./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.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_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/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_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/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_8698d821-6600-4b44-b71b-9a4ba40fbf07/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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:22:22,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:22:22,646 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:22:22,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:22:22,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:22:22,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:22:22,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:22:22,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:22:22,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:22:22,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:22:22,705 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:22:22,706 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:22:22,706 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:22:22,708 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:22:22,709 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:22:22,709 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:22:22,710 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:22:22,710 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:22:22,711 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:22:22,711 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:22:22,712 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:22:22,712 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:22:22,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:22:22,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:22:22,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:22:22,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:22:22,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:22:22,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:22:22,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:22:22,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:22:22,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:22:22,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:22:22,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:22:22,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:22:22,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:22:22,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:22:22,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:22:22,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:22:22,720 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:22:22,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:22:22,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:22:22,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:22:22,721 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:22:22,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:22:22,722 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_8698d821-6600-4b44-b71b-9a4ba40fbf07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2023-11-24 23:22:23,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:22:23,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:22:23,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:22:23,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:22:23,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:22:23,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-24 23:22:26,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:22:26,864 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:22:26,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-24 23:22:26,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/data/824da35ad/8e7097f80c8548769776db4a72088396/FLAGb60cc78e0 [2023-11-24 23:22:26,932 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/data/824da35ad/8e7097f80c8548769776db4a72088396 [2023-11-24 23:22:26,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:22:26,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:22:26,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:22:26,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:22:26,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:22:26,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66585d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26, skipping insertion in model container [2023-11-24 23:22:26,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:27,087 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:22:27,439 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_8698d821-6600-4b44-b71b-9a4ba40fbf07/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2023-11-24 23:22:27,449 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_8698d821-6600-4b44-b71b-9a4ba40fbf07/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2023-11-24 23:22:28,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,497 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,515 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,537 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,538 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:28,550 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,042 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:22:29,044 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:22:29,045 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:22:29,047 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:22:29,048 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:22:29,049 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:22:29,050 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:22:29,051 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:22:29,052 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:22:29,052 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:22:29,276 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,367 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,374 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,383 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,384 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,400 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:22:29,464 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:22:29,491 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_8698d821-6600-4b44-b71b-9a4ba40fbf07/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2023-11-24 23:22:29,493 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_8698d821-6600-4b44-b71b-9a4ba40fbf07/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2023-11-24 23:22:29,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,573 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,576 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,590 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,591 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,592 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,664 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:22:29,666 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:22:29,666 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:22:29,667 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:22:29,669 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:22:29,670 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:22:29,671 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:22:29,672 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:22:29,673 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:22:29,673 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:22:29,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,753 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-24 23:22:29,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,803 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,805 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,809 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:22:29,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:22:30,194 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,195 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,195 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,195 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,195 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,196 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,197 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,197 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,197 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,197 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,198 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,199 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,199 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,200 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,200 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:22:30,210 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:22:30,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30 WrapperNode [2023-11-24 23:22:30,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:22:30,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:22:30,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:22:30,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:22:30,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,456 INFO L138 Inliner]: procedures = 696, calls = 1922, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1063 [2023-11-24 23:22:30,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:22:30,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:22:30,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:22:30,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:22:30,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:22:30,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:22:30,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:22:30,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:22:30,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (1/1) ... [2023-11-24 23:22:30,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:22:30,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:30,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:22:30,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-24 23:22:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-24 23:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-24 23:22:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-24 23:22:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:22:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-24 23:22:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-24 23:22:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-24 23:22:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-24 23:22:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:22:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:22:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-24 23:22:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-24 23:22:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:22:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:22:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:22:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:22:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:22:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:22:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-24 23:22:30,746 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-24 23:22:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:22:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:22:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:22:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-24 23:22:30,747 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-24 23:22:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-24 23:22:30,747 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-24 23:22:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:22:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:22:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:22:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:22:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:22:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:22:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:22:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-24 23:22:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-24 23:22:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-24 23:22:30,749 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-24 23:22:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-24 23:22:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-24 23:22:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:22:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:22:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:22:30,750 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:22:30,750 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-24 23:22:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-24 23:22:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-24 23:22:30,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-24 23:22:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:22:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:22:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:22:30,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-24 23:22:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-24 23:22:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:22:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:22:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:22:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:22:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:22:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:22:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:22:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-24 23:22:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-24 23:22:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:22:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:22:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:22:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-24 23:22:30,754 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-24 23:22:31,171 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:22:31,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:22:33,612 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:22:34,019 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:22:34,019 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-24 23:22:34,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:22:34 BoogieIcfgContainer [2023-11-24 23:22:34,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:22:34,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:22:34,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:22:34,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:22:34,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:22:26" (1/3) ... [2023-11-24 23:22:34,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279d78b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:22:34, skipping insertion in model container [2023-11-24 23:22:34,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:30" (2/3) ... [2023-11-24 23:22:34,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279d78b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:22:34, skipping insertion in model container [2023-11-24 23:22:34,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:22:34" (3/3) ... [2023-11-24 23:22:34,032 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2023-11-24 23:22:34,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:22:34,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:22:34,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:22:34,132 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;@d728c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:22:34,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:22:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 200 states have (on average 1.22) internal successors, (244), 205 states have internal predecessors, (244), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-24 23:22:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-24 23:22:34,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:34,169 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 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] [2023-11-24 23:22:34,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:34,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1565301479, now seen corresponding path program 1 times [2023-11-24 23:22:34,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:34,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749457430] [2023-11-24 23:22:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-24 23:22:35,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:35,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749457430] [2023-11-24 23:22:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749457430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921534925] [2023-11-24 23:22:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:35,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:35,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:35,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:22:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:36,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:22:36,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-24 23:22:36,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:36,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921534925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:36,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:22:36,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-24 23:22:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101898137] [2023-11-24 23:22:36,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:36,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:22:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:22:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:22:36,626 INFO L87 Difference]: Start difference. First operand has 390 states, 200 states have (on average 1.22) internal successors, (244), 205 states have internal predecessors, (244), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-24 23:22:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:37,630 INFO L93 Difference]: Finished difference Result 711 states and 1086 transitions. [2023-11-24 23:22:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:22:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2023-11-24 23:22:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:37,648 INFO L225 Difference]: With dead ends: 711 [2023-11-24 23:22:37,648 INFO L226 Difference]: Without dead ends: 387 [2023-11-24 23:22:37,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 23:22:37,665 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:37,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 514 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:22:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-24 23:22:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-11-24 23:22:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1909547738693467) internal successors, (237), 202 states have internal predecessors, (237), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-11-24 23:22:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 555 transitions. [2023-11-24 23:22:37,768 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 555 transitions. Word has length 106 [2023-11-24 23:22:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:37,770 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 555 transitions. [2023-11-24 23:22:37,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-24 23:22:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 555 transitions. [2023-11-24 23:22:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-24 23:22:37,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:37,775 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:22:37,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:37,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:22:37,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:37,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1141934124, now seen corresponding path program 1 times [2023-11-24 23:22:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127151531] [2023-11-24 23:22:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-24 23:22:38,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127151531] [2023-11-24 23:22:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127151531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:38,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726757784] [2023-11-24 23:22:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:38,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:38,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:38,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:22:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:39,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:22:39,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-24 23:22:39,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726757784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:39,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:22:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-24 23:22:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753882601] [2023-11-24 23:22:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:39,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:22:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:22:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:22:39,653 INFO L87 Difference]: Start difference. First operand 387 states and 555 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-24 23:22:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:41,894 INFO L93 Difference]: Finished difference Result 746 states and 1086 transitions. [2023-11-24 23:22:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:22:41,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 118 [2023-11-24 23:22:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:41,910 INFO L225 Difference]: With dead ends: 746 [2023-11-24 23:22:41,910 INFO L226 Difference]: Without dead ends: 389 [2023-11-24 23:22:41,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:22:41,920 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 50 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:41,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1845 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 23:22:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-24 23:22:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-11-24 23:22:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 200 states have (on average 1.19) internal successors, (238), 204 states have internal predecessors, (238), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2023-11-24 23:22:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 569 transitions. [2023-11-24 23:22:42,011 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 569 transitions. Word has length 118 [2023-11-24 23:22:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:42,014 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 569 transitions. [2023-11-24 23:22:42,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-24 23:22:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 569 transitions. [2023-11-24 23:22:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-24 23:22:42,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:42,023 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 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] [2023-11-24 23:22:42,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:42,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:22:42,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:42,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2121326928, now seen corresponding path program 1 times [2023-11-24 23:22:42,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:42,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541669914] [2023-11-24 23:22:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:42,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-24 23:22:43,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541669914] [2023-11-24 23:22:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541669914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117198669] [2023-11-24 23:22:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:43,032 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:43,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:22:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:43,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:22:43,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-24 23:22:43,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:43,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117198669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:43,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:22:43,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-24 23:22:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367505954] [2023-11-24 23:22:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:43,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:22:43,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:43,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:22:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:22:43,903 INFO L87 Difference]: Start difference. First operand 389 states and 569 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-24 23:22:45,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:22:47,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:22:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:48,731 INFO L93 Difference]: Finished difference Result 761 states and 1145 transitions. [2023-11-24 23:22:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:22:48,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 126 [2023-11-24 23:22:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:48,737 INFO L225 Difference]: With dead ends: 761 [2023-11-24 23:22:48,737 INFO L226 Difference]: Without dead ends: 402 [2023-11-24 23:22:48,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:22:48,742 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 65 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:48,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2692 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-24 23:22:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-24 23:22:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2023-11-24 23:22:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-24 23:22:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-24 23:22:48,793 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 126 [2023-11-24 23:22:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:48,794 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-24 23:22:48,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-24 23:22:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-24 23:22:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-24 23:22:48,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:48,797 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 2, 2, 2, 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] [2023-11-24 23:22:48,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:49,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:49,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:49,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1326062887, now seen corresponding path program 1 times [2023-11-24 23:22:49,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:49,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214229896] [2023-11-24 23:22:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:49,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:49,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:49,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166065162] [2023-11-24 23:22:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:49,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:49,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:49,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:22:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:50,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:22:50,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-24 23:22:50,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:50,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214229896] [2023-11-24 23:22:50,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166065162] [2023-11-24 23:22:50,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166065162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:50,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:50,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:22:50,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221624699] [2023-11-24 23:22:50,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:50,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:22:50,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:22:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:22:50,107 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-24 23:22:51,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:22:53,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:22:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:54,921 INFO L93 Difference]: Finished difference Result 776 states and 1192 transitions. [2023-11-24 23:22:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:22:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 135 [2023-11-24 23:22:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:54,926 INFO L225 Difference]: With dead ends: 776 [2023-11-24 23:22:54,926 INFO L226 Difference]: Without dead ends: 406 [2023-11-24 23:22:54,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:22:54,934 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 57 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:54,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2298 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-24 23:22:54,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-24 23:22:54,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2023-11-24 23:22:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-24 23:22:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-24 23:22:54,978 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 135 [2023-11-24 23:22:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:54,980 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-24 23:22:54,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-24 23:22:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-24 23:22:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-24 23:22:54,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:54,984 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 2, 2, 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, 1, 1] [2023-11-24 23:22:54,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:22:55,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:55,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:55,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:55,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2012445960, now seen corresponding path program 1 times [2023-11-24 23:22:55,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83180953] [2023-11-24 23:22:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:55,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146444670] [2023-11-24 23:22:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:55,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:55,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:55,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:55,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:22:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:56,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:22:56,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-24 23:22:56,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:56,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:56,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83180953] [2023-11-24 23:22:56,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:56,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146444670] [2023-11-24 23:22:56,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146444670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:56,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:56,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 23:22:56,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729685213] [2023-11-24 23:22:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:56,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:22:56,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:22:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:22:56,244 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-24 23:22:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:59,520 INFO L93 Difference]: Finished difference Result 778 states and 1184 transitions. [2023-11-24 23:22:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:22:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 143 [2023-11-24 23:22:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:59,525 INFO L225 Difference]: With dead ends: 778 [2023-11-24 23:22:59,525 INFO L226 Difference]: Without dead ends: 408 [2023-11-24 23:22:59,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:22:59,529 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 80 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:59,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3107 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 23:22:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-24 23:22:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 400. [2023-11-24 23:22:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-24 23:22:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-24 23:22:59,559 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 143 [2023-11-24 23:22:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:59,559 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-24 23:22:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-24 23:22:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-24 23:22:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-24 23:22:59,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:59,562 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:22:59,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:59,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:59,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:59,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1280011673, now seen corresponding path program 2 times [2023-11-24 23:22:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759219622] [2023-11-24 23:22:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:59,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294085832] [2023-11-24 23:22:59,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:22:59,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:59,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:59,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:23:00,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:23:00,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:23:00,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:23:00,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-24 23:23:00,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:23:00,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759219622] [2023-11-24 23:23:00,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294085832] [2023-11-24 23:23:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294085832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:23:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:23:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:23:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886383863] [2023-11-24 23:23:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:23:00,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:23:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:00,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:23:00,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:23:00,678 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-24 23:23:02,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:23:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:04,061 INFO L93 Difference]: Finished difference Result 731 states and 1128 transitions. [2023-11-24 23:23:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:23:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 152 [2023-11-24 23:23:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:04,066 INFO L225 Difference]: With dead ends: 731 [2023-11-24 23:23:04,066 INFO L226 Difference]: Without dead ends: 400 [2023-11-24 23:23:04,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 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 23:23:04,071 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:04,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1860 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-24 23:23:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-24 23:23:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2023-11-24 23:23:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (189), 161 states have call predecessors, (189), 160 states have call successors, (189) [2023-11-24 23:23:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 599 transitions. [2023-11-24 23:23:04,100 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 599 transitions. Word has length 152 [2023-11-24 23:23:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:04,101 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 599 transitions. [2023-11-24 23:23:04,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-24 23:23:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 599 transitions. [2023-11-24 23:23:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 23:23:04,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:04,104 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2023-11-24 23:23:04,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:04,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:04,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:23:04,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1452579312, now seen corresponding path program 3 times [2023-11-24 23:23:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135558351] [2023-11-24 23:23:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:04,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:04,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856603237] [2023-11-24 23:23:04,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:23:04,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:04,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:04,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:04,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8698d821-6600-4b44-b71b-9a4ba40fbf07/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:23:04,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:23:04,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:23:04,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:23:05,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-24 23:23:05,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:23:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-24 23:23:05,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135558351] [2023-11-24 23:23:05,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856603237] [2023-11-24 23:23:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856603237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:23:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840795280] [2023-11-24 23:23:05,661 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-11-24 23:23:05,662 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:23:05,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:23:05,670 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:23:05,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs