./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 527bcce2 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_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/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_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5 --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 0.2.3-dev-527bcce [2023-11-21 19:49:19,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:49:19,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:49:19,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:49:19,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:49:19,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:49:19,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:49:19,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:49:19,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:49:19,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:49:19,796 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:49:19,796 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:49:19,797 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:49:19,798 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:49:19,798 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:49:19,799 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:49:19,800 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:49:19,800 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:49:19,801 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:49:19,802 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:49:19,802 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:49:19,803 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:49:19,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:49:19,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:49:19,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:49:19,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:49:19,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:49:19,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:49:19,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:49:19,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:49:19,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:49:19,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:49:19,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:49:19,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:49:19,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:19,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:49:19,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:49:19,813 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:49:19,813 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:49:19,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:49:19,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:49:19,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:49:19,815 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:49:19,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:49:19,816 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_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e [2023-11-21 19:49:20,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:49:20,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:49:20,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:49:20,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:49:20,158 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:49:20,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-21 19:49:23,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:49:24,621 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:49:24,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-21 19:49:24,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/data/471d9678d/01c11466293540d9bafbb54a503cabe2/FLAG0abfc5b08 [2023-11-21 19:49:24,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/data/471d9678d/01c11466293540d9bafbb54a503cabe2 [2023-11-21 19:49:24,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:49:24,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:49:24,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:24,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:49:24,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:49:24,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:24" (1/1) ... [2023-11-21 19:49:24,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20eee42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:24, skipping insertion in model container [2023-11-21 19:49:24,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:24" (1/1) ... [2023-11-21 19:49:24,874 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:49:25,266 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_c805d94c-fdcf-4da0-9719-c5188992baf4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-21 19:49:25,277 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_c805d94c-fdcf-4da0-9719-c5188992baf4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-21 19:49:26,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,805 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,806 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,808 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,832 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:26,836 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,336 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:49:27,338 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:49:27,339 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:49:27,340 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:49:27,342 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:49:27,343 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:49:27,344 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:49:27,345 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:49:27,346 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:49:27,347 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:49:27,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,720 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:27,849 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:49:27,863 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_c805d94c-fdcf-4da0-9719-c5188992baf4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-21 19:49:27,864 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_c805d94c-fdcf-4da0-9719-c5188992baf4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-21 19:49:27,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,920 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:27,970 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:49:27,970 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:49:27,971 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:49:27,972 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:49:27,976 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:49:27,977 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:49:27,977 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:49:27,978 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:49:27,978 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:49:27,979 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:49:28,110 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-21 19:49:28,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:28,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:49:28,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-21 19:49:28,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:28,455 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,455 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,456 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,456 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,456 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,487 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,487 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,487 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,488 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,489 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:28,498 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:49:28,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28 WrapperNode [2023-11-21 19:49:28,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:28,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:28,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:49:28,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:49:28,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,752 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1022 [2023-11-21 19:49:28,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:28,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:49:28,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:49:28,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:49:28,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:49:28,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:49:28,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:49:28,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:49:28,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (1/1) ... [2023-11-21 19:49:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:28,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:28,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:49:28,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:49:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-21 19:49:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-21 19:49:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-21 19:49:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-21 19:49:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2023-11-21 19:49:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:49:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 19:49:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 19:49:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-21 19:49:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:49:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:49:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:49:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-21 19:49:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-21 19:49:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:49:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:49:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:49:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2023-11-21 19:49:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2023-11-21 19:49:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:49:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:49:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:49:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:49:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 19:49:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 19:49:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-21 19:49:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-21 19:49:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:49:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:49:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 19:49:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 19:49:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:49:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:49:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:49:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:49:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:49:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 19:49:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 19:49:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:49:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-21 19:49:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:49:29,297 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:49:29,301 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:49:31,223 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:49:31,708 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:49:31,708 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:49:31,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:31 BoogieIcfgContainer [2023-11-21 19:49:31,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:49:31,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:49:31,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:49:31,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:49:31,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:49:24" (1/3) ... [2023-11-21 19:49:31,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700329e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:31, skipping insertion in model container [2023-11-21 19:49:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:28" (2/3) ... [2023-11-21 19:49:31,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700329e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:31, skipping insertion in model container [2023-11-21 19:49:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:31" (3/3) ... [2023-11-21 19:49:31,722 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness_negated.i [2023-11-21 19:49:31,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:49:31,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:49:31,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:49:31,819 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;@caca450, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:49:31,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:49:31,824 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) [2023-11-21 19:49:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-21 19:49:31,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:31,836 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] [2023-11-21 19:49:31,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:31,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 87171955, now seen corresponding path program 1 times [2023-11-21 19:49:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207290359] [2023-11-21 19:49:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-21 19:49:34,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:34,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207290359] [2023-11-21 19:49:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207290359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:34,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:34,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:34,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582238082] [2023-11-21 19:49:34,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:49:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:49:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:49:34,659 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) [2023-11-21 19:49:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:35,427 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2023-11-21 19:49:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:49:35,431 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 [2023-11-21 19:49:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:35,446 INFO L225 Difference]: With dead ends: 221 [2023-11-21 19:49:35,451 INFO L226 Difference]: Without dead ends: 127 [2023-11-21 19:49:35,457 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 [2023-11-21 19:49:35,467 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 4 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:35,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 457 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 19:49:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-21 19:49:35,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-21 19:49:35,543 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) [2023-11-21 19:49:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2023-11-21 19:49:35,559 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 82 [2023-11-21 19:49:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:35,561 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2023-11-21 19:49:35,562 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) [2023-11-21 19:49:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2023-11-21 19:49:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-21 19:49:35,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:35,568 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] [2023-11-21 19:49:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:49:35,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -638960678, now seen corresponding path program 1 times [2023-11-21 19:49:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131889012] [2023-11-21 19:49:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-21 19:49:37,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:37,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131889012] [2023-11-21 19:49:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131889012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060197393] [2023-11-21 19:49:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:37,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:37,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:37,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:37,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:49:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:38,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:49:38,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 19:49:38,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:49:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-21 19:49:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060197393] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:49:38,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2023-11-21 19:49:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209378605] [2023-11-21 19:49:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:49:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:49:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:49:38,632 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) [2023-11-21 19:49:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:39,047 INFO L93 Difference]: Finished difference Result 226 states and 318 transitions. [2023-11-21 19:49:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:49:39,048 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 [2023-11-21 19:49:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:39,054 INFO L225 Difference]: With dead ends: 226 [2023-11-21 19:49:39,054 INFO L226 Difference]: Without dead ends: 132 [2023-11-21 19:49:39,057 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 [2023-11-21 19:49:39,060 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 4 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:39,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 303 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:49:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-21 19:49:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-21 19:49:39,093 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) [2023-11-21 19:49:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2023-11-21 19:49:39,100 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 83 [2023-11-21 19:49:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:39,101 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2023-11-21 19:49:39,101 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) [2023-11-21 19:49:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2023-11-21 19:49:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-21 19:49:39,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:39,112 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] [2023-11-21 19:49:39,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:39,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:39,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:39,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2041009557, now seen corresponding path program 1 times [2023-11-21 19:49:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:39,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892913807] [2023-11-21 19:49:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-21 19:49:41,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892913807] [2023-11-21 19:49:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892913807] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327162243] [2023-11-21 19:49:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:41,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:41,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:41,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:49:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:42,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-21 19:49:42,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 19:49:42,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:49:42,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327162243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:42,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:49:42,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2023-11-21 19:49:42,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086432506] [2023-11-21 19:49:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:42,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 19:49:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 19:49:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:49:42,585 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-21 19:49:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:45,076 INFO L93 Difference]: Finished difference Result 249 states and 346 transitions. [2023-11-21 19:49:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:49:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 84 [2023-11-21 19:49:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:45,080 INFO L225 Difference]: With dead ends: 249 [2023-11-21 19:49:45,080 INFO L226 Difference]: Without dead ends: 132 [2023-11-21 19:49:45,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:49:45,082 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:45,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1401 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-21 19:49:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-21 19:49:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-21 19:49:45,098 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) [2023-11-21 19:49:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2023-11-21 19:49:45,100 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 84 [2023-11-21 19:49:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:45,101 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2023-11-21 19:49:45,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-21 19:49:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2023-11-21 19:49:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-21 19:49:45,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:45,103 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] [2023-11-21 19:49:45,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:49:45,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:45,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:45,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -385404948, now seen corresponding path program 1 times [2023-11-21 19:49:45,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:45,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792288410] [2023-11-21 19:49:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-21 19:49:47,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792288410] [2023-11-21 19:49:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792288410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251574038] [2023-11-21 19:49:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:47,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:47,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:47,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c805d94c-fdcf-4da0-9719-c5188992baf4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:49:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:48,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 175 conjunts are in the unsatisfiable core [2023-11-21 19:49:48,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:48,528 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 [2023-11-21 19:49:48,708 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-21 19:49:48,709 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 [2023-11-21 19:49:49,061 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 [2023-11-21 19:49:49,068 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 [2023-11-21 19:49:49,081 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 [2023-11-21 19:49:50,709 INFO L349 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2023-11-21 19:49:50,711 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 [2023-11-21 19:49:50,924 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-21 19:49:50,924 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 [2023-11-21 19:49:51,288 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 [2023-11-21 19:49:51,302 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 19:49:51,303 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 [2023-11-21 19:49:51,316 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 19:49:51,316 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 [2023-11-21 19:49:51,757 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 [2023-11-21 19:49:51,773 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 19:49:51,774 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 [2023-11-21 19:49:51,796 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-21 19:49:51,797 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 [2023-11-21 19:49:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 57 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 19:49:56,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:49:57,961 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 10832 disjunctions. This might take some time... [2023-11-21 19:50:06,780 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 10816 disjunctions.