./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:24:09,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:24:09,928 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:24:09,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:24:09,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:24:09,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:24:09,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:24:09,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:24:09,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:24:09,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:24:09,992 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:24:09,992 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:24:09,993 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:24:09,994 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:24:09,995 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:24:09,995 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:24:09,996 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:24:09,996 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:24:09,996 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:24:09,997 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:24:09,997 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:24:09,998 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:24:09,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:24:10,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:24:10,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:24:10,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:24:10,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:24:10,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:24:10,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:24:10,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:24:10,004 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:24:10,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:24:10,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:24:10,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:24:10,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:10,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:24:10,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:24:10,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:24:10,006 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:24:10,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:24:10,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:24:10,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:24:10,008 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:24:10,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:24:10,009 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_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2023-11-23 21:24:10,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:24:10,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:24:10,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:24:10,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:24:10,306 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:24:10,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2023-11-23 21:24:13,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:24:14,068 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:24:14,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2023-11-23 21:24:14,127 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/data/9ed2cec7f/bd67270d06f84f8bba6f7478b41bc222/FLAG656212ac2 [2023-11-23 21:24:14,142 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/data/9ed2cec7f/bd67270d06f84f8bba6f7478b41bc222 [2023-11-23 21:24:14,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:24:14,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:24:14,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:14,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:24:14,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:24:14,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:14" (1/1) ... [2023-11-23 21:24:14,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4a3fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:14, skipping insertion in model container [2023-11-23 21:24:14,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:14" (1/1) ... [2023-11-23 21:24:14,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:24:14,634 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_042cb844-b71f-4cc8-96fb-ef46477db523/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2023-11-23 21:24:14,644 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_042cb844-b71f-4cc8-96fb-ef46477db523/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2023-11-23 21:24:15,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,842 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,860 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:15,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,299 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:24:16,301 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:24:16,302 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:24:16,304 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:24:16,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:24:16,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:24:16,308 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:24:16,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:24:16,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:24:16,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:24:16,683 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,683 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:16,806 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:24:16,826 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_042cb844-b71f-4cc8-96fb-ef46477db523/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2023-11-23 21:24:16,827 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_042cb844-b71f-4cc8-96fb-ef46477db523/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2023-11-23 21:24:16,887 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,904 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,911 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,916 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:16,989 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:24:16,990 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:24:16,991 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:24:16,992 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:24:16,993 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:24:16,994 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:24:16,994 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:24:16,997 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:24:16,998 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:24:16,999 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:24:17,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 21:24:17,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:17,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:24:17,144 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 21:24:17,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:17,444 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,444 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,444 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,445 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,445 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,445 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,445 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,446 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,446 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,447 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,447 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,447 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,447 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,448 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,448 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,448 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,449 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,449 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:17,457 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:24:17,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17 WrapperNode [2023-11-23 21:24:17,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:17,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:17,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:24:17,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:24:17,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,771 INFO L138 Inliner]: procedures = 690, calls = 2659, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 921 [2023-11-23 21:24:17,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:17,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:24:17,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:24:17,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:24:17,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,876 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:24:17,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:24:17,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:24:17,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:24:17,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (1/1) ... [2023-11-23 21:24:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:17,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:24:17,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:24:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 21:24:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 21:24:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2023-11-23 21:24:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2023-11-23 21:24:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:24:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:24:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:24:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:24:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:24:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2023-11-23 21:24:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2023-11-23 21:24:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:24:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:24:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:24:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:24:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 21:24:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 21:24:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:24:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:24:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:24:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:24:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:24:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 21:24:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 21:24:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:24:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:24:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:24:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:24:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:24:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:24:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:24:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:24:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-23 21:24:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-23 21:24:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:24:18,354 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:24:18,358 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:24:19,550 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:24:19,871 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:24:19,872 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:24:19,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:19 BoogieIcfgContainer [2023-11-23 21:24:19,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:24:19,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:24:19,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:24:19,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:24:19,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:24:14" (1/3) ... [2023-11-23 21:24:19,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a68d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:19, skipping insertion in model container [2023-11-23 21:24:19,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:17" (2/3) ... [2023-11-23 21:24:19,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a68d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:19, skipping insertion in model container [2023-11-23 21:24:19,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:19" (3/3) ... [2023-11-23 21:24:19,887 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2023-11-23 21:24:19,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:24:19,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:24:19,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:24:19,992 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;@9a98835, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:24:19,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:24:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 21:24:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:24:20,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:20,014 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:20,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:20,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1203588277, now seen corresponding path program 1 times [2023-11-23 21:24:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447036455] [2023-11-23 21:24:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 21:24:31,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447036455] [2023-11-23 21:24:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447036455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:24:31,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392437930] [2023-11-23 21:24:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:31,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:31,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:31,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:24:31,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:24:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:32,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-23 21:24:32,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:32,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:24:32,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 21:24:32,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 21:24:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 21:24:33,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:24:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392437930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:33,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:24:33,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2023-11-23 21:24:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317823502] [2023-11-23 21:24:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:24:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:24:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2023-11-23 21:24:33,411 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 21:24:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:37,009 INFO L93 Difference]: Finished difference Result 324 states and 470 transitions. [2023-11-23 21:24:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:24:37,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2023-11-23 21:24:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:37,036 INFO L225 Difference]: With dead ends: 324 [2023-11-23 21:24:37,036 INFO L226 Difference]: Without dead ends: 203 [2023-11-23 21:24:37,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:24:37,059 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 126 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:37,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1285 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 21:24:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-23 21:24:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2023-11-23 21:24:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 105 states have internal predecessors, (119), 78 states have call successors, (78), 18 states have call predecessors, (78), 19 states have return successors, (79), 77 states have call predecessors, (79), 76 states have call successors, (79) [2023-11-23 21:24:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 276 transitions. [2023-11-23 21:24:37,165 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 276 transitions. Word has length 82 [2023-11-23 21:24:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:37,165 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 276 transitions. [2023-11-23 21:24:37,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 21:24:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 276 transitions. [2023-11-23 21:24:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 21:24:37,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:37,180 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:37,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:24:37,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:24:37,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:37,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash 376043015, now seen corresponding path program 1 times [2023-11-23 21:24:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524226713] [2023-11-23 21:24:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 21:24:44,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524226713] [2023-11-23 21:24:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524226713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:24:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701034761] [2023-11-23 21:24:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:44,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:44,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:24:44,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042cb844-b71f-4cc8-96fb-ef46477db523/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:24:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:45,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 135 conjunts are in the unsatisfiable core [2023-11-23 21:24:45,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:45,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:24:45,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 21:24:45,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 21:24:46,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-11-23 21:24:46,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-11-23 21:24:46,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-11-23 21:24:47,016 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 21:24:47,026 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 16 treesize of output 11 [2023-11-23 21:24:47,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-11-23 21:24:47,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-11-23 21:24:47,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2023-11-23 21:24:47,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-11-23 21:24:53,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-11-23 21:24:53,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2023-11-23 21:24:53,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:24:53,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 96 [2023-11-23 21:24:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 58 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 21:24:54,001 INFO L327 TraceCheckSpWp]: Computing backward predicates...