./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.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_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/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_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/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_ebf35b95-7b4b-401d-9022-b9696923771a/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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:45,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:45,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:02:45,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:45,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:45,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:45,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:45,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:45,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:45,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:45,945 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:45,946 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:45,946 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:45,947 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:02:45,947 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:45,948 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:45,948 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:02:45,949 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:02:45,949 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:45,949 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:02:45,950 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:02:45,954 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:02:45,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:45,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:45,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:02:45,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:45,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:45,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:45,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:45,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:45,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:45,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:45,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:45,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:45,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:45,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:45,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:45,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:45,961 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:02:45,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:02:45,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:45,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:45,962 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:45,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:45,963 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_ebf35b95-7b4b-401d-9022-b9696923771a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2023-11-25 00:02:46,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:46,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:46,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:46,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:46,311 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:46,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2023-11-25 00:02:49,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:50,042 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:50,043 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2023-11-25 00:02:50,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/data/c64e31d17/84a8194f150a4ec78875652f45092499/FLAG92cb26f85 [2023-11-25 00:02:50,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/data/c64e31d17/84a8194f150a4ec78875652f45092499 [2023-11-25 00:02:50,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:50,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:50,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:50,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:50,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:50,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:50" (1/1) ... [2023-11-25 00:02:50,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a314aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:50, skipping insertion in model container [2023-11-25 00:02:50,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:50" (1/1) ... [2023-11-25 00:02:50,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:50,700 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_ebf35b95-7b4b-401d-9022-b9696923771a/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2023-11-25 00:02:50,712 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_ebf35b95-7b4b-401d-9022-b9696923771a/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2023-11-25 00:02:52,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,201 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,203 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,204 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,223 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,224 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:52,822 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:02:52,824 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:02:52,825 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:02:52,827 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:02:52,828 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:02:52,829 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:02:52,830 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:02:52,831 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:02:52,832 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:02:52,833 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:02:53,429 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,431 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,470 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,507 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,509 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,512 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,512 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:53,611 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:53,640 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_ebf35b95-7b4b-401d-9022-b9696923771a/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2023-11-25 00:02:53,641 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_ebf35b95-7b4b-401d-9022-b9696923771a/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2023-11-25 00:02:53,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,752 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:02:53,753 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:02:53,754 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:02:53,755 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:02:53,756 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:02:53,757 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:02:53,757 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:02:53,758 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:02:53,759 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:02:53,759 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:02:53,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-25 00:02:53,876 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,933 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,933 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,936 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,951 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,952 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,952 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,955 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:02:53,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:54,322 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,322 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,323 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,323 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,323 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,323 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,323 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,323 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,324 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,324 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,324 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,324 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,324 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,324 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,325 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,325 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,325 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,325 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:54,333 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:54,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54 WrapperNode [2023-11-25 00:02:54,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:54,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:54,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:54,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:54,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,599 INFO L138 Inliner]: procedures = 772, calls = 2456, calls flagged for inlining = 68, calls inlined = 18, statements flattened = 968 [2023-11-25 00:02:54,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:54,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:54,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:54,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:54,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,626 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:54,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:54,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:54,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:54,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (1/1) ... [2023-11-25 00:02:54,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:54,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:54,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:54,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-25 00:02:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2023-11-25 00:02:54,854 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2023-11-25 00:02:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:02:54,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:02:54,855 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:02:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:02:54,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:02:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-25 00:02:54,855 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-25 00:02:54,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:02:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:02:54,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:54,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:02:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:02:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:02:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:02:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:02:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-25 00:02:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-25 00:02:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:02:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:02:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:02:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:02:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-25 00:02:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-25 00:02:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-25 00:02:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-25 00:02:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-25 00:02:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-25 00:02:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-25 00:02:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-25 00:02:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:02:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2023-11-25 00:02:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2023-11-25 00:02:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-25 00:02:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-25 00:02:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-25 00:02:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-25 00:02:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-25 00:02:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-25 00:02:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-25 00:02:54,863 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-25 00:02:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:02:54,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:02:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-25 00:02:54,864 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-25 00:02:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:02:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2023-11-25 00:02:54,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2023-11-25 00:02:54,865 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:02:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:02:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-25 00:02:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-25 00:02:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2023-11-25 00:02:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2023-11-25 00:02:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-25 00:02:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-25 00:02:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:02:55,291 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:55,294 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:55,420 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-25 00:02:55,532 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-25 00:02:56,398 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2023-11-25 00:02:56,399 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2023-11-25 00:02:56,399 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-25 00:02:56,399 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2023-11-25 00:02:56,399 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2023-11-25 00:02:56,431 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:56,766 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:56,766 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-25 00:02:56,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:56 BoogieIcfgContainer [2023-11-25 00:02:56,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:56,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:56,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:56,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:56,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:50" (1/3) ... [2023-11-25 00:02:56,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc73ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:56, skipping insertion in model container [2023-11-25 00:02:56,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:54" (2/3) ... [2023-11-25 00:02:56,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc73ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:56, skipping insertion in model container [2023-11-25 00:02:56,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:56" (3/3) ... [2023-11-25 00:02:56,781 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2023-11-25 00:02:56,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:56,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:02:56,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:56,871 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;@22947920, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:56,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:02:56,877 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 00:02:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-25 00:02:56,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:56,900 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 00:02:56,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:56,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1053360771, now seen corresponding path program 1 times [2023-11-25 00:02:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:56,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392651812] [2023-11-25 00:02:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:56,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:57,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:57,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238183591] [2023-11-25 00:02:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:57,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:57,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:02:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:58,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 3156 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:02:58,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:58,605 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 00:02:58,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:58,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392651812] [2023-11-25 00:02:58,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238183591] [2023-11-25 00:02:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238183591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:58,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:02:58,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111703208] [2023-11-25 00:02:58,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:02:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:02:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:02:58,664 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 00:02:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:59,271 INFO L93 Difference]: Finished difference Result 498 states and 730 transitions. [2023-11-25 00:02:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:02:59,274 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 00:02:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:59,290 INFO L225 Difference]: With dead ends: 498 [2023-11-25 00:02:59,290 INFO L226 Difference]: Without dead ends: 250 [2023-11-25 00:02:59,300 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 00:02:59,304 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:59,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1212 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:02:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-25 00:02:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-11-25 00:02:59,373 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 00:02:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 341 transitions. [2023-11-25 00:02:59,379 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 341 transitions. Word has length 213 [2023-11-25 00:02:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:59,381 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 341 transitions. [2023-11-25 00:02:59,382 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 00:02:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 341 transitions. [2023-11-25 00:02:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-25 00:02:59,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:59,388 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 00:02:59,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:59,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:59,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:59,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1515681917, now seen corresponding path program 1 times [2023-11-25 00:02:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008560306] [2023-11-25 00:02:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:03,266 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 00:03:03,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008560306] [2023-11-25 00:03:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008560306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:03:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530127971] [2023-11-25 00:03:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:03,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:03,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:03,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:03,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:03:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:04,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 3152 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-25 00:03:04,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:04,192 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 00:03:04,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530127971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:04,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:03:04,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-25 00:03:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367268517] [2023-11-25 00:03:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:03:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:03:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:03:04,197 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 00:03:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:04,786 INFO L93 Difference]: Finished difference Result 499 states and 696 transitions. [2023-11-25 00:03:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:03:04,788 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 00:03:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:04,793 INFO L225 Difference]: With dead ends: 499 [2023-11-25 00:03:04,794 INFO L226 Difference]: Without dead ends: 252 [2023-11-25 00:03:04,795 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 00:03:04,797 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:04,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1401 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:03:04,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-25 00:03:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-11-25 00:03:04,846 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 00:03:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 359 transitions. [2023-11-25 00:03:04,849 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 359 transitions. Word has length 229 [2023-11-25 00:03:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:04,850 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 359 transitions. [2023-11-25 00:03:04,850 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 00:03:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 359 transitions. [2023-11-25 00:03:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-25 00:03:04,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:04,859 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 00:03:04,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-25 00:03:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:05,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:05,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash 71108876, now seen corresponding path program 1 times [2023-11-25 00:03:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772004651] [2023-11-25 00:03:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:07,199 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 00:03:07,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772004651] [2023-11-25 00:03:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772004651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:03:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038738444] [2023-11-25 00:03:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:07,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:07,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:07,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebf35b95-7b4b-401d-9022-b9696923771a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:03:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:08,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-25 00:03:08,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:08,331 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 00:03:08,781 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 00:03:08,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:08,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038738444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:08,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:03:08,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2023-11-25 00:03:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610407973] [2023-11-25 00:03:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:08,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-25 00:03:08,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-25 00:03:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-25 00:03:08,785 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 00:03:13,049 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 00:03:15,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:17,231 WARN L539 Checker$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 00:03:19,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:21,333 WARN L539 Checker$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 00:03:23,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:25,517 WARN L539 Checker$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 00:03:27,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:30,192 WARN L539 Checker$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 00:03:32,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:34,267 WARN L539 Checker$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 00:03:36,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:38,290 WARN L539 Checker$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 00:03:40,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-25 00:03:42,350 WARN L539 Checker$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 00:03:44,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:03:46,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]