For program point aws_linked_list_is_validFINAL(lines 4691 4708) no Hoare annotation was computed. [2022-11-26 01:06:32,431 INFO L899 garLoopResultBuilder]: For program point L4750-3(lines 4750 4763) no Hoare annotation was computed. [2022-11-26 01:06:32,431 INFO L895 garLoopResultBuilder]: At program point L4750-2(lines 4750 4763) the Hoare annotation is: (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) [2022-11-26 01:06:32,435 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 01:06:32,438 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:06:32,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:06:32 BoogieIcfgContainer [2022-11-26 01:06:32,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:06:32,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:06:32,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:06:32,458 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:06:32,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:26" (3/4) ... [2022-11-26 01:06:32,463 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 01:06:32,469 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2022-11-26 01:06:32,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-11-26 01:06:32,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2022-11-26 01:06:32,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_insert_before [2022-11-26 01:06:32,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-26 01:06:32,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-26 01:06:32,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_is_valid [2022-11-26 01:06:32,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2022-11-26 01:06:32,479 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-26 01:06:32,479 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-26 01:06:32,480 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 01:06:32,514 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((list == 0 && list == list) && list == list) || \result == 0 [2022-11-26 01:06:32,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 01:06:32,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:06:32,546 INFO L158 Benchmark]: Toolchain (without parser) took 10215.06ms. Allocated memory was 190.8MB in the beginning and 245.4MB in the end (delta: 54.5MB). Free memory was 140.1MB in the beginning and 105.3MB in the end (delta: 34.8MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,547 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:06:32,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3161.43ms. Allocated memory is still 190.8MB. Free memory was 140.0MB in the beginning and 137.5MB in the end (delta: 2.6MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.30ms. Allocated memory is still 190.8MB. Free memory was 137.5MB in the beginning and 132.1MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,548 INFO L158 Benchmark]: Boogie Preprocessor took 54.23ms. Allocated memory is still 190.8MB. Free memory was 132.1MB in the beginning and 128.0MB in the end (delta: 4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,548 INFO L158 Benchmark]: RCFGBuilder took 1198.63ms. Allocated memory is still 190.8MB. Free memory was 128.0MB in the beginning and 84.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,549 INFO L158 Benchmark]: TraceAbstraction took 5548.68ms. Allocated memory was 190.8MB in the beginning and 245.4MB in the end (delta: 54.5MB). Free memory was 83.0MB in the beginning and 110.6MB in the end (delta: -27.7MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,549 INFO L158 Benchmark]: Witness Printer took 87.62ms. Allocated memory is still 245.4MB. Free memory was 110.6MB in the beginning and 105.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-26 01:06:32,552 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 134.2MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3161.43ms. Allocated memory is still 190.8MB. Free memory was 140.0MB in the beginning and 137.5MB in the end (delta: 2.6MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 152.30ms. Allocated memory is still 190.8MB. Free memory was 137.5MB in the beginning and 132.1MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.23ms. Allocated memory is still 190.8MB. Free memory was 132.1MB in the beginning and 128.0MB in the end (delta: 4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1198.63ms. Allocated memory is still 190.8MB. Free memory was 128.0MB in the beginning and 84.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5548.68ms. Allocated memory was 190.8MB in the beginning and 245.4MB in the end (delta: 54.5MB). Free memory was 83.0MB in the beginning and 110.6MB in the end (delta: -27.7MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Witness Printer took 87.62ms. Allocated memory is still 245.4MB. Free memory was 110.6MB in the beginning and 105.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 891 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 705 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 378 IncrementalHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 186 mSDtfsCounter, 378 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 24, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 149 PreInvPairs, 154 NumberOfFragments, 120 HoareAnnotationTreeSize, 149 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1223 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 104/110 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4750]: Loop Invariant Derived loop invariant: (list == 0 && list == list) && list == list - InvariantResult [Line: 4731]: Loop Invariant Derived loop invariant: ((list == 0 && list == list) && list == list) || \result == 0 - InvariantResult [Line: 7390]: Loop Invariant Derived loop invariant: 2 <= node && 2 <= to_add - InvariantResult [Line: 6767]: Loop Invariant Derived loop invariant: 2 <= to_add && !(list == 0) RESULT: Ultimate proved your program to be correct! [2022-11-26 01:06:32,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac81fff-2b67-44be-a1e6-865029c2821f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE