./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:30,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:30,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:22:30,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:30,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:30,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:30,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:30,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:30,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:30,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:30,394 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:30,395 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:30,396 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:30,398 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:30,398 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:30,399 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:30,399 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:30,399 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:30,400 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:30,400 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:30,401 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:30,401 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:30,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:30,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:30,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:30,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:30,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:30,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:30,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:30,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:30,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:30,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:30,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:30,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:30,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:30,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:30,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:30,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:30,408 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:30,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:30,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:30,409 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:30,409 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:30,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:30,410 INFO L153 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_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2023-11-23 21:22:30,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:30,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:30,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:30,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:30,799 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:30,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2023-11-23 21:22:34,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:34,841 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:34,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2023-11-23 21:22:34,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/data/b686a6c55/c2609e2f043240cc80b0c48dc53057f3/FLAGc6b12e313 [2023-11-23 21:22:34,907 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/data/b686a6c55/c2609e2f043240cc80b0c48dc53057f3 [2023-11-23 21:22:34,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:34,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:34,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:34,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:34,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:34,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:34" (1/1) ... [2023-11-23 21:22:34,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f603bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:34, skipping insertion in model container [2023-11-23 21:22:34,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:34" (1/1) ... [2023-11-23 21:22:35,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:35,419 WARN L240 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_55735fd3-6037-451d-86fd-2719050635e8/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2023-11-23 21:22:35,428 WARN L240 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_55735fd3-6037-451d-86fd-2719050635e8/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2023-11-23 21:22:36,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,674 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,675 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:36,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,119 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:22:37,120 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:22:37,122 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:22:37,123 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:22:37,125 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:22:37,126 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:22:37,127 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:22:37,127 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:22:37,128 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:22:37,129 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:22:37,314 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:37,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:37,513 WARN L240 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_55735fd3-6037-451d-86fd-2719050635e8/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2023-11-23 21:22:37,515 WARN L240 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_55735fd3-6037-451d-86fd-2719050635e8/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2023-11-23 21:22:37,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,607 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,623 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,623 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:22:37,657 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:22:37,658 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:22:37,659 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:22:37,660 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:22:37,660 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:22:37,661 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:22:37,661 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:22:37,662 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:22:37,662 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:22:37,687 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,693 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:22:37,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7747-7758] [2023-11-23 21:22:37,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:37,938 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,938 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,938 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,938 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,939 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,939 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,939 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,939 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,940 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,940 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,940 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,940 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,940 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,941 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,941 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:37,949 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:37,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37 WrapperNode [2023-11-23 21:22:37,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:37,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:37,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:37,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:37,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,170 INFO L138 Inliner]: procedures = 689, calls = 1683, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 593 [2023-11-23 21:22:38,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:38,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:38,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:38,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:38,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:38,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:38,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:38,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:38,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (1/1) ... [2023-11-23 21:22:38,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:38,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:38,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:38,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 21:22:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 21:22:38,376 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 21:22:38,376 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 21:22:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:22:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:22:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:22:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:22:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:22:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:22:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:22:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:22:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:22:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:22:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:22:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 21:22:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 21:22:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:22:38,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:22:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 21:22:38,384 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 21:22:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:22:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:22:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:22:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:22:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:22:38,386 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:22:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:22:38,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:22:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:22:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 21:22:38,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 21:22:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:38,677 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:38,680 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:39,736 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:39,965 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:39,965 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:22:39,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:39 BoogieIcfgContainer [2023-11-23 21:22:39,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:39,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:39,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:39,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:39,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:34" (1/3) ... [2023-11-23 21:22:39,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d3069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:39, skipping insertion in model container [2023-11-23 21:22:39,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:37" (2/3) ... [2023-11-23 21:22:39,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d3069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:39, skipping insertion in model container [2023-11-23 21:22:39,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:39" (3/3) ... [2023-11-23 21:22:39,980 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2023-11-23 21:22:40,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:40,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:40,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:40,097 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d896f93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:40,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:22:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:22:40,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:40,116 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:40,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:40,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1482441866, now seen corresponding path program 1 times [2023-11-23 21:22:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425995947] [2023-11-23 21:22:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:22:41,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425995947] [2023-11-23 21:22:41,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425995947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336902573] [2023-11-23 21:22:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:41,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:41,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:41,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:41,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:41,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:41,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:22:42,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336902573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:42,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:42,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 21:22:42,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370556395] [2023-11-23 21:22:42,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:42,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:22:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:22:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:22:42,097 INFO L87 Difference]: Start difference. First operand has 99 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:22:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:42,526 INFO L93 Difference]: Finished difference Result 169 states and 225 transitions. [2023-11-23 21:22:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 56 [2023-11-23 21:22:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:42,539 INFO L225 Difference]: With dead ends: 169 [2023-11-23 21:22:42,539 INFO L226 Difference]: Without dead ends: 95 [2023-11-23 21:22:42,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:22:42,546 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 22 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:42,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 359 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:22:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-23 21:22:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-23 21:22:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2023-11-23 21:22:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2023-11-23 21:22:42,609 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 56 [2023-11-23 21:22:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:42,610 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2023-11-23 21:22:42,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:22:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2023-11-23 21:22:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:22:42,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:42,615 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:42,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:42,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:22:42,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:42,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1856319377, now seen corresponding path program 1 times [2023-11-23 21:22:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:42,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725701672] [2023-11-23 21:22:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:42,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:42,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:42,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046634551] [2023-11-23 21:22:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:42,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:42,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:42,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:42,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:43,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:22:43,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:22:43,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:43,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725701672] [2023-11-23 21:22:43,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046634551] [2023-11-23 21:22:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046634551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:43,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:43,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:22:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683917684] [2023-11-23 21:22:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:43,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:22:43,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:22:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:43,622 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 21:22:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:44,090 INFO L93 Difference]: Finished difference Result 148 states and 179 transitions. [2023-11-23 21:22:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:22:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 65 [2023-11-23 21:22:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:44,093 INFO L225 Difference]: With dead ends: 148 [2023-11-23 21:22:44,093 INFO L226 Difference]: Without dead ends: 93 [2023-11-23 21:22:44,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:22:44,096 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 22 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:44,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 495 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:22:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-23 21:22:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-23 21:22:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 21:22:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2023-11-23 21:22:44,110 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 65 [2023-11-23 21:22:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:44,111 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2023-11-23 21:22:44,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 21:22:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2023-11-23 21:22:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 21:22:44,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:44,115 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:44,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:22:44,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:44,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 441700637, now seen corresponding path program 1 times [2023-11-23 21:22:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359121451] [2023-11-23 21:22:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:44,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16958673] [2023-11-23 21:22:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:44,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:44,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:44,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:44,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55735fd3-6037-451d-86fd-2719050635e8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:22:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:47,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 317 conjunts are in the unsatisfiable core [2023-11-23 21:22:47,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:47,152 INFO L349 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2023-11-23 21:22:47,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2023-11-23 21:22:47,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 21:22:47,190 INFO L378 Elim1Store]: Elim1 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 6 treesize of output 5 [2023-11-23 21:22:48,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:22:48,577 INFO L349 Elim1Store]: treesize reduction 156, result has 33.9 percent of original size [2023-11-23 21:22:48,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 65 treesize of output 117