./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/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 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:15,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:15,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:04:15,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:15,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:15,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:15,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:15,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:15,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:15,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:15,864 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:15,866 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:15,866 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:15,868 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:04:15,869 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:15,869 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:15,870 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:04:15,870 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:04:15,871 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:15,871 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:04:15,872 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:04:15,872 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:04:15,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:15,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:15,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:15,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:15,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:15,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:15,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:15,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:15,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:15,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:15,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:15,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:15,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:15,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:15,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:15,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:04:15,882 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:04:15,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:04:15,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:15,883 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:04:15,883 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:15,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:15,884 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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa [2023-11-25 00:04:16,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:16,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:16,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:16,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:16,280 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:16,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2023-11-25 00:04:19,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:19,925 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:19,925 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2023-11-25 00:04:19,958 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/data/28d3c6576/07a68228df9c4c269085a01b6e4040ba/FLAGac2baed6a [2023-11-25 00:04:19,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/data/28d3c6576/07a68228df9c4c269085a01b6e4040ba [2023-11-25 00:04:19,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:19,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:19,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:19,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:20,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:20,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:19" (1/1) ... [2023-11-25 00:04:20,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1313dedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:20, skipping insertion in model container [2023-11-25 00:04:20,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:19" (1/1) ... [2023-11-25 00:04:20,200 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:20,510 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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2023-11-25 00:04:20,521 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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2023-11-25 00:04:21,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,512 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:21,515 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,034 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:04:22,036 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:04:22,037 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:04:22,038 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:04:22,040 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:04:22,041 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:04:22,042 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:04:22,043 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:04:22,043 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:04:22,044 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:04:22,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:22,625 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:04:22,640 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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2023-11-25 00:04:22,641 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_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2023-11-25 00:04:22,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,734 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,735 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,735 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,792 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:04:22,797 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:04:22,798 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:04:22,798 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:04:22,799 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:04:22,800 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:04:22,800 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:04:22,801 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:04:22,801 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:04:22,802 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:04:22,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-25 00:04:22,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:22,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-25 00:04:22,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:23,310 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,310 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,311 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,311 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,312 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,313 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,313 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,313 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,313 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,314 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,314 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,315 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,315 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,316 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,316 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,316 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,316 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,316 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:23,324 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:04:23,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23 WrapperNode [2023-11-25 00:04:23,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:23,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:23,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:04:23,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:04:23,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,554 INFO L138 Inliner]: procedures = 689, calls = 2740, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 792 [2023-11-25 00:04:23,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:23,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:04:23,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:04:23,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:04:23,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:04:23,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:04:23,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:04:23,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:04:23,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (1/1) ... [2023-11-25 00:04:23,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:23,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:23,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:04:23,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:04:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-25 00:04:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-25 00:04:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:04:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:04:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:04:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-25 00:04:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-25 00:04:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-25 00:04:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:04:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:04:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:04:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-25 00:04:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-25 00:04:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:04:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:04:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:04:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:04:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:04:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:04:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:04:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:04:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:04:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:04:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:04:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-25 00:04:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-25 00:04:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:04:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:04:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-25 00:04:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-25 00:04:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:04:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:04:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-25 00:04:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-25 00:04:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:04:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-25 00:04:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-25 00:04:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:04:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2023-11-25 00:04:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2023-11-25 00:04:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:04:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:04:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-25 00:04:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-25 00:04:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:04:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:04:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:04:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-25 00:04:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:04:24,208 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:04:24,211 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:04:24,453 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-25 00:04:25,898 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:04:26,110 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:04:26,110 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:04:26,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:26 BoogieIcfgContainer [2023-11-25 00:04:26,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:04:26,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:04:26,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:04:26,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:04:26,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:04:19" (1/3) ... [2023-11-25 00:04:26,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd42b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:26, skipping insertion in model container [2023-11-25 00:04:26,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:23" (2/3) ... [2023-11-25 00:04:26,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd42b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:26, skipping insertion in model container [2023-11-25 00:04:26,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:26" (3/3) ... [2023-11-25 00:04:26,121 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_array_harness.i [2023-11-25 00:04:26,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:04:26,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:04:26,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:04:26,205 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;@56872400, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:04:26,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:04:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-25 00:04:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-25 00:04:26,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:26,221 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-25 00:04:26,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:26,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1946586981, now seen corresponding path program 1 times [2023-11-25 00:04:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396141762] [2023-11-25 00:04:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-25 00:04:27,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396141762] [2023-11-25 00:04:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396141762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:27,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:04:27,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450831978] [2023-11-25 00:04:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:04:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:04:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:04:27,321 INFO L87 Difference]: Start difference. First operand has 109 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-25 00:04:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:27,518 INFO L93 Difference]: Finished difference Result 148 states and 188 transitions. [2023-11-25 00:04:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:04:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 54 [2023-11-25 00:04:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:27,531 INFO L225 Difference]: With dead ends: 148 [2023-11-25 00:04:27,532 INFO L226 Difference]: Without dead ends: 110 [2023-11-25 00:04:27,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 00:04:27,539 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:27,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 460 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:04:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-25 00:04:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-25 00:04:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 59 states have (on average 1.152542372881356) internal successors, (68), 60 states have internal predecessors, (68), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-25 00:04:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2023-11-25 00:04:27,595 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 54 [2023-11-25 00:04:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:27,597 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2023-11-25 00:04:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-25 00:04:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2023-11-25 00:04:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-25 00:04:27,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:27,602 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-25 00:04:27,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:04:27,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:27,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -585616692, now seen corresponding path program 1 times [2023-11-25 00:04:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:27,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774337041] [2023-11-25 00:04:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-25 00:04:28,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:28,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774337041] [2023-11-25 00:04:28,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774337041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:28,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:28,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:04:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340027947] [2023-11-25 00:04:28,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:04:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:04:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:04:28,368 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-25 00:04:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:28,546 INFO L93 Difference]: Finished difference Result 141 states and 169 transitions. [2023-11-25 00:04:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:04:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 58 [2023-11-25 00:04:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:28,550 INFO L225 Difference]: With dead ends: 141 [2023-11-25 00:04:28,550 INFO L226 Difference]: Without dead ends: 110 [2023-11-25 00:04:28,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:04:28,552 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:28,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:04:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-25 00:04:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2023-11-25 00:04:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-25 00:04:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2023-11-25 00:04:28,569 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 58 [2023-11-25 00:04:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:28,570 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2023-11-25 00:04:28,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-25 00:04:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2023-11-25 00:04:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-25 00:04:28,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:28,573 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:28,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:04:28,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:28,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:28,574 INFO L85 PathProgramCache]: Analyzing trace with hash -467621996, now seen corresponding path program 1 times [2023-11-25 00:04:28,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:28,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677075958] [2023-11-25 00:04:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:28,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-25 00:04:29,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:29,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677075958] [2023-11-25 00:04:29,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677075958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:29,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:04:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141136359] [2023-11-25 00:04:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:29,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:04:29,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:29,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:04:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:04:29,366 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-25 00:04:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:29,519 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2023-11-25 00:04:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:04:29,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 89 [2023-11-25 00:04:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:29,524 INFO L225 Difference]: With dead ends: 156 [2023-11-25 00:04:29,524 INFO L226 Difference]: Without dead ends: 112 [2023-11-25 00:04:29,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:04:29,526 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 3 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:29,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 550 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:04:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-25 00:04:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-25 00:04:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 59 states have (on average 1.11864406779661) internal successors, (66), 60 states have internal predecessors, (66), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-25 00:04:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2023-11-25 00:04:29,541 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 89 [2023-11-25 00:04:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:29,542 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2023-11-25 00:04:29,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-25 00:04:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2023-11-25 00:04:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-25 00:04:29,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:29,544 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:29,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:04:29,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:29,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash -781566868, now seen corresponding path program 1 times [2023-11-25 00:04:29,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:29,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045887484] [2023-11-25 00:04:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-25 00:04:30,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:30,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045887484] [2023-11-25 00:04:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045887484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:30,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-25 00:04:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808403518] [2023-11-25 00:04:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:30,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:04:30,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:04:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:04:30,713 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-25 00:04:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:30,938 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2023-11-25 00:04:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:04:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 93 [2023-11-25 00:04:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:30,941 INFO L225 Difference]: With dead ends: 154 [2023-11-25 00:04:30,941 INFO L226 Difference]: Without dead ends: 104 [2023-11-25 00:04:30,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:04:30,943 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:30,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 872 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:04:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-25 00:04:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-25 00:04:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 56 states have internal predecessors, (60), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-25 00:04:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2023-11-25 00:04:30,955 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 93 [2023-11-25 00:04:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:30,955 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2023-11-25 00:04:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-25 00:04:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2023-11-25 00:04:30,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-25 00:04:30,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:30,958 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:30,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:04:30,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:30,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash 494783669, now seen corresponding path program 1 times [2023-11-25 00:04:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052411933] [2023-11-25 00:04:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:30,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-25 00:04:41,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052411933] [2023-11-25 00:04:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052411933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:04:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208419928] [2023-11-25 00:04:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:41,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:41,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:41,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9561a6-52d8-4ea8-96c4-73a8002dc2d2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:04:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:42,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 108 conjunts are in the unsatisfiable core [2023-11-25 00:04:42,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:44,591 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 11 treesize of output 7 [2023-11-25 00:04:44,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2023-11-25 00:04:44,778 INFO L349 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2023-11-25 00:04:44,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 91 [2023-11-25 00:04:46,208 INFO L349 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2023-11-25 00:04:46,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 90 [2023-11-25 00:04:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-25 00:04:46,349 INFO L327 TraceCheckSpWp]: Computing backward predicates...