./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash be41ee8ace02416f2e9952c11df8cb43e10a04c126211792ad12271f5624b8e0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:07:01,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:07:01,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:07:01,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:07:01,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:07:01,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:07:01,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:07:01,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:07:01,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:07:01,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:07:01,992 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:07:01,993 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:07:01,993 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:07:01,995 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:07:01,996 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:07:01,996 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:07:01,997 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:07:01,997 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:07:01,997 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:07:01,998 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:07:01,998 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:07:01,999 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:07:02,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:07:02,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:07:02,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:07:02,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:07:02,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:07:02,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:07:02,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:07:02,004 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:07:02,005 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:07:02,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:07:02,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:07:02,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:07:02,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:02,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:07:02,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:07:02,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:07:02,007 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:07:02,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:07:02,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:07:02,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:07:02,008 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:07:02,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:07:02,009 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_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be41ee8ace02416f2e9952c11df8cb43e10a04c126211792ad12271f5624b8e0 [2023-11-25 00:07:02,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:07:02,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:07:02,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:07:02,364 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:07:02,365 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:07:02,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2023-11-25 00:07:05,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:07:06,123 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:07:06,124 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2023-11-25 00:07:06,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/data/c1d207a66/4754ef41fc404a0f969ebb9b040c5e39/FLAG8e33a0b7d [2023-11-25 00:07:06,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/data/c1d207a66/4754ef41fc404a0f969ebb9b040c5e39 [2023-11-25 00:07:06,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:07:06,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:07:06,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:06,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:07:06,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:07:06,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:06" (1/1) ... [2023-11-25 00:07:06,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4bdf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:06, skipping insertion in model container [2023-11-25 00:07:06,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:06" (1/1) ... [2023-11-25 00:07:06,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:06,546 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_b5fe748e-59fd-4c53-b14b-6e1745619048/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4490,4503] [2023-11-25 00:07:06,554 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_b5fe748e-59fd-4c53-b14b-6e1745619048/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4550,4563] [2023-11-25 00:07:07,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,551 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,552 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,553 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,555 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:07,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,105 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:07:08,109 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:07:08,111 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:07:08,116 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:07:08,119 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:07:08,120 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:07:08,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:07:08,123 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:07:08,124 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:07:08,125 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:07:08,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:08,397 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:07:08,424 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_b5fe748e-59fd-4c53-b14b-6e1745619048/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4490,4503] [2023-11-25 00:07:08,424 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_b5fe748e-59fd-4c53-b14b-6e1745619048/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4550,4563] [2023-11-25 00:07:08,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,569 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,571 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,638 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,638 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,638 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:07:08,710 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:07:08,712 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:07:08,712 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:07:08,713 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:07:08,717 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:07:08,718 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:07:08,719 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:07:08,720 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:07:08,720 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:07:08,721 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:07:08,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:08,930 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,930 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,930 WARN L675 CHandler]: The function aws_last_error is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,930 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,931 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,932 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,932 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,932 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,932 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,932 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:08,939 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:07:08,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08 WrapperNode [2023-11-25 00:07:08,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:08,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:08,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:07:08,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:07:08,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,075 INFO L138 Inliner]: procedures = 678, calls = 973, calls flagged for inlining = 44, calls inlined = 6, statements flattened = 58 [2023-11-25 00:07:09,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:09,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:07:09,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:07:09,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:07:09,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:07:09,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:07:09,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:07:09,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:07:09,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (1/1) ... [2023-11-25 00:07:09,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:09,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:07:09,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:07:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-25 00:07:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-25 00:07:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:07:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:07:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:07:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:07:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:07:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:07:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:07:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:07:09,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:07:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:07:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:07:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:07:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-25 00:07:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-25 00:07:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:07:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:07:09,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:07:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:07:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:07:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:07:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:07:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:07:09,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:07:09,551 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:07:09,553 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:07:09,730 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:07:09,819 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:07:09,820 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:07:09,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:09 BoogieIcfgContainer [2023-11-25 00:07:09,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:07:09,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:07:09,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:07:09,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:07:09,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:07:06" (1/3) ... [2023-11-25 00:07:09,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bad2f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:09, skipping insertion in model container [2023-11-25 00:07:09,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:08" (2/3) ... [2023-11-25 00:07:09,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bad2f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:09, skipping insertion in model container [2023-11-25 00:07:09,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:09" (3/3) ... [2023-11-25 00:07:09,831 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_bytes_harness.i [2023-11-25 00:07:09,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:07:09,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:07:09,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:07:09,907 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;@6d2ba06a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:07:09,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:07:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-25 00:07:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-25 00:07:09,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:09,922 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-25 00:07:09,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:07:09,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1801210406, now seen corresponding path program 1 times [2023-11-25 00:07:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:09,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731582560] [2023-11-25 00:07:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:09,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-25 00:07:11,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:11,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731582560] [2023-11-25 00:07:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731582560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:11,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-25 00:07:11,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616064062] [2023-11-25 00:07:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:11,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:07:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:07:11,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:07:11,642 INFO L87 Difference]: Start difference. First operand has 44 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 11 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-25 00:07:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:11,989 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2023-11-25 00:07:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-25 00:07:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 36 [2023-11-25 00:07:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:12,002 INFO L225 Difference]: With dead ends: 61 [2023-11-25 00:07:12,002 INFO L226 Difference]: Without dead ends: 44 [2023-11-25 00:07:12,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:07:12,010 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:12,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 306 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:07:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-25 00:07:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-25 00:07:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-25 00:07:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-11-25 00:07:12,060 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 36 [2023-11-25 00:07:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:12,062 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-11-25 00:07:12,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-25 00:07:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-11-25 00:07:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-25 00:07:12,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:12,066 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-25 00:07:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:07:12,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:07:12,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash -857326607, now seen corresponding path program 1 times [2023-11-25 00:07:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:12,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210857735] [2023-11-25 00:07:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:12,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-25 00:07:16,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210857735] [2023-11-25 00:07:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210857735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:07:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037939628] [2023-11-25 00:07:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:16,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:16,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:07:16,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fe748e-59fd-4c53-b14b-6e1745619048/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:07:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:16,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 91 conjunts are in the unsatisfiable core [2023-11-25 00:07:16,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:17,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-25 00:07:22,156 INFO L349 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2023-11-25 00:07:22,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 228 treesize of output 188 [2023-11-25 00:07:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-25 00:07:23,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:07:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-25 00:07:31,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037939628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:07:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34508187] [2023-11-25 00:07:31,186 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-25 00:07:31,186 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:07:31,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:07:31,198 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:07:31,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:07:33,453 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 213 for LOIs [2023-11-25 00:07:35,557 INFO L197 IcfgInterpreter]: Interpreting procedure aws_string_bytes with input of size 122 for LOIs [2023-11-25 00:07:35,988 INFO L197 IcfgInterpreter]: Interpreting procedure aws_string_is_valid with input of size 130 for LOIs [2023-11-25 00:07:36,059 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 10 for LOIs [2023-11-25 00:07:36,060 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 78 for LOIs [2023-11-25 00:07:36,069 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 117 for LOIs [2023-11-25 00:07:36,588 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 10 for LOIs [2023-11-25 00:07:36,590 INFO L180 IcfgInterpreter]: Interpretation finished