./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/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 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:30,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:31,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:18:31,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:31,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:31,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:31,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:31,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:31,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:31,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:31,188 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:31,189 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:31,190 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:31,192 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:31,192 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:31,193 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:31,193 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:31,194 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:31,194 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:31,195 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:31,195 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:31,196 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:31,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:31,198 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:31,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:31,199 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:31,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:31,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:31,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:31,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:31,202 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:31,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:31,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:31,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:31,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:31,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:31,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:31,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:31,221 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:31,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:31,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:31,222 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:31,222 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:31,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:31,223 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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e [2023-11-23 21:18:31,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:31,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:31,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:31,566 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:31,567 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:31,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2023-11-23 21:18:34,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:35,387 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:35,387 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2023-11-23 21:18:35,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/data/cfadf99d1/0fdf8b68bf9f47f4b838d8f9d4776132/FLAG2cb1b4571 [2023-11-23 21:18:35,459 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/data/cfadf99d1/0fdf8b68bf9f47f4b838d8f9d4776132 [2023-11-23 21:18:35,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:35,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:35,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:35,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:35,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:35,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:35" (1/1) ... [2023-11-23 21:18:35,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318cc8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:35, skipping insertion in model container [2023-11-23 21:18:35,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:35" (1/1) ... [2023-11-23 21:18:35,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:35,947 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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2023-11-23 21:18:35,958 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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2023-11-23 21:18:37,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,418 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,419 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,420 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,447 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,448 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:37,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,061 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:18:38,063 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:18:38,064 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:18:38,066 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:18:38,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:18:38,069 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:18:38,070 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:18:38,071 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:18:38,071 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:18:38,073 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:18:38,506 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,516 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:38,645 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:38,660 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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2023-11-23 21:18:38,660 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_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2023-11-23 21:18:38,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,707 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,707 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,734 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,736 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,740 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:18:38,795 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:18:38,796 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:18:38,797 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:18:38,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:18:38,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:18:38,802 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:18:38,803 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:18:38,803 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:18:38,804 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:18:38,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 21:18:38,931 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,933 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:18:38,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 21:18:38,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:39,242 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,243 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,243 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,243 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,243 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,243 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,243 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,244 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,244 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,244 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,244 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,244 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,245 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,245 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,245 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,245 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,245 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,245 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:39,254 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:39,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39 WrapperNode [2023-11-23 21:18:39,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:39,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:39,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:39,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:39,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,533 INFO L138 Inliner]: procedures = 690, calls = 2618, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 803 [2023-11-23 21:18:39,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:39,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:39,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:39,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:39,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:39,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:39,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:39,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:39,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:39,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:39,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2023-11-23 21:18:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2023-11-23 21:18:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:18:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:18:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:18:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:18:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:18:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:18:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 21:18:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 21:18:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:18:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:18:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 21:18:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 21:18:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 21:18:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 21:18:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:18:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:18:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:18:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:18:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:18:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:18:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:40,088 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:40,091 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:41,417 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:41,597 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:41,598 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:41,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:41 BoogieIcfgContainer [2023-11-23 21:18:41,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:41,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:41,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:41,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:41,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:35" (1/3) ... [2023-11-23 21:18:41,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e91ae76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:41, skipping insertion in model container [2023-11-23 21:18:41,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39" (2/3) ... [2023-11-23 21:18:41,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e91ae76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:41, skipping insertion in model container [2023-11-23 21:18:41,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:41" (3/3) ... [2023-11-23 21:18:41,614 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness.i [2023-11-23 21:18:41,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:41,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:41,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:41,715 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;@8c77253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:41,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 48 states have internal predecessors, (59), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 21:18:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:18:41,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:41,734 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:41,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:41,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1390205959, now seen corresponding path program 1 times [2023-11-23 21:18:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:41,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937284681] [2023-11-23 21:18:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:41,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:18:43,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937284681] [2023-11-23 21:18:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937284681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:18:43,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275409955] [2023-11-23 21:18:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:43,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:43,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:43,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:18:44,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:18:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:44,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 21:18:44,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:18:44,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:18:44,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275409955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:44,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:18:44,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 8 [2023-11-23 21:18:44,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285076493] [2023-11-23 21:18:44,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:44,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:18:44,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:44,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:18:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:18:44,953 INFO L87 Difference]: Start difference. First operand has 82 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 48 states have internal predecessors, (59), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:18:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:45,310 INFO L93 Difference]: Finished difference Result 132 states and 186 transitions. [2023-11-23 21:18:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:18:45,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 52 [2023-11-23 21:18:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:45,325 INFO L225 Difference]: With dead ends: 132 [2023-11-23 21:18:45,326 INFO L226 Difference]: Without dead ends: 80 [2023-11-23 21:18:45,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:18:45,344 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 13 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:45,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 484 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:18:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-23 21:18:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-23 21:18:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:18:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2023-11-23 21:18:45,408 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 52 [2023-11-23 21:18:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:45,410 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2023-11-23 21:18:45,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:18:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2023-11-23 21:18:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-23 21:18:45,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:45,414 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:45,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:18:45,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:18:45,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:45,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:45,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1462996124, now seen corresponding path program 1 times [2023-11-23 21:18:45,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:45,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540779195] [2023-11-23 21:18:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 21:18:49,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540779195] [2023-11-23 21:18:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540779195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:18:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59906621] [2023-11-23 21:18:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:49,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:49,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:18:49,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_404b66a5-4cc8-49bc-bf15-b2c7fb8d48d3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:18:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:50,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 21:18:50,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:18:51,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:18:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 21:18:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59906621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:18:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [722085776] [2023-11-23 21:18:53,280 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2023-11-23 21:18:53,280 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:18:53,284 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:18:53,289 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:18:53,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs