./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/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_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/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_5d93968d-2d7b-49e5-887c-06804c711c64/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 6be9b66ca328a7a6212dacb956e89cedd13b1d7b23d6b6080c393a898cf27e7a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:53:27,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:53:27,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:53:27,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:53:27,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:53:27,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:53:27,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:53:27,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:53:27,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:53:27,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:53:27,549 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:53:27,549 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:53:27,550 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:53:27,552 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:53:27,552 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:53:27,553 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:53:27,553 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:53:27,554 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:53:27,554 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:53:27,555 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:53:27,555 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:53:27,556 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:53:27,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:53:27,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:53:27,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:53:27,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:53:27,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:53:27,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:53:27,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:53:27,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:53:27,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:53:27,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:53:27,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:53:27,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:53:27,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:53:27,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:53:27,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:53:27,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:53:27,565 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:53:27,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:53:27,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:53:27,566 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:53:27,566 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:53:27,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:53:27,567 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_5d93968d-2d7b-49e5-887c-06804c711c64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be9b66ca328a7a6212dacb956e89cedd13b1d7b23d6b6080c393a898cf27e7a [2023-11-24 23:53:27,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:53:27,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:53:27,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:53:27,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:53:27,873 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:53:27,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i [2023-11-24 23:53:31,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:53:31,720 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:53:31,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i [2023-11-24 23:53:31,765 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/data/a0c5b0bfe/87607fbd83ec47daa4bd72aa1303d684/FLAGc811dd797 [2023-11-24 23:53:31,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/data/a0c5b0bfe/87607fbd83ec47daa4bd72aa1303d684 [2023-11-24 23:53:31,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:53:31,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:53:31,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:53:31,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:53:31,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:53:31,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:53:31" (1/1) ... [2023-11-24 23:53:31,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182f4654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:31, skipping insertion in model container [2023-11-24 23:53:31,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:53:31" (1/1) ... [2023-11-24 23:53:31,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:53:32,346 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_5d93968d-2d7b-49e5-887c-06804c711c64/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4493,4506] [2023-11-24 23:53:32,357 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_5d93968d-2d7b-49e5-887c-06804c711c64/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4553,4566] [2023-11-24 23:53:33,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,807 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,813 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,815 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,818 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:33,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:34,360 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:53:34,362 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:53:34,363 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:53:34,366 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:53:34,368 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:53:34,369 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:53:34,370 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:53:34,370 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:53:34,371 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:53:34,372 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:53:35,007 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,008 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,046 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,047 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,054 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:53:35,247 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:53:35,285 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_5d93968d-2d7b-49e5-887c-06804c711c64/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4493,4506] [2023-11-24 23:53:35,285 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_5d93968d-2d7b-49e5-887c-06804c711c64/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4553,4566] [2023-11-24 23:53:35,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,355 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,359 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,360 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,401 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:53:35,408 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:53:35,409 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:53:35,411 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:53:35,412 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:53:35,414 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:53:35,415 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:53:35,416 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:53:35,417 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:53:35,418 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:53:35,467 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-24 23:53:35,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,575 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:53:35,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:53:35,913 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,914 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,914 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,914 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,914 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,914 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,914 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,915 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,915 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,915 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,915 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,915 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,915 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,916 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,916 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,916 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,916 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,916 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:35,924 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:53:35,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35 WrapperNode [2023-11-24 23:53:35,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:53:35,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:53:35,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:53:35,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:53:35,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,194 INFO L138 Inliner]: procedures = 772, calls = 2447, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 623 [2023-11-24 23:53:36,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:53:36,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:53:36,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:53:36,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:53:36,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:53:36,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:53:36,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:53:36,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:53:36,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (1/1) ... [2023-11-24 23:53:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:53:36,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:36,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:53:36,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:53:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:53:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:53:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:53:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:53:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:53:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:53:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-24 23:53:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-24 23:53:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:53:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:53:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:53:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:53:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:53:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:53:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:53:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:53:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:53:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:53:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:53:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:53:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-24 23:53:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-24 23:53:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:53:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:53:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:53:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:53:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-24 23:53:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-24 23:53:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:53:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2023-11-24 23:53:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2023-11-24 23:53:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-24 23:53:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-24 23:53:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2023-11-24 23:53:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2023-11-24 23:53:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:53:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:53:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2023-11-24 23:53:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2023-11-24 23:53:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-24 23:53:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-24 23:53:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:53:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:53:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:53:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-24 23:53:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-24 23:53:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:53:36,781 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:53:36,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:53:36,892 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2023-11-24 23:53:37,800 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:53:38,103 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:53:38,104 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 23:53:38,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:38 BoogieIcfgContainer [2023-11-24 23:53:38,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:53:38,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:53:38,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:53:38,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:53:38,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:53:31" (1/3) ... [2023-11-24 23:53:38,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576a71d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:53:38, skipping insertion in model container [2023-11-24 23:53:38,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:35" (2/3) ... [2023-11-24 23:53:38,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576a71d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:53:38, skipping insertion in model container [2023-11-24 23:53:38,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:38" (3/3) ... [2023-11-24 23:53:38,122 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness_negated.i [2023-11-24 23:53:38,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:53:38,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:53:38,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:53:38,225 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;@600a6340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:53:38,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:53:38,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-24 23:53:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-24 23:53:38,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:38,248 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:38,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:53:38,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1167163344, now seen corresponding path program 1 times [2023-11-24 23:53:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:38,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137751514] [2023-11-24 23:53:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:38,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:53:38,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716875666] [2023-11-24 23:53:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:38,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:38,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:38,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:53:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:39,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:53:39,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-24 23:53:39,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:39,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:39,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137751514] [2023-11-24 23:53:39,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:53:39,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716875666] [2023-11-24 23:53:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716875666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:39,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:39,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269545207] [2023-11-24 23:53:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:39,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:53:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:53:39,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:53:39,878 INFO L87 Difference]: Start difference. First operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-24 23:53:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:40,146 INFO L93 Difference]: Finished difference Result 199 states and 263 transitions. [2023-11-24 23:53:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:53:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2023-11-24 23:53:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:40,164 INFO L225 Difference]: With dead ends: 199 [2023-11-24 23:53:40,164 INFO L226 Difference]: Without dead ends: 129 [2023-11-24 23:53:40,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:53:40,177 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:40,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:53:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-24 23:53:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-24 23:53:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-24 23:53:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2023-11-24 23:53:40,238 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 110 [2023-11-24 23:53:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:40,240 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2023-11-24 23:53:40,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-24 23:53:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2023-11-24 23:53:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 23:53:40,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:40,247 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:40,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:40,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:53:40,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:53:40,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash -982675586, now seen corresponding path program 1 times [2023-11-24 23:53:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750000886] [2023-11-24 23:53:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:40,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:40,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:53:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642955930] [2023-11-24 23:53:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:40,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:40,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:40,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:40,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:53:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:41,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:53:41,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-24 23:53:41,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-24 23:53:42,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750000886] [2023-11-24 23:53:42,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:53:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642955930] [2023-11-24 23:53:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642955930] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:42,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:53:42,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-24 23:53:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380685726] [2023-11-24 23:53:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:42,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:53:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:42,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:53:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:53:42,071 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-24 23:53:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:43,045 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2023-11-24 23:53:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:53:43,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 115 [2023-11-24 23:53:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:43,050 INFO L225 Difference]: With dead ends: 178 [2023-11-24 23:53:43,050 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:53:43,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:53:43,053 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:43,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 677 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:53:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:53:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-24 23:53:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-24 23:53:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2023-11-24 23:53:43,076 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 115 [2023-11-24 23:53:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:43,077 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2023-11-24 23:53:43,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-24 23:53:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2023-11-24 23:53:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-24 23:53:43,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:43,083 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:43,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:43,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:53:43,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:53:43,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash -768122866, now seen corresponding path program 1 times [2023-11-24 23:53:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:43,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439386668] [2023-11-24 23:53:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:43,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:53:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436521733] [2023-11-24 23:53:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:43,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:43,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:43,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:53:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:44,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:53:44,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-24 23:53:44,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:44,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:44,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439386668] [2023-11-24 23:53:44,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:53:44,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436521733] [2023-11-24 23:53:44,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436521733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:44,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:44,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:53:44,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703481559] [2023-11-24 23:53:44,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:44,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:53:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:53:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:53:44,169 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-24 23:53:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:44,534 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2023-11-24 23:53:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:53:44,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2023-11-24 23:53:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:44,537 INFO L225 Difference]: With dead ends: 256 [2023-11-24 23:53:44,537 INFO L226 Difference]: Without dead ends: 135 [2023-11-24 23:53:44,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 23:53:44,540 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:44,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 548 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:53:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-24 23:53:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-24 23:53:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.16) internal successors, (87), 77 states have internal predecessors, (87), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-24 23:53:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2023-11-24 23:53:44,559 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 116 [2023-11-24 23:53:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:44,560 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2023-11-24 23:53:44,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-24 23:53:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2023-11-24 23:53:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-24 23:53:44,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:44,563 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:44,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:44,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:44,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:53:44,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash -986726306, now seen corresponding path program 1 times [2023-11-24 23:53:44,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:44,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561685920] [2023-11-24 23:53:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:44,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-24 23:53:47,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561685920] [2023-11-24 23:53:47,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561685920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721235238] [2023-11-24 23:53:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:47,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:47,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:47,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:53:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:48,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-24 23:53:48,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:53:48,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:48,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721235238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:48,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:53:48,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-24 23:53:48,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4174904] [2023-11-24 23:53:48,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:48,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:53:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:53:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:53:48,238 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 6 states, 3 states have (on average 20.666666666666668) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-24 23:53:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:48,806 INFO L93 Difference]: Finished difference Result 252 states and 315 transitions. [2023-11-24 23:53:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:53:48,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 20.666666666666668) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 124 [2023-11-24 23:53:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:48,811 INFO L225 Difference]: With dead ends: 252 [2023-11-24 23:53:48,811 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:53:48,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:53:48,813 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:48,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 636 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:53:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:53:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:53:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 79 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 20 states have return successors, (45), 40 states have call predecessors, (45), 39 states have call successors, (45) [2023-11-24 23:53:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2023-11-24 23:53:48,832 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 124 [2023-11-24 23:53:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:48,833 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2023-11-24 23:53:48,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 20.666666666666668) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-24 23:53:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2023-11-24 23:53:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 23:53:48,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:48,836 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:48,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:49,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:49,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:53:49,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -183699404, now seen corresponding path program 1 times [2023-11-24 23:53:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:49,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008089801] [2023-11-24 23:53:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-24 23:53:50,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008089801] [2023-11-24 23:53:50,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008089801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:50,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541869066] [2023-11-24 23:53:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:50,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:50,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:50,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d93968d-2d7b-49e5-887c-06804c711c64/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:53:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:51,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-24 23:53:51,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:51,646 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 23:53:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:53:52,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541869066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:52,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:53:52,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2023-11-24 23:53:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150701997] [2023-11-24 23:53:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:53:52,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:53:52,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:53:52,029 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 12 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-24 23:53:56,560 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 23:53:58,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:00,763 WARN L539 Checker$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 23:54:02,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:04,879 WARN L539 Checker$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 23:54:07,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:09,786 WARN L539 Checker$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 23:54:11,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:13,853 WARN L539 Checker$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 23:54:15,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:17,921 WARN L539 Checker$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 23:54:19,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:21,983 WARN L539 Checker$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 23:54:24,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:54:26,170 WARN L539 Checker$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]