./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/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_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/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_f3456444-e8d6-4326-bf13-51174ae063b5/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 418444d45b0c7850a9989314dcd5f57e0b0ef1cb83134fc862bc4bb0b0db0821 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:36,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:36,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:10:36,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:36,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:36,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:36,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:36,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:36,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:36,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:36,456 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:36,456 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:36,457 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:36,458 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:36,458 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:36,459 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:36,460 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:36,460 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:36,461 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:36,462 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:36,462 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:36,463 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:36,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:36,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:36,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:36,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:36,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:36,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:36,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:36,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:36,468 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:36,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:36,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:36,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:36,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:36,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:36,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:36,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:36,470 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:36,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:36,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:36,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:36,472 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:36,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:36,472 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_f3456444-e8d6-4326-bf13-51174ae063b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418444d45b0c7850a9989314dcd5f57e0b0ef1cb83134fc862bc4bb0b0db0821 [2023-11-25 00:10:36,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:36,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:36,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:36,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:36,783 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:36,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i [2023-11-25 00:10:40,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:40,735 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:40,736 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i [2023-11-25 00:10:40,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/data/5de08820f/d3623692267d4906a1dd8894e057edab/FLAG7b5eb78e3 [2023-11-25 00:10:40,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/data/5de08820f/d3623692267d4906a1dd8894e057edab [2023-11-25 00:10:40,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:40,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:40,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:40,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:40,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:40,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:40" (1/1) ... [2023-11-25 00:10:40,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488455a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:40, skipping insertion in model container [2023-11-25 00:10:40,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:40" (1/1) ... [2023-11-25 00:10:40,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:41,302 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_f3456444-e8d6-4326-bf13-51174ae063b5/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4491,4504] [2023-11-25 00:10:41,313 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_f3456444-e8d6-4326-bf13-51174ae063b5/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4551,4564] [2023-11-25 00:10:42,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,827 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,831 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,832 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:42,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:43,583 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:10:43,592 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:10:43,593 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:10:43,598 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:10:43,600 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:10:43,604 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:10:43,605 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:10:43,606 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:10:43,607 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:10:43,611 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:10:44,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,435 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,445 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,470 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,471 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:44,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:44,641 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_f3456444-e8d6-4326-bf13-51174ae063b5/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4491,4504] [2023-11-25 00:10:44,642 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_f3456444-e8d6-4326-bf13-51174ae063b5/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness_negated.i[4551,4564] [2023-11-25 00:10:44,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,721 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,721 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,722 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,732 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,734 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,735 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,736 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,737 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,738 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,739 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,739 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:44,785 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:10:44,786 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:10:44,787 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:10:44,788 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:10:44,789 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:10:44,791 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:10:44,792 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:10:44,793 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:10:44,794 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:10:44,795 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:10:44,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-25 00:10:45,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,079 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,107 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:10:45,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:45,479 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,479 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,479 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,479 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,480 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,480 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,480 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,480 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,480 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,481 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,481 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,481 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,481 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,481 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,481 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,482 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,482 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,482 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:45,491 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:45,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45 WrapperNode [2023-11-25 00:10:45,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:45,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:45,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:45,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:45,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,848 INFO L138 Inliner]: procedures = 772, calls = 2456, calls flagged for inlining = 68, calls inlined = 18, statements flattened = 968 [2023-11-25 00:10:45,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:45,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:45,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:45,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:45,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:45,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:46,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:46,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:46,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:46,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (1/1) ... [2023-11-25 00:10:46,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:46,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:46,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:46,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-25 00:10:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2023-11-25 00:10:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2023-11-25 00:10:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:10:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:10:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:10:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:10:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:10:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-25 00:10:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-25 00:10:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:10:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:10:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:46,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:10:46,232 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:10:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:10:46,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:10:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:10:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-25 00:10:46,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-25 00:10:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:10:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:10:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:10:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:10:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-25 00:10:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-25 00:10:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-25 00:10:46,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-25 00:10:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-25 00:10:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-25 00:10:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-25 00:10:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-25 00:10:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:10:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2023-11-25 00:10:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2023-11-25 00:10:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-25 00:10:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-25 00:10:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-25 00:10:46,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-25 00:10:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-25 00:10:46,238 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-25 00:10:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-25 00:10:46,240 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-25 00:10:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:10:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:10:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-25 00:10:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-25 00:10:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:10:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2023-11-25 00:10:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2023-11-25 00:10:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:10:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:10:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-25 00:10:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-25 00:10:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2023-11-25 00:10:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2023-11-25 00:10:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-25 00:10:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-25 00:10:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:10:46,714 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:46,718 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:46,871 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-25 00:10:46,970 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-25 00:10:48,036 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2023-11-25 00:10:48,037 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2023-11-25 00:10:48,037 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-25 00:10:48,037 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2023-11-25 00:10:48,037 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2023-11-25 00:10:48,080 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:48,374 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:48,375 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-25 00:10:48,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:48 BoogieIcfgContainer [2023-11-25 00:10:48,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:48,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:48,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:48,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:48,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:40" (1/3) ... [2023-11-25 00:10:48,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa621f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:48, skipping insertion in model container [2023-11-25 00:10:48,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:45" (2/3) ... [2023-11-25 00:10:48,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa621f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:48, skipping insertion in model container [2023-11-25 00:10:48,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:48" (3/3) ... [2023-11-25 00:10:48,428 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness_negated.i [2023-11-25 00:10:48,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:48,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:10:48,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:48,562 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;@630b0fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:48,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:10:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 134 states have internal predecessors, (171), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-25 00:10:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-25 00:10:48,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:48,598 INFO L195 NwaCegarLoop]: trace histogram [17, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-25 00:10:48,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:48,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1114410107, now seen corresponding path program 1 times [2023-11-25 00:10:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:48,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236609974] [2023-11-25 00:10:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:49,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:10:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439941060] [2023-11-25 00:10:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:49,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:49,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:10:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:50,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 3156 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:10:50,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-11-25 00:10:50,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:50,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236609974] [2023-11-25 00:10:50,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:10:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439941060] [2023-11-25 00:10:50,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439941060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:50,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:50,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:10:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791368110] [2023-11-25 00:10:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:10:50,688 INFO L87 Difference]: Start difference. First operand has 248 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 134 states have internal predecessors, (171), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-25 00:10:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:51,544 INFO L93 Difference]: Finished difference Result 498 states and 730 transitions. [2023-11-25 00:10:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:51,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 213 [2023-11-25 00:10:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:51,564 INFO L225 Difference]: With dead ends: 498 [2023-11-25 00:10:51,564 INFO L226 Difference]: Without dead ends: 250 [2023-11-25 00:10:51,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:10:51,577 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:51,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1212 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:10:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-25 00:10:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-11-25 00:10:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 136 states have internal predecessors, (163), 89 states have call successors, (89), 24 states have call predecessors, (89), 25 states have return successors, (89), 89 states have call predecessors, (89), 88 states have call successors, (89) [2023-11-25 00:10:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 341 transitions. [2023-11-25 00:10:51,719 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 341 transitions. Word has length 213 [2023-11-25 00:10:51,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:51,721 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 341 transitions. [2023-11-25 00:10:51,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-25 00:10:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 341 transitions. [2023-11-25 00:10:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-25 00:10:51,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:51,738 INFO L195 NwaCegarLoop]: trace histogram [17, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-25 00:10:51,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:51,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:10:51,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:51,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1145489787, now seen corresponding path program 1 times [2023-11-25 00:10:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64614254] [2023-11-25 00:10:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-11-25 00:10:56,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:10:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64614254] [2023-11-25 00:10:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64614254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:10:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352080685] [2023-11-25 00:10:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:56,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:56,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:56,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:10:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:57,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 3152 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-25 00:10:57,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-25 00:10:57,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352080685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:10:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-25 00:10:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664164067] [2023-11-25 00:10:57,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:10:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:10:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:10:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:10:57,383 INFO L87 Difference]: Start difference. First operand 250 states and 341 transitions. Second operand has 6 states, 3 states have (on average 23.0) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-25 00:10:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:58,103 INFO L93 Difference]: Finished difference Result 499 states and 696 transitions. [2023-11-25 00:10:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:10:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 23.0) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 229 [2023-11-25 00:10:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:58,110 INFO L225 Difference]: With dead ends: 499 [2023-11-25 00:10:58,110 INFO L226 Difference]: Without dead ends: 252 [2023-11-25 00:10:58,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:10:58,114 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:58,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1401 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:10:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-25 00:10:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-11-25 00:10:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 136 states have (on average 1.2058823529411764) internal successors, (164), 138 states have internal predecessors, (164), 89 states have call successors, (89), 24 states have call predecessors, (89), 26 states have return successors, (106), 89 states have call predecessors, (106), 88 states have call successors, (106) [2023-11-25 00:10:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 359 transitions. [2023-11-25 00:10:58,153 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 359 transitions. Word has length 229 [2023-11-25 00:10:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:58,154 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 359 transitions. [2023-11-25 00:10:58,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 23.0) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-25 00:10:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 359 transitions. [2023-11-25 00:10:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-25 00:10:58,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:58,164 INFO L195 NwaCegarLoop]: trace histogram [17, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-25 00:10:58,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:58,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:58,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash 45152394, now seen corresponding path program 1 times [2023-11-25 00:10:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:58,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611241144] [2023-11-25 00:10:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-25 00:11:00,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611241144] [2023-11-25 00:11:00,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611241144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050413446] [2023-11-25 00:11:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:00,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:00,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:00,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:00,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3456444-e8d6-4326-bf13-51174ae063b5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:11:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:01,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-25 00:11:01,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:01,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-25 00:11:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-25 00:11:02,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050413446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:02,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:02,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2023-11-25 00:11:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488210314] [2023-11-25 00:11:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:02,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-25 00:11:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-25 00:11:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-25 00:11:02,275 INFO L87 Difference]: Start difference. First operand 252 states and 359 transitions. Second operand has 14 states, 9 states have (on average 8.0) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (46), 3 states have call predecessors, (46), 6 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2023-11-25 00:11:06,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-25 00:11:08,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:10,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:12,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:14,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:17,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:19,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:21,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:23,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:26,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:28,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:30,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:11:32,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]