./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/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 19d158b21d92d4655e874a970c31120f676a50dd3149e2b62ecc8e8738919e4f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:47,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:47,933 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:21:47,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:47,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:47,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:47,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:47,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:47,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:47,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:47,971 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:47,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:47,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:47,973 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:47,973 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:47,974 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:47,975 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:47,975 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:47,976 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:47,976 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:47,977 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:47,978 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:47,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:47,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:47,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:47,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:47,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:47,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:47,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:47,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:47,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:47,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:47,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:47,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:47,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:47,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:47,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:47,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:47,987 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:47,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:47,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:47,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:47,989 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:47,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:47,989 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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19d158b21d92d4655e874a970c31120f676a50dd3149e2b62ecc8e8738919e4f [2023-11-23 21:21:48,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:48,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:48,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:48,268 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:48,268 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:48,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i [2023-11-23 21:21:51,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:52,104 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:52,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i [2023-11-23 21:21:52,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/data/28043f9e9/47411ca9beb342e98ee4083a446645e3/FLAGbcab8a9ec [2023-11-23 21:21:52,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/data/28043f9e9/47411ca9beb342e98ee4083a446645e3 [2023-11-23 21:21:52,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:52,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:52,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:52,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:52,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:52,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:52" (1/1) ... [2023-11-23 21:21:52,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3686f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:52, skipping insertion in model container [2023-11-23 21:21:52,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:52" (1/1) ... [2023-11-23 21:21:52,397 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:52,757 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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4490,4503] [2023-11-23 21:21:52,768 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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4550,4563] [2023-11-23 21:21:54,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,232 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,233 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,249 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:54,774 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:21:54,776 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:21:54,777 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:21:54,778 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:21:54,781 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:21:54,782 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:21:54,783 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:21:54,784 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:21:54,785 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:21:54,786 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:21:55,127 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:55,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:55,331 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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4490,4503] [2023-11-23 21:21:55,331 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_b8b6e494-d45f-4323-8ff8-06adeeaf1405/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4550,4563] [2023-11-23 21:21:55,388 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,390 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,473 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:21:55,474 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:21:55,475 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:21:55,479 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:21:55,480 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:21:55,481 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:21:55,481 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:21:55,482 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:21:55,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:21:55,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:21:55,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 21:21:55,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:21:55,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 21:21:55,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:55,873 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,874 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,874 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,874 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,875 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,876 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,876 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,876 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,876 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,876 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,876 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:55,884 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:55,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55 WrapperNode [2023-11-23 21:21:55,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:55,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:55,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:55,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:55,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,125 INFO L138 Inliner]: procedures = 690, calls = 2731, calls flagged for inlining = 59, calls inlined = 8, statements flattened = 1083 [2023-11-23 21:21:56,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:56,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:56,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:56,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:56,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:56,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:56,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:56,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:56,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (1/1) ... [2023-11-23 21:21:56,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:56,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:56,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:56,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 21:21:56,397 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 21:21:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 21:21:56,397 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 21:21:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:21:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:21:56,398 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:21:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:21:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:21:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:21:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:21:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:21:56,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:21:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:21:56,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:21:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:21:56,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:21:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:21:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 21:21:56,401 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 21:21:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:21:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 21:21:56,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 21:21:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:56,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:21:56,404 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:21:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 21:21:56,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 21:21:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:21:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:21:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:21:56,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:21:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:21:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:21:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:21:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:21:56,407 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:21:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 21:21:56,407 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 21:21:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:21:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 21:21:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 21:21:56,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 21:21:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:21:56,843 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:56,846 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:21:58,318 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:21:58,757 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:21:58,758 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:21:58,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:58 BoogieIcfgContainer [2023-11-23 21:21:58,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:21:58,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:21:58,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:21:58,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:21:58,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:52" (1/3) ... [2023-11-23 21:21:58,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343683e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:58, skipping insertion in model container [2023-11-23 21:21:58,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:55" (2/3) ... [2023-11-23 21:21:58,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343683e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:58, skipping insertion in model container [2023-11-23 21:21:58,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:58" (3/3) ... [2023-11-23 21:21:58,774 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_cat_harness.i [2023-11-23 21:21:58,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:21:58,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:21:58,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:21:58,880 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;@44838973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:21:58,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:21:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 80 states have internal predecessors, (93), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-23 21:21:58,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 21:21:58,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:58,909 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:58,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:58,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1288502317, now seen corresponding path program 1 times [2023-11-23 21:21:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:58,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147336635] [2023-11-23 21:21:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-23 21:22:02,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:02,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147336635] [2023-11-23 21:22:02,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147336635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:02,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:22:02,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905920719] [2023-11-23 21:22:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:22:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:22:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:02,599 INFO L87 Difference]: Start difference. First operand has 167 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 80 states have internal predecessors, (93), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 21:22:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:03,973 INFO L93 Difference]: Finished difference Result 313 states and 486 transitions. [2023-11-23 21:22:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 153 [2023-11-23 21:22:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:03,990 INFO L225 Difference]: With dead ends: 313 [2023-11-23 21:22:03,990 INFO L226 Difference]: Without dead ends: 206 [2023-11-23 21:22:03,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:22:03,999 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 120 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:04,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 526 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:22:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-23 21:22:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 166. [2023-11-23 21:22:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 80 states have internal predecessors, (92), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-23 21:22:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2023-11-23 21:22:04,099 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 153 [2023-11-23 21:22:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:04,102 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2023-11-23 21:22:04,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 21:22:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2023-11-23 21:22:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 21:22:04,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:04,117 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:04,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:04,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:04,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1986659478, now seen corresponding path program 1 times [2023-11-23 21:22:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473210494] [2023-11-23 21:22:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 21:22:28,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473210494] [2023-11-23 21:22:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473210494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772087114] [2023-11-23 21:22:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:28,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:28,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:28,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8b6e494-d45f-4323-8ff8-06adeeaf1405/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:30,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 127 conjunts are in the unsatisfiable core [2023-11-23 21:22:30,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:30,377 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-23 21:22:30,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-11-23 21:22:30,893 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