./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.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_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/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_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/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_f657d9b7-27a0-4562-a18c-513f8d6a9415/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 df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:47,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:47,341 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:59:47,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:47,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:47,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:47,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:47,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:47,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:47,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:47,411 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:47,413 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:47,414 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:47,416 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:47,417 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:47,417 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:47,418 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:47,418 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:47,419 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:47,420 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:47,421 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:47,422 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:47,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:47,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:47,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:47,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:47,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:47,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:47,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:47,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:47,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:47,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:47,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:47,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:47,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:47,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:47,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:47,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:47,433 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:47,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:47,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:47,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:47,435 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:47,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:47,436 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_f657d9b7-27a0-4562-a18c-513f8d6a9415/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e [2023-11-24 23:59:47,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:47,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:47,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:47,860 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:47,860 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:47,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-24 23:59:51,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:51,790 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:51,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-24 23:59:51,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/data/b3b2ba544/dead13cd69e84323939a1444fae3b630/FLAG18bc3184a [2023-11-24 23:59:51,855 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/data/b3b2ba544/dead13cd69e84323939a1444fae3b630 [2023-11-24 23:59:51,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:51,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:51,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:51,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:51,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:51,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:51" (1/1) ... [2023-11-24 23:59:51,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0fb495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:51, skipping insertion in model container [2023-11-24 23:59:51,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:51" (1/1) ... [2023-11-24 23:59:52,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:52,452 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_f657d9b7-27a0-4562-a18c-513f8d6a9415/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-24 23:59:52,464 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_f657d9b7-27a0-4562-a18c-513f8d6a9415/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-24 23:59:53,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,945 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,946 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,947 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,964 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:53,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:54,577 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:59:54,579 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:59:54,581 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:59:54,583 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:59:54,585 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:59:54,586 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:59:54,587 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:59:54,588 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:59:54,594 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:59:54,595 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:59:55,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:55,197 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:55,212 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_f657d9b7-27a0-4562-a18c-513f8d6a9415/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-24 23:59:55,212 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_f657d9b7-27a0-4562-a18c-513f8d6a9415/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-24 23:59:55,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,246 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,295 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:59:55,296 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:59:55,297 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:59:55,308 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:59:55,309 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:59:55,309 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:59:55,310 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:59:55,310 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:59:55,311 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:59:55,311 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:59:55,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-24 23:59:55,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,437 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:55,460 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-24 23:59:55,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:55,751 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,751 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,751 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,752 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,753 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:55,762 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:55,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55 WrapperNode [2023-11-24 23:59:55,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:55,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:55,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:55,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:55,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:55,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,063 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1022 [2023-11-24 23:59:56,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:56,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:56,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:56,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:56,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:56,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:56,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:56,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:56,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (1/1) ... [2023-11-24 23:59:56,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:56,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:56,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:56,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-24 23:59:56,338 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-24 23:59:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-24 23:59:56,338 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-24 23:59:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2023-11-24 23:59:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:59:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:59:56,339 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:59:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:59:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:59:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:59:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:59:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:59:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:59:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:59:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:59:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:59:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2023-11-24 23:59:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2023-11-24 23:59:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:59:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:59:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:59:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-24 23:59:56,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-24 23:59:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:59:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:59:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-24 23:59:56,344 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-24 23:59:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:59:56,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:59:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:59:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:59:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:59:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:59:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:59:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:59:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-24 23:59:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:59:56,697 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:56,700 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:58,345 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:58,852 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:58,853 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:59:58,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:58 BoogieIcfgContainer [2023-11-24 23:59:58,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:58,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:58,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:58,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:58,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:51" (1/3) ... [2023-11-24 23:59:58,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d63cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:58, skipping insertion in model container [2023-11-24 23:59:58,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:55" (2/3) ... [2023-11-24 23:59:58,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d63cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:58, skipping insertion in model container [2023-11-24 23:59:58,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:58" (3/3) ... [2023-11-24 23:59:58,869 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness_negated.i [2023-11-24 23:59:58,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:58,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:59:58,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:58,981 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;@15fb8c74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:58,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:59:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-24 23:59:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-24 23:59:59,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:59,007 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:59:59,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:59,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash 87171955, now seen corresponding path program 1 times [2023-11-24 23:59:59,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:59,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97073412] [2023-11-24 23:59:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-25 00:00:01,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97073412] [2023-11-25 00:00:01,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97073412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:01,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:01,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:00:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789917954] [2023-11-25 00:00:01,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:01,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:01,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:01,753 INFO L87 Difference]: Start difference. First operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-25 00:00:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:02,638 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2023-11-25 00:00:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:02,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 82 [2023-11-25 00:00:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:02,657 INFO L225 Difference]: With dead ends: 221 [2023-11-25 00:00:02,660 INFO L226 Difference]: Without dead ends: 127 [2023-11-25 00:00:02,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:02,673 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 4 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:02,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 457 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:00:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-25 00:00:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-25 00:00:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 68 states have internal predecessors, (80), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-25 00:00:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2023-11-25 00:00:02,783 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 82 [2023-11-25 00:00:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:02,784 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2023-11-25 00:00:02,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-25 00:00:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2023-11-25 00:00:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-25 00:00:02,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:02,793 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:02,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:00:02,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:02,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -638960678, now seen corresponding path program 1 times [2023-11-25 00:00:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712245307] [2023-11-25 00:00:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-25 00:00:04,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:04,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712245307] [2023-11-25 00:00:04,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712245307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:04,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148050625] [2023-11-25 00:00:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:04,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:04,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:04,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:00:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:05,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:00:05,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-25 00:00:05,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-25 00:00:06,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148050625] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:06,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:00:06,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2023-11-25 00:00:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408496340] [2023-11-25 00:00:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:06,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:00:06,088 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-25 00:00:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:06,772 INFO L93 Difference]: Finished difference Result 226 states and 318 transitions. [2023-11-25 00:00:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 83 [2023-11-25 00:00:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:06,777 INFO L225 Difference]: With dead ends: 226 [2023-11-25 00:00:06,777 INFO L226 Difference]: Without dead ends: 132 [2023-11-25 00:00:06,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:00:06,781 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 4 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:06,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 303 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:00:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-25 00:00:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-25 00:00:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 70 states have internal predecessors, (83), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-25 00:00:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2023-11-25 00:00:06,803 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 83 [2023-11-25 00:00:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:06,804 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2023-11-25 00:00:06,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-25 00:00:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2023-11-25 00:00:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-25 00:00:06,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:06,809 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:06,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:07,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:07,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2041009557, now seen corresponding path program 1 times [2023-11-25 00:00:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:07,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809062701] [2023-11-25 00:00:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-25 00:00:09,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809062701] [2023-11-25 00:00:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809062701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093019424] [2023-11-25 00:00:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:09,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:09,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:09,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:09,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:00:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:10,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-25 00:00:10,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-25 00:00:10,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:10,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093019424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:00:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-11-25 00:00:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124483702] [2023-11-25 00:00:10,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:10,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:00:10,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:00:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:00:10,347 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-25 00:00:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:11,857 INFO L93 Difference]: Finished difference Result 247 states and 343 transitions. [2023-11-25 00:00:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:00:11,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 84 [2023-11-25 00:00:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:11,868 INFO L225 Difference]: With dead ends: 247 [2023-11-25 00:00:11,868 INFO L226 Difference]: Without dead ends: 130 [2023-11-25 00:00:11,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:00:11,871 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:11,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1018 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-25 00:00:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-25 00:00:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-25 00:00:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 70 states have internal predecessors, (82), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-25 00:00:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2023-11-25 00:00:11,889 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 84 [2023-11-25 00:00:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:11,889 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2023-11-25 00:00:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-25 00:00:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2023-11-25 00:00:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-25 00:00:11,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:11,892 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 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 00:00:11,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:12,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:12,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -385404948, now seen corresponding path program 1 times [2023-11-25 00:00:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:12,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765753533] [2023-11-25 00:00:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-25 00:00:14,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765753533] [2023-11-25 00:00:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765753533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667864231] [2023-11-25 00:00:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:14,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:14,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:14,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f657d9b7-27a0-4562-a18c-513f8d6a9415/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:00:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:15,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 157 conjunts are in the unsatisfiable core [2023-11-25 00:00:15,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:15,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-25 00:00:15,409 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-25 00:00:15,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-25 00:00:15,754 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 8 treesize of output 1 [2023-11-25 00:00:15,762 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 00:00:15,776 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 00:00:17,469 INFO L349 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2023-11-25 00:00:17,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 37 [2023-11-25 00:00:17,665 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-25 00:00:17,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-25 00:00:17,995 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 18 treesize of output 13 [2023-11-25 00:00:18,014 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-25 00:00:18,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-25 00:00:18,030 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-25 00:00:18,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-25 00:00:18,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-25 00:00:18,510 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-25 00:00:18,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-25 00:00:18,536 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-25 00:00:18,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-25 00:00:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-25 00:00:22,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:23,806 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 10832 disjunctions. This might take some time... [2023-11-25 00:00:34,811 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 10816 disjunctions.