./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91 --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 489929a5e16ca7b6c37431f1402d7909a8c53c05fad96c5d5ea6a1c3ea89ee37 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:15:29,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:15:29,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:15:30,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:15:30,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:15:30,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:15:30,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:15:30,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:15:30,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:15:30,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:15:30,032 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:15:30,032 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:15:30,033 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:15:30,033 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:15:30,034 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:15:30,035 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:15:30,035 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:15:30,036 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:15:30,036 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:15:30,037 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:15:30,037 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:15:30,038 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:15:30,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:15:30,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:15:30,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:15:30,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:15:30,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:15:30,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:15:30,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:15:30,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:15:30,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:15:30,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:15:30,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:15:30,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:15:30,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:30,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:15:30,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:15:30,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:15:30,045 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:15:30,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:15:30,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:15:30,046 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:15:30,046 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:15:30,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:15:30,046 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_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 489929a5e16ca7b6c37431f1402d7909a8c53c05fad96c5d5ea6a1c3ea89ee37 [2023-11-24 23:15:30,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:15:30,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:15:30,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:15:30,341 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:15:30,341 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:15:30,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i [2023-11-24 23:15:33,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:15:34,371 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:15:34,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i [2023-11-24 23:15:34,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/data/fd894f45c/253d70b723af47eb9ed62cf4bfd2b3f0/FLAGaf0269959 [2023-11-24 23:15:34,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/data/fd894f45c/253d70b723af47eb9ed62cf4bfd2b3f0 [2023-11-24 23:15:34,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:15:34,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:15:34,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:34,450 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:15:34,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:15:34,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:34" (1/1) ... [2023-11-24 23:15:34,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc2fb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:34, skipping insertion in model container [2023-11-24 23:15:34,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:34" (1/1) ... [2023-11-24 23:15:34,656 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:15:35,013 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_f131bc14-089a-4517-ba6c-90e797bfadff/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i[4492,4505] [2023-11-24 23:15:35,024 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_f131bc14-089a-4517-ba6c-90e797bfadff/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i[4552,4565] [2023-11-24 23:15:36,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,525 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,526 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,529 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,573 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,576 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:36,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:37,458 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:15:37,460 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:15:37,462 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:15:37,464 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:15:37,466 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:15:37,467 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:15:37,468 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:15:37,469 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:15:37,470 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:15:37,472 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:15:38,345 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:38,473 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:15:38,488 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_f131bc14-089a-4517-ba6c-90e797bfadff/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i[4492,4505] [2023-11-24 23:15:38,489 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_f131bc14-089a-4517-ba6c-90e797bfadff/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness_negated.i[4552,4565] [2023-11-24 23:15:38,531 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,533 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,533 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,547 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,548 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,590 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:15:38,591 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:15:38,592 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:15:38,593 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:15:38,595 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:15:38,596 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:15:38,597 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:15:38,597 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:15:38,598 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:15:38,599 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:15:38,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-24 23:15:38,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:15:38,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:39,283 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,284 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,284 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,284 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,284 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,284 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,285 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,285 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,285 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,285 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,285 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,285 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,286 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,286 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,286 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,286 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,287 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,287 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:15:39,295 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:15:39,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39 WrapperNode [2023-11-24 23:15:39,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:39,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:39,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:15:39,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:15:39,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,617 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 70, calls inlined = 25, statements flattened = 1457 [2023-11-24 23:15:39,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:39,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:15:39,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:15:39,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:15:39,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:15:39,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:15:39,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:15:39,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:15:39,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (1/1) ... [2023-11-24 23:15:39,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:39,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:15:39,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:15:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:15:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:15:39,912 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:15:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:15:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:15:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:15:39,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:15:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:15:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:15:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-24 23:15:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-24 23:15:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:15:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:15:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:15:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-24 23:15:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-24 23:15:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:15:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:15:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:15:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:15:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:15:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:15:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:15:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-24 23:15:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-24 23:15:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:15:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-24 23:15:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-24 23:15:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:15:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:15:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:15:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:15:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-24 23:15:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-24 23:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-24 23:15:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-24 23:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-24 23:15:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-24 23:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-24 23:15:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-24 23:15:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-24 23:15:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-24 23:15:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:15:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-24 23:15:39,921 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-24 23:15:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:15:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-24 23:15:39,921 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-24 23:15:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-24 23:15:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-24 23:15:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-24 23:15:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:15:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:15:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-24 23:15:39,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-24 23:15:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-24 23:15:39,928 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-24 23:15:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-24 23:15:39,928 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-24 23:15:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:15:39,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:15:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-24 23:15:39,930 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-24 23:15:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:15:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:15:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:15:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:15:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:15:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-24 23:15:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-24 23:15:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-24 23:15:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-24 23:15:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:15:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:15:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:15:40,380 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:15:40,383 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:15:40,898 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-24 23:15:40,956 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-24 23:15:41,660 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-24 23:15:41,661 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-24 23:15:43,206 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:15:43,866 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:15:43,867 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-24 23:15:43,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:43 BoogieIcfgContainer [2023-11-24 23:15:43,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:15:43,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:15:43,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:15:43,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:15:43,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:15:34" (1/3) ... [2023-11-24 23:15:43,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a8e55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:43, skipping insertion in model container [2023-11-24 23:15:43,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:39" (2/3) ... [2023-11-24 23:15:43,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a8e55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:43, skipping insertion in model container [2023-11-24 23:15:43,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:43" (3/3) ... [2023-11-24 23:15:43,882 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_put_harness_negated.i [2023-11-24 23:15:43,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:15:43,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:15:43,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:15:44,004 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;@21621950, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:15:44,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:15:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 173 states have (on average 1.260115606936416) internal successors, (218), 170 states have internal predecessors, (218), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-24 23:15:44,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-24 23:15:44,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:44,034 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 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, 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] [2023-11-24 23:15:44,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:15:44,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash 74335190, now seen corresponding path program 1 times [2023-11-24 23:15:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83169236] [2023-11-24 23:15:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:44,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:44,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420174818] [2023-11-24 23:15:44,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:44,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:44,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:44,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:44,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:15:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:45,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:15:45,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-24 23:15:45,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:45,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83169236] [2023-11-24 23:15:45,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420174818] [2023-11-24 23:15:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420174818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:45,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:45,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:15:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834597995] [2023-11-24 23:15:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:45,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:15:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:45,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:15:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:15:45,857 INFO L87 Difference]: Start difference. First operand has 286 states, 173 states have (on average 1.260115606936416) internal successors, (218), 170 states have internal predecessors, (218), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-24 23:15:49,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:15:50,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:15:53,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:15:54,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:54,885 INFO L93 Difference]: Finished difference Result 568 states and 799 transitions. [2023-11-24 23:15:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:15:54,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 95 [2023-11-24 23:15:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:54,903 INFO L225 Difference]: With dead ends: 568 [2023-11-24 23:15:54,903 INFO L226 Difference]: Without dead ends: 288 [2023-11-24 23:15:54,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:15:54,913 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:54,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1324 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-11-24 23:15:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-24 23:15:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-24 23:15:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 171 states have (on average 1.239766081871345) internal successors, (212), 172 states have internal predecessors, (212), 86 states have call successors, (86), 29 states have call predecessors, (86), 30 states have return successors, (89), 86 states have call predecessors, (89), 85 states have call successors, (89) [2023-11-24 23:15:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 387 transitions. [2023-11-24 23:15:55,000 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 387 transitions. Word has length 95 [2023-11-24 23:15:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:55,001 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 387 transitions. [2023-11-24 23:15:55,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-24 23:15:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 387 transitions. [2023-11-24 23:15:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-24 23:15:55,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:55,008 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 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, 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] [2023-11-24 23:15:55,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:15:55,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:15:55,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1139298689, now seen corresponding path program 1 times [2023-11-24 23:15:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:55,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472013887] [2023-11-24 23:15:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:55,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-24 23:15:56,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472013887] [2023-11-24 23:15:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472013887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:15:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594292171] [2023-11-24 23:15:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:15:56,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:15:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:15:56,735 INFO L87 Difference]: Start difference. First operand 288 states and 387 transitions. Second operand has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-24 23:16:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:00,179 INFO L93 Difference]: Finished difference Result 539 states and 727 transitions. [2023-11-24 23:16:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:16:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 99 [2023-11-24 23:16:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:00,187 INFO L225 Difference]: With dead ends: 539 [2023-11-24 23:16:00,188 INFO L226 Difference]: Without dead ends: 290 [2023-11-24 23:16:00,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:00,192 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 0 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:00,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1230 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-24 23:16:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-24 23:16:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-11-24 23:16:00,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 172 states have (on average 1.2383720930232558) internal successors, (213), 174 states have internal predecessors, (213), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-24 23:16:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 394 transitions. [2023-11-24 23:16:00,238 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 394 transitions. Word has length 99 [2023-11-24 23:16:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:00,239 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 394 transitions. [2023-11-24 23:16:00,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-24 23:16:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 394 transitions. [2023-11-24 23:16:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-24 23:16:00,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:00,247 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:00,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:16:00,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:00,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1779878538, now seen corresponding path program 1 times [2023-11-24 23:16:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012614930] [2023-11-24 23:16:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:16:03,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:03,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012614930] [2023-11-24 23:16:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012614930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:03,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:03,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 23:16:03,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772475417] [2023-11-24 23:16:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:03,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:16:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:16:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:16:03,099 INFO L87 Difference]: Start difference. First operand 290 states and 394 transitions. Second operand has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-24 23:16:07,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:09,289 INFO L93 Difference]: Finished difference Result 564 states and 765 transitions. [2023-11-24 23:16:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:16:09,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 103 [2023-11-24 23:16:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:09,294 INFO L225 Difference]: With dead ends: 564 [2023-11-24 23:16:09,294 INFO L226 Difference]: Without dead ends: 292 [2023-11-24 23:16:09,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:16:09,296 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 2 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:09,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1549 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-24 23:16:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-24 23:16:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2023-11-24 23:16:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 173 states have (on average 1.2369942196531791) internal successors, (214), 176 states have internal predecessors, (214), 86 states have call successors, (86), 29 states have call predecessors, (86), 32 states have return successors, (96), 86 states have call predecessors, (96), 85 states have call successors, (96) [2023-11-24 23:16:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 396 transitions. [2023-11-24 23:16:09,328 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 396 transitions. Word has length 103 [2023-11-24 23:16:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:09,329 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 396 transitions. [2023-11-24 23:16:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-24 23:16:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 396 transitions. [2023-11-24 23:16:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-24 23:16:09,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:09,332 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:09,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:16:09,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:09,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1641807014, now seen corresponding path program 1 times [2023-11-24 23:16:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:09,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160662905] [2023-11-24 23:16:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-24 23:16:10,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160662905] [2023-11-24 23:16:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160662905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806948543] [2023-11-24 23:16:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:10,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:10,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:10,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:11,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f131bc14-089a-4517-ba6c-90e797bfadff/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:11,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-24 23:16:11,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:12,125 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 1 [2023-11-24 23:16:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-24 23:16:12,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806948543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:12,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:12,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2023-11-24 23:16:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758501689] [2023-11-24 23:16:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:12,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:16:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:16:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:16:12,540 INFO L87 Difference]: Start difference. First operand 292 states and 396 transitions. Second operand has 12 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-24 23:16:16,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:18,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:16:21,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:16:23,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:16:25,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]