./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:44:21,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:44:21,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:44:21,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:44:21,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:44:21,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:44:21,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:44:21,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:44:21,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:44:21,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:44:21,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:44:21,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:44:21,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:44:21,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:44:21,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:44:21,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:44:21,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:44:21,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:44:21,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:44:21,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:44:21,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:44:21,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:44:21,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:44:21,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:44:21,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:44:21,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:44:21,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:44:21,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:44:21,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:44:21,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:44:21,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:44:21,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:44:21,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:44:21,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:44:21,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:44:21,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:44:21,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:44:21,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:44:21,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:44:21,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:44:21,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:44:21,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:44:21,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:44:21,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:44:21,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:44:21,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:44:21,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:44:21,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:44:21,462 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:44:21,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:44:21,462 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:44:21,462 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:44:21,463 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:44:21,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:44:21,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:44:21,464 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:44:21,464 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:44:21,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:44:21,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:44:21,465 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:44:21,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:44:21,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:44:21,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:44:21,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:44:21,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:44:21,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:44:21,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:44:21,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:44:21,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:44:21,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:44:21,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:44:21,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:44:21,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:44:21,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:44:21,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:44:21,469 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:44:21,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:44:21,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:44:21,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:44:21,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:44:21,470 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_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e [2021-11-25 17:44:21,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:44:21,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:44:21,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:44:21,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:44:21,843 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:44:21,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-25 17:44:21,949 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/data/f7755bb08/c99c8278273b47e193aa6fca9d121276/FLAG5765c8710 [2021-11-25 17:44:22,872 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:44:22,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-25 17:44:22,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/data/f7755bb08/c99c8278273b47e193aa6fca9d121276/FLAG5765c8710 [2021-11-25 17:44:23,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/data/f7755bb08/c99c8278273b47e193aa6fca9d121276 [2021-11-25 17:44:23,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:44:23,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:44:23,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:44:23,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:44:23,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:44:23,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:23" (1/1) ... [2021-11-25 17:44:23,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fea6b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:23, skipping insertion in model container [2021-11-25 17:44:23,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:23" (1/1) ... [2021-11-25 17:44:23,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:44:23,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:44:23,811 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_a6879a87-8781-4180-9cff-3586511a8273/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-25 17:44:23,818 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_a6879a87-8781-4180-9cff-3586511a8273/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-25 17:44:24,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:24,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,301 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 17:44:25,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 17:44:25,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 17:44:25,305 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 17:44:25,307 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 17:44:25,308 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 17:44:25,309 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 17:44:25,309 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 17:44:25,310 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 17:44:25,311 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 17:44:25,465 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 17:44:25,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:44:25,510 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:44:25,549 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_a6879a87-8781-4180-9cff-3586511a8273/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-25 17:44:25,551 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_a6879a87-8781-4180-9cff-3586511a8273/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-25 17:44:25,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,621 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,637 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 17:44:25,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 17:44:25,713 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 17:44:25,719 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 17:44:25,720 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 17:44:25,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 17:44:25,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 17:44:25,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 17:44:25,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 17:44:25,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 17:44:25,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 17:44:25,759 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 17:44:25,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:44:26,119 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:44:26,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26 WrapperNode [2021-11-25 17:44:26,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:44:26,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:44:26,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:44:26,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:44:26,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,307 INFO L137 Inliner]: procedures = 679, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 58 [2021-11-25 17:44:26,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:44:26,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:44:26,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:44:26,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:44:26,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:44:26,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:44:26,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:44:26,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:44:26,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (1/1) ... [2021-11-25 17:44:26,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:44:26,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:26,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:44:26,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:44:26,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:44:26,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 17:44:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 17:44:26,483 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 17:44:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 17:44:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:44:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:44:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:44:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:44:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 17:44:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 17:44:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:44:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:44:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:44:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-25 17:44:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-25 17:44:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:44:26,773 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:44:26,775 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:44:26,992 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:44:27,092 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:44:27,092 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:44:27,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:27 BoogieIcfgContainer [2021-11-25 17:44:27,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:44:27,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:44:27,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:44:27,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:44:27,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:44:23" (1/3) ... [2021-11-25 17:44:27,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53db2973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:27, skipping insertion in model container [2021-11-25 17:44:27,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:26" (2/3) ... [2021-11-25 17:44:27,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53db2973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:27, skipping insertion in model container [2021-11-25 17:44:27,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:27" (3/3) ... [2021-11-25 17:44:27,115 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness.i [2021-11-25 17:44:27,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:44:27,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:44:27,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:44:27,195 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:44:27,196 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 17:44:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 17:44:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 17:44:27,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:27,224 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:44:27,224 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:44:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1641023013, now seen corresponding path program 1 times [2021-11-25 17:44:27,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:27,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334640623] [2021-11-25 17:44:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:27,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:44:28,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:28,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334640623] [2021-11-25 17:44:28,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334640623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:28,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:28,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:44:28,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019566445] [2021-11-25 17:44:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:28,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:44:28,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:44:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:44:28,157 INFO L87 Difference]: Start difference. First operand has 33 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 17:44:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:28,457 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-25 17:44:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:44:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2021-11-25 17:44:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:28,473 INFO L225 Difference]: With dead ends: 62 [2021-11-25 17:44:28,473 INFO L226 Difference]: Without dead ends: 35 [2021-11-25 17:44:28,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:44:28,489 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:28,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:44:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-25 17:44:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-25 17:44:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 17:44:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-11-25 17:44:28,555 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2021-11-25 17:44:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:28,556 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-11-25 17:44:28,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 17:44:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-11-25 17:44:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 17:44:28,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:28,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:44:28,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:44:28,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:44:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1604551445, now seen corresponding path program 1 times [2021-11-25 17:44:28,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:28,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277512082] [2021-11-25 17:44:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:28,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:44:29,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277512082] [2021-11-25 17:44:29,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277512082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:29,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277082110] [2021-11-25 17:44:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:29,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:29,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:29,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:29,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:44:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:29,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-25 17:44:29,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:44:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:29,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:29,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 17:44:29,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:29,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 17:44:29,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:29,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 17:44:29,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 17:44:29,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-11-25 17:44:29,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-25 17:44:32,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:32,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 17:44:32,942 INFO L354 Elim1Store]: treesize reduction 71, result has 24.5 percent of original size [2021-11-25 17:44:32,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 315 treesize of output 175 [2021-11-25 17:44:32,990 INFO L354 Elim1Store]: treesize reduction 74, result has 8.6 percent of original size [2021-11-25 17:44:32,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 60 [2021-11-25 17:44:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:44:33,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:44:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:44:38,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277082110] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:44:38,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [584763484] [2021-11-25 17:44:38,403 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 17:44:38,404 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:44:38,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:44:38,415 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:44:38,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:44:38,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,636 INFO L354 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2021-11-25 17:44:38,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 101 [2021-11-25 17:44:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 75 [2021-11-25 17:44:38,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 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 [2021-11-25 17:44:38,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 75 [2021-11-25 17:44:38,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:38,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 23 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 51 [2021-11-25 17:44:38,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 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 [2021-11-25 17:44:39,799 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2021-11-25 17:44:39,813 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 19 for LOIs [2021-11-25 17:44:39,817 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 15 for LOIs [2021-11-25 17:44:39,920 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 164 for LOIs [2021-11-25 17:44:40,084 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:44:42,220 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '364#(and (<= 0 |__VERIFIER_assert_#in~cond|) (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (= 5 |~#s_can_fail_allocator_static~0.base|) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 17:44:42,220 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:44:42,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:44:42,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 32 [2021-11-25 17:44:42,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941188216] [2021-11-25 17:44:42,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:44:42,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 17:44:42,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 17:44:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2243, Unknown=0, NotChecked=0, Total=2450 [2021-11-25 17:44:42,225 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 32 states, 16 states have (on average 2.25) internal successors, (36), 25 states have internal predecessors, (36), 14 states have call successors, (17), 4 states have call predecessors, (17), 11 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-25 17:44:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:42,764 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-11-25 17:44:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:44:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 16 states have (on average 2.25) internal successors, (36), 25 states have internal predecessors, (36), 14 states have call successors, (17), 4 states have call predecessors, (17), 11 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) Word has length 24 [2021-11-25 17:44:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:42,766 INFO L225 Difference]: With dead ends: 45 [2021-11-25 17:44:42,766 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 17:44:42,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=246, Invalid=2834, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 17:44:42,769 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:42,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 294 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 245 Invalid, 0 Unknown, 98 Unchecked, 0.3s Time] [2021-11-25 17:44:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 17:44:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 17:44:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 17:44:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-11-25 17:44:42,779 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 24 [2021-11-25 17:44:42,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:42,780 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-11-25 17:44:42,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 16 states have (on average 2.25) internal successors, (36), 25 states have internal predecessors, (36), 14 states have call successors, (17), 4 states have call predecessors, (17), 11 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-25 17:44:42,780 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-11-25 17:44:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 17:44:42,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:42,782 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:44:42,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:44:43,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:43,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:44:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1133002952, now seen corresponding path program 1 times [2021-11-25 17:44:43,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426447125] [2021-11-25 17:44:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:43,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:44:43,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:43,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426447125] [2021-11-25 17:44:43,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426447125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:43,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:43,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:44:43,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343110508] [2021-11-25 17:44:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:43,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:44:43,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:44:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:44:43,187 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 17:44:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:43,283 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-11-25 17:44:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:44:43,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2021-11-25 17:44:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:43,285 INFO L225 Difference]: With dead ends: 49 [2021-11-25 17:44:43,285 INFO L226 Difference]: Without dead ends: 47 [2021-11-25 17:44:43,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:44:43,286 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:43,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 117 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:44:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-25 17:44:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-25 17:44:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 17:44:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-11-25 17:44:43,297 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 30 [2021-11-25 17:44:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:43,298 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-11-25 17:44:43,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 17:44:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-11-25 17:44:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 17:44:43,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:43,300 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:44:43,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:44:43,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:44:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash 109870167, now seen corresponding path program 1 times [2021-11-25 17:44:43,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:43,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788935937] [2021-11-25 17:44:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:43,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 17:44:43,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788935937] [2021-11-25 17:44:43,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788935937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:43,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:43,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:44:43,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180552850] [2021-11-25 17:44:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:43,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:44:43,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:44:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:44:43,645 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 17:44:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:43,797 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-11-25 17:44:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:44:43,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2021-11-25 17:44:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:43,798 INFO L225 Difference]: With dead ends: 53 [2021-11-25 17:44:43,799 INFO L226 Difference]: Without dead ends: 51 [2021-11-25 17:44:43,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:44:43,800 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:43,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 114 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:44:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-25 17:44:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-25 17:44:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 17:44:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-25 17:44:43,811 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 39 [2021-11-25 17:44:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:43,811 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-25 17:44:43,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 17:44:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-25 17:44:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 17:44:43,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:43,814 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2021-11-25 17:44:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:44:43,814 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:44:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 178568451, now seen corresponding path program 1 times [2021-11-25 17:44:43,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:43,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172754130] [2021-11-25 17:44:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:43,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 17:44:44,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:44,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172754130] [2021-11-25 17:44:44,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172754130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:44,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:44,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:44:44,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096313032] [2021-11-25 17:44:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:44,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:44:44,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:44:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:44:44,269 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-25 17:44:44,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:44,558 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-11-25 17:44:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:44:44,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 48 [2021-11-25 17:44:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:44,560 INFO L225 Difference]: With dead ends: 57 [2021-11-25 17:44:44,560 INFO L226 Difference]: Without dead ends: 53 [2021-11-25 17:44:44,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:44:44,561 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:44,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 131 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:44:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-25 17:44:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-25 17:44:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 30 states have (on average 1.0) internal successors, (30), 30 states have internal predecessors, (30), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-25 17:44:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-11-25 17:44:44,573 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 48 [2021-11-25 17:44:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:44,574 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-11-25 17:44:44,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-25 17:44:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-11-25 17:44:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 17:44:44,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:44,587 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:44:44,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:44:44,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:44:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1842871254, now seen corresponding path program 1 times [2021-11-25 17:44:44,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:44,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478691000] [2021-11-25 17:44:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:44,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 17:44:45,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:45,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478691000] [2021-11-25 17:44:45,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478691000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:45,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:45,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:44:45,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810042782] [2021-11-25 17:44:45,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:45,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:44:45,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:44:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:44:45,024 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-25 17:44:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:45,206 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-11-25 17:44:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:44:45,206 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) Word has length 54 [2021-11-25 17:44:45,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:45,207 INFO L225 Difference]: With dead ends: 53 [2021-11-25 17:44:45,207 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 17:44:45,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:44:45,208 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:45,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 115 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:44:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 17:44:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 17:44:45,209 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) [2021-11-25 17:44:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 17:44:45,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2021-11-25 17:44:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:45,210 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 17:44:45,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-25 17:44:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 17:44:45,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 17:44:45,212 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 17:44:45,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:44:45,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 17:44:46,059 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validEXIT(lines 4717 4721) no Hoare annotation was computed. [2021-11-25 17:44:46,060 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_node_next_is_validENTRY(lines 4717 4721) the Hoare annotation is: true [2021-11-25 17:44:46,060 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validEXIT(lines 4728 4732) no Hoare annotation was computed. [2021-11-25 17:44:46,060 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_node_prev_is_validENTRY(lines 4728 4732) the Hoare annotation is: true [2021-11-25 17:44:46,060 INFO L854 garLoopResultBuilder]: At program point L7391-1(line 7391) the Hoare annotation is: (let ((.cse1 (+ 8 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|))) (.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|))) (and (= |ULTIMATE.start_aws_linked_list_next_~node#1.offset| (select (select |#memory_$Pointer$.offset| .cse0) .cse1)) (not (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| (select (select |#memory_$Pointer$.base| .cse0) .cse1)) (not (= .cse0 0)))) [2021-11-25 17:44:46,060 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 17:44:46,061 INFO L854 garLoopResultBuilder]: At program point L7391(line 7391) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset| (select (select |#memory_$Pointer$.offset| .cse1) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| .cse1))) [2021-11-25 17:44:46,061 INFO L858 garLoopResultBuilder]: For program point L7389-2(line 7389) no Hoare annotation was computed. [2021-11-25 17:44:46,061 INFO L854 garLoopResultBuilder]: At program point L7389-1(line 7389) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (<= |ULTIMATE.start_aws_linked_list_next_harness_#t~ret675#1| 1) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset|) (<= 1 |ULTIMATE.start_aws_linked_list_next_harness_#t~ret675#1|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset| (select (select |#memory_$Pointer$.offset| .cse1) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| .cse1))) [2021-11-25 17:44:46,061 INFO L854 garLoopResultBuilder]: At program point L7389(line 7389) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset| (select (select |#memory_$Pointer$.offset| .cse1) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| .cse1))) [2021-11-25 17:44:46,062 INFO L854 garLoopResultBuilder]: At program point L4840-1(line 4840) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (<= |ULTIMATE.start_aws_linked_list_next_#t~ret332#1| 1) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= .cse1 |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (<= 1 |ULTIMATE.start_aws_linked_list_next_#t~ret332#1|))) [2021-11-25 17:44:46,062 INFO L858 garLoopResultBuilder]: For program point L4840-2(line 4840) no Hoare annotation was computed. [2021-11-25 17:44:46,062 INFO L854 garLoopResultBuilder]: At program point L4840(line 4840) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (exists ((|ULTIMATE.start_aws_linked_list_next_~node#1.base| Int)) (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0)) (.cse1 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0))) (and (< 1 .cse0) (= (select (select |#memory_$Pointer$.base| .cse0) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= (select (select |#memory_$Pointer$.offset| .cse0) 8) 0) (< 1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= .cse1 0) (not (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| .cse0)) (= .cse1 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|)))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse2 |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (= .cse2 |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) [2021-11-25 17:44:46,062 INFO L854 garLoopResultBuilder]: At program point L7390(line 7390) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset| (select (select |#memory_$Pointer$.offset| .cse1) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| .cse1))) [2021-11-25 17:44:46,062 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 17:44:46,063 INFO L858 garLoopResultBuilder]: For program point L7390-2(line 7390) no Hoare annotation was computed. [2021-11-25 17:44:46,063 INFO L854 garLoopResultBuilder]: At program point L7390-1(line 7390) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (and (<= |ULTIMATE.start_aws_linked_list_next_harness_#t~ret676#1| 1) (<= 1 |ULTIMATE.start_aws_linked_list_next_harness_#t~ret676#1|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.offset| (select (select |#memory_$Pointer$.offset| .cse1) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_harness_~rval~10#1.base|) 8))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| .cse1))) [2021-11-25 17:44:46,063 INFO L854 garLoopResultBuilder]: At program point L4839(line 4839) the Hoare annotation is: (let ((.cse3 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) (let ((.cse1 (select .cse3 |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse0 (select .cse3 0)) (.cse2 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (< 1 .cse0) (= |ULTIMATE.start_aws_linked_list_next_~node#1.offset| 0) (= .cse1 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (< 1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse2 |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0) 0) (not (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| .cse0)) (= .cse2 |ULTIMATE.start_aws_linked_list_next_~node#1.base|)))) [2021-11-25 17:44:46,063 INFO L854 garLoopResultBuilder]: At program point L4839-1(line 4839) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (exists ((|ULTIMATE.start_aws_linked_list_next_~node#1.base| Int)) (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0)) (.cse1 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0))) (and (< 1 .cse0) (= |ULTIMATE.start_aws_linked_list_next_#t~ret331#1| 1) (= (select (select |#memory_$Pointer$.base| .cse0) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= (select (select |#memory_$Pointer$.offset| .cse0) 8) 0) (< 1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= .cse1 0) (not (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| .cse0)) (= .cse1 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|)))) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= .cse2 |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (= .cse2 |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) [2021-11-25 17:44:46,064 INFO L854 garLoopResultBuilder]: At program point L4841(line 4841) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset| |ULTIMATE.start_aws_linked_list_next_#t~mem333#1.offset|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_#t~mem333#1.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) [2021-11-25 17:44:46,064 INFO L854 garLoopResultBuilder]: At program point L4841-1(line 4841) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (= .cse0 |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (not (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base| 0)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset|) (= .cse0 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|)) (= |ULTIMATE.start_aws_linked_list_next_~rval~4#1.offset| |ULTIMATE.start_aws_linked_list_next_#t~mem333#1.offset|) (not (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base| 0)) (= |ULTIMATE.start_aws_linked_list_next_#t~mem333#1.base| |ULTIMATE.start_aws_linked_list_next_~rval~4#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) [2021-11-25 17:44:46,064 INFO L858 garLoopResultBuilder]: For program point L4837-2(line 4837) no Hoare annotation was computed. [2021-11-25 17:44:46,064 INFO L854 garLoopResultBuilder]: At program point L4837(line 4837) the Hoare annotation is: (let ((.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) (let ((.cse1 (select .cse2 |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse0 (select .cse2 0))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (< 1 .cse0) (= |ULTIMATE.start_aws_linked_list_next_~node#1.offset| 0) (= (select (select |#memory_$Pointer$.base| .cse0) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= (select (select |#memory_$Pointer$.offset| .cse0) 8) 0) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| .cse1) 8) |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (< 1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0) 0) (not (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| .cse0))))) [2021-11-25 17:44:46,064 INFO L858 garLoopResultBuilder]: For program point L4839-2(line 4839) no Hoare annotation was computed. [2021-11-25 17:44:46,065 INFO L854 garLoopResultBuilder]: At program point L4837-1(line 4837) the Hoare annotation is: (let ((.cse2 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_next_~node#1.base|))) (let ((.cse1 (select .cse2 |ULTIMATE.start_aws_linked_list_next_~node#1.offset|)) (.cse0 (select .cse2 0))) (and (= |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.offset|) (< 1 .cse0) (= |ULTIMATE.start_aws_linked_list_next_~node#1.offset| 0) (= (select (select |#memory_$Pointer$.base| .cse0) 8) |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= (select (select |#memory_$Pointer$.offset| .cse0) 8) 0) (= |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| .cse1) 8) |ULTIMATE.start_aws_linked_list_next_harness_~#node~1#1.base|) (< 1 |ULTIMATE.start_aws_linked_list_next_~node#1.base|) (= .cse1 |ULTIMATE.start_aws_linked_list_next_harness_~#after~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_next_~node#1.base|) 0) 0) (not (= |ULTIMATE.start_aws_linked_list_next_~node#1.base| .cse0))))) [2021-11-25 17:44:46,065 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-25 17:44:46,065 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-25 17:44:46,065 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-25 17:44:46,065 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-25 17:44:46,065 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-25 17:44:46,066 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-25 17:44:46,066 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-25 17:44:46,066 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-25 17:44:46,069 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-25 17:44:46,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:44:46,080 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,081 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,081 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,081 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,081 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,082 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,082 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,086 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,087 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,087 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,087 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,087 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,087 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,088 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,091 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,091 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,092 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,093 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,094 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:44:46 BoogieIcfgContainer [2021-11-25 17:44:46,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:44:46,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:44:46,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:44:46,096 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:44:46,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:27" (3/4) ... [2021-11-25 17:44:46,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 17:44:46,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2021-11-25 17:44:46,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2021-11-25 17:44:46,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 17:44:46,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 17:44:46,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2021-11-25 17:44:46,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-25 17:44:46,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 17:44:46,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 17:44:46,154 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:44:46,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:44:46,155 INFO L158 Benchmark]: Toolchain (without parser) took 22790.25ms. Allocated memory was 109.1MB in the beginning and 285.2MB in the end (delta: 176.2MB). Free memory was 68.1MB in the beginning and 76.2MB in the end (delta: -8.1MB). Peak memory consumption was 166.2MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,155 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:44:46,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2753.97ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 67.9MB in the beginning and 87.1MB in the end (delta: -19.3MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 186.74ms. Allocated memory is still 132.1MB. Free memory was 87.1MB in the beginning and 81.6MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,156 INFO L158 Benchmark]: Boogie Preprocessor took 40.42ms. Allocated memory is still 132.1MB. Free memory was 81.6MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,157 INFO L158 Benchmark]: RCFGBuilder took 745.42ms. Allocated memory is still 132.1MB. Free memory was 79.5MB in the beginning and 58.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,157 INFO L158 Benchmark]: TraceAbstraction took 18989.30ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 57.8MB in the beginning and 81.4MB in the end (delta: -23.6MB). Peak memory consumption was 129.8MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,158 INFO L158 Benchmark]: Witness Printer took 58.54ms. Allocated memory is still 285.2MB. Free memory was 81.4MB in the beginning and 76.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 17:44:46,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2753.97ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 67.9MB in the beginning and 87.1MB in the end (delta: -19.3MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 186.74ms. Allocated memory is still 132.1MB. Free memory was 87.1MB in the beginning and 81.6MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.42ms. Allocated memory is still 132.1MB. Free memory was 81.6MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 745.42ms. Allocated memory is still 132.1MB. Free memory was 79.5MB in the beginning and 58.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18989.30ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 57.8MB in the beginning and 81.4MB in the end (delta: -23.6MB). Peak memory consumption was 129.8MB. Max. memory is 16.1GB. * Witness Printer took 58.54ms. Allocated memory is still 285.2MB. Free memory was 81.4MB in the beginning and 76.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * 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 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.9s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 877 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 98 IncrementalHoareTripleChecker+Unchecked, 809 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 759 IncrementalHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 164 mSDtfsCounter, 759 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=5, InterpolantAutomatonStates: 57, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 34 PreInvPairs, 44 NumberOfFragments, 1085 HoareAnnotationTreeSize, 34 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 2237 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 250 ConstructedInterpolants, 15 QuantifiedInterpolants, 4579 SizeOfPredicates, 34 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 142/146 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: 7391]: Loop Invariant [2021-11-25 17:44:46,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,175 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,175 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,176 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,179 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,179 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,179 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,180 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,180 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,180 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,186 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: ((node == #memory_$Pointer$[#memory_$Pointer$[node][node]][8 + #memory_$Pointer$[node][node]] && !(node == 0)) && node == #memory_$Pointer$[#memory_$Pointer$[node][node]][8 + #memory_$Pointer$[node][node]]) && !(#memory_$Pointer$[node][node] == 0) - InvariantResult [Line: 4841]: Loop Invariant [2021-11-25 17:44:46,194 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,194 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,194 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,195 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,195 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,195 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,196 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,196 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,196 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 17:44:46,196 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,197 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 17:44:46,197 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: ((((((((((((node == node && rval == #memory_$Pointer$[node][node]) && #memory_$Pointer$[node][node] == rval) && after == 0) && !(rval == 0)) && #memory_$Pointer$[rval][8] == node) && after == rval) && #memory_$Pointer$[node][node] == after) && !(node == after)) && rval == node->next) && !(node == 0)) && node->next == rval) && #memory_$Pointer$[rval][8] == node) && #memory_$Pointer$[rval][8] == node RESULT: Ultimate proved your program to be correct! [2021-11-25 17:44:46,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6879a87-8781-4180-9cff-3586511a8273/bin/utaipan-eEHZpOm5b7/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