./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:50,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:50,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:05:50,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:50,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:50,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:50,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:50,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:50,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:50,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:50,600 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:50,601 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:50,602 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:50,604 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:50,605 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:50,605 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:50,606 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:50,607 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:50,607 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:50,608 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:50,608 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:50,611 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:50,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:50,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:05:50,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:50,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:50,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:05:50,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:50,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:05:50,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:05:50,618 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:50,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:50,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:50,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:50,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:50,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:50,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:50,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:05:50,622 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:50,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:50,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:50,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:05:50,623 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:50,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:50,625 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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2023-11-25 00:05:51,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:51,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:51,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:51,068 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:51,069 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:51,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2023-11-25 00:05:54,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:55,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:55,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2023-11-25 00:05:55,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/data/a1116ac10/a555a280b2514fcd92c84e16c4efdf5a/FLAG27a785238 [2023-11-25 00:05:55,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/data/a1116ac10/a555a280b2514fcd92c84e16c4efdf5a [2023-11-25 00:05:55,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:55,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:55,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:55,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:55,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:55,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:55" (1/1) ... [2023-11-25 00:05:55,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbf0609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:55, skipping insertion in model container [2023-11-25 00:05:55,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:55" (1/1) ... [2023-11-25 00:05:55,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:56,053 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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2023-11-25 00:05:56,063 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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2023-11-25 00:05:57,402 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,404 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,407 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,431 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:57,432 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,095 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:58,097 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:58,099 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:58,101 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:58,103 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:58,104 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:58,105 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:58,106 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:58,108 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:58,109 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:58,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:58,777 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:58,797 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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2023-11-25 00:05:58,797 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_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2023-11-25 00:05:58,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:58,919 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:05:58,921 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:05:58,922 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:05:58,924 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:05:58,925 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:05:58,926 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:05:58,927 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:05:58,928 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:05:58,929 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:05:58,930 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:05:59,045 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-25 00:05:59,047 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:59,048 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:05:59,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-25 00:05:59,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:59,450 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,451 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,452 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,452 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,453 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,453 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,454 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,454 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,454 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,455 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,455 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,455 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,455 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,456 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,456 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,457 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,457 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,457 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:05:59,466 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:59,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59 WrapperNode [2023-11-25 00:05:59,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:59,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:59,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:59,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:59,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,699 INFO L138 Inliner]: procedures = 690, calls = 2659, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 921 [2023-11-25 00:05:59,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:59,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:59,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:59,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:59,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:59,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:59,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:59,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:59,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (1/1) ... [2023-11-25 00:05:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:59,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:59,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:59,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-25 00:05:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-25 00:05:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2023-11-25 00:05:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2023-11-25 00:05:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-25 00:05:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:05:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:05:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:05:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:05:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2023-11-25 00:05:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2023-11-25 00:05:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:05:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:05:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:05:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-25 00:05:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-25 00:05:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:05:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:05:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:05:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-25 00:05:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-25 00:05:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:05:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:05:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:05:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:05:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:05:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:05:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:05:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:05:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-25 00:05:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-25 00:05:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:06:00,227 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:00,230 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:01,941 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:02,281 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:02,281 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:06:02,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:02 BoogieIcfgContainer [2023-11-25 00:06:02,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:02,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:02,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:02,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:02,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:55" (1/3) ... [2023-11-25 00:06:02,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29818074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:02, skipping insertion in model container [2023-11-25 00:06:02,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:59" (2/3) ... [2023-11-25 00:06:02,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29818074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:02, skipping insertion in model container [2023-11-25 00:06:02,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:02" (3/3) ... [2023-11-25 00:06:02,298 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2023-11-25 00:06:02,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:02,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:02,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:02,408 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;@3ea338da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:02,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-25 00:06:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-25 00:06:02,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:02,432 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:02,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:02,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1203588277, now seen corresponding path program 1 times [2023-11-25 00:06:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:02,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465057483] [2023-11-25 00:06:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:02,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-25 00:06:14,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465057483] [2023-11-25 00:06:14,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465057483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299501633] [2023-11-25 00:06:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:14,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:14,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:14,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:14,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:06:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:15,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-25 00:06:15,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:15,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-25 00:06:15,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-25 00:06:15,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-25 00:06:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-25 00:06:16,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299501633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:06:16,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2023-11-25 00:06:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743488064] [2023-11-25 00:06:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-25 00:06:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-25 00:06:16,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2023-11-25 00:06:16,854 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-25 00:06:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:20,218 INFO L93 Difference]: Finished difference Result 324 states and 470 transitions. [2023-11-25 00:06:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-25 00:06:20,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2023-11-25 00:06:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:20,234 INFO L225 Difference]: With dead ends: 324 [2023-11-25 00:06:20,234 INFO L226 Difference]: Without dead ends: 203 [2023-11-25 00:06:20,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-11-25 00:06:20,243 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 126 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:20,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1285 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-25 00:06:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-25 00:06:20,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2023-11-25 00:06:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 105 states have internal predecessors, (119), 78 states have call successors, (78), 18 states have call predecessors, (78), 19 states have return successors, (79), 77 states have call predecessors, (79), 76 states have call successors, (79) [2023-11-25 00:06:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 276 transitions. [2023-11-25 00:06:20,331 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 276 transitions. Word has length 82 [2023-11-25 00:06:20,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:20,331 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 276 transitions. [2023-11-25 00:06:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-25 00:06:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 276 transitions. [2023-11-25 00:06:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-25 00:06:20,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:20,338 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:20,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:20,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:06:20,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:20,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:20,551 INFO L85 PathProgramCache]: Analyzing trace with hash 376043015, now seen corresponding path program 1 times [2023-11-25 00:06:20,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:20,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652255460] [2023-11-25 00:06:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-25 00:06:28,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:28,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652255460] [2023-11-25 00:06:28,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652255460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:28,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872336399] [2023-11-25 00:06:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:28,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:28,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:28,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:28,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e2e2fa-1d2f-4e38-8f5e-be81fb440a2d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:06:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:28,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 104 conjunts are in the unsatisfiable core [2023-11-25 00:06:28,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:28,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-25 00:06:29,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-25 00:06:29,160 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 19 treesize of output 1 [2023-11-25 00:06:31,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-11-25 00:06:31,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 22 treesize of output 14 [2023-11-25 00:06:31,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-11-25 00:06:31,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-11-25 00:06:31,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 20 treesize of output 8