./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/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 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:04,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:04,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:09:04,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:04,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:04,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:04,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:04,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:04,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:04,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:04,625 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:04,626 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:04,627 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:04,629 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:04,630 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:04,630 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:04,631 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:04,631 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:04,632 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:04,632 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:04,633 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:04,633 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:04,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:04,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:04,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:04,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:04,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:04,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:04,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:04,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:04,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:04,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:04,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:04,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:04,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:04,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:04,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:04,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:04,643 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:04,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:04,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:04,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:04,644 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:04,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:04,645 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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa [2023-11-23 21:09:05,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:05,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:05,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:05,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:05,038 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:05,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2023-11-23 21:09:08,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:08,758 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:08,758 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2023-11-23 21:09:08,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/data/bfc8d708b/c94b155a0fc643b0b2aa99631793e180/FLAGe12d57154 [2023-11-23 21:09:08,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/data/bfc8d708b/c94b155a0fc643b0b2aa99631793e180 [2023-11-23 21:09:08,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:08,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:08,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:08,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:08,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:08,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:08" (1/1) ... [2023-11-23 21:09:08,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d11ae2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:08, skipping insertion in model container [2023-11-23 21:09:08,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:08" (1/1) ... [2023-11-23 21:09:08,981 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:09,239 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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2023-11-23 21:09:09,248 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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2023-11-23 21:09:10,539 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,550 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,552 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,571 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,572 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:10,575 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:11,243 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:09:11,245 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:09:11,247 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:09:11,248 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:09:11,251 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:09:11,252 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:09:11,253 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:09:11,254 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:09:11,255 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:09:11,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:09:11,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:11,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:11,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:12,028 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:12,058 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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2023-11-23 21:09:12,059 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_b8a773bf-4e4d-464d-9769-8a2e06fc9646/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2023-11-23 21:09:12,120 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,120 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,175 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:09:12,177 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:09:12,178 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:09:12,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:09:12,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:09:12,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:09:12,181 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:09:12,182 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:09:12,182 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:09:12,183 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:09:12,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-23 21:09:12,272 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:09:12,289 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-23 21:09:12,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:12,578 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,578 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,579 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,579 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,580 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,581 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,581 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,581 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,581 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,582 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,583 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,583 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,583 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,584 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,584 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,584 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,584 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,585 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:12,593 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:12,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12 WrapperNode [2023-11-23 21:09:12,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:12,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:12,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:12,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:12,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,798 INFO L138 Inliner]: procedures = 689, calls = 2740, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 792 [2023-11-23 21:09:12,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:12,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:12,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:12,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:12,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:12,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:12,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:12,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:12,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:12,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:12,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:12,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 21:09:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 21:09:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:09:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:09:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:09:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:09:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 21:09:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 21:09:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:09:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:09:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:09:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:09:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:09:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:09:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:09:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:09:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:09:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:09:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:09:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:09:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:09:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 21:09:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 21:09:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:09:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:09:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 21:09:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 21:09:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:09:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:09:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 21:09:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 21:09:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:09:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 21:09:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 21:09:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:09:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2023-11-23 21:09:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2023-11-23 21:09:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:09:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:09:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 21:09:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 21:09:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:09:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:09:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:09:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 21:09:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:13,369 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:13,373 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:13,648 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-23 21:09:14,655 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:14,882 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:14,882 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:09:14,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:14 BoogieIcfgContainer [2023-11-23 21:09:14,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:14,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:14,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:14,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:08" (1/3) ... [2023-11-23 21:09:14,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f65b912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:14, skipping insertion in model container [2023-11-23 21:09:14,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (2/3) ... [2023-11-23 21:09:14,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f65b912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:14, skipping insertion in model container [2023-11-23 21:09:14,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:14" (3/3) ... [2023-11-23 21:09:14,897 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_array_harness.i [2023-11-23 21:09:14,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:14,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:14,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:14,993 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;@7b62279f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:14,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 21:09:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 21:09:15,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:15,009 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:15,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:15,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1946586981, now seen corresponding path program 1 times [2023-11-23 21:09:15,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425817551] [2023-11-23 21:09:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:15,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:09:16,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:16,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425817551] [2023-11-23 21:09:16,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425817551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:16,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:16,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:09:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809220729] [2023-11-23 21:09:16,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:09:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:09:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:16,136 INFO L87 Difference]: Start difference. First operand has 109 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:09:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:16,384 INFO L93 Difference]: Finished difference Result 148 states and 188 transitions. [2023-11-23 21:09:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:09:16,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 54 [2023-11-23 21:09:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:16,398 INFO L225 Difference]: With dead ends: 148 [2023-11-23 21:09:16,398 INFO L226 Difference]: Without dead ends: 110 [2023-11-23 21:09:16,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:09:16,411 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:16,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 460 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:09:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-23 21:09:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-23 21:09:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 59 states have (on average 1.152542372881356) internal successors, (68), 60 states have internal predecessors, (68), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-23 21:09:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2023-11-23 21:09:16,481 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 54 [2023-11-23 21:09:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:16,483 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2023-11-23 21:09:16,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:09:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2023-11-23 21:09:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:09:16,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:16,487 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:16,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:16,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:16,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -585616692, now seen corresponding path program 1 times [2023-11-23 21:09:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:16,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872852674] [2023-11-23 21:09:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:09:17,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872852674] [2023-11-23 21:09:17,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872852674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:17,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:17,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:09:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26072308] [2023-11-23 21:09:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:09:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:09:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:17,296 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 21:09:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:17,465 INFO L93 Difference]: Finished difference Result 141 states and 169 transitions. [2023-11-23 21:09:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:09:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 58 [2023-11-23 21:09:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:17,472 INFO L225 Difference]: With dead ends: 141 [2023-11-23 21:09:17,472 INFO L226 Difference]: Without dead ends: 110 [2023-11-23 21:09:17,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:17,479 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:17,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-23 21:09:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2023-11-23 21:09:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 21:09:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2023-11-23 21:09:17,502 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 58 [2023-11-23 21:09:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:17,503 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2023-11-23 21:09:17,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 21:09:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2023-11-23 21:09:17,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 21:09:17,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:17,508 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:09:17,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:17,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash -467621996, now seen corresponding path program 1 times [2023-11-23 21:09:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342135170] [2023-11-23 21:09:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 21:09:18,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342135170] [2023-11-23 21:09:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342135170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:18,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:09:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976147238] [2023-11-23 21:09:18,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:18,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:09:18,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:09:18,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:09:18,282 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:09:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:18,453 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2023-11-23 21:09:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:09:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 89 [2023-11-23 21:09:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:18,462 INFO L225 Difference]: With dead ends: 156 [2023-11-23 21:09:18,462 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 21:09:18,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:09:18,466 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 3 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:18,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 550 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:09:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 21:09:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-23 21:09:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 59 states have (on average 1.11864406779661) internal successors, (66), 60 states have internal predecessors, (66), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-23 21:09:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2023-11-23 21:09:18,499 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 89 [2023-11-23 21:09:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:18,500 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2023-11-23 21:09:18,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:09:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2023-11-23 21:09:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 21:09:18,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:18,503 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:09:18,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:18,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -781566868, now seen corresponding path program 1 times [2023-11-23 21:09:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:18,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77905661] [2023-11-23 21:09:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 21:09:19,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77905661] [2023-11-23 21:09:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77905661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:09:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461025245] [2023-11-23 21:09:19,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:19,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:09:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:09:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:09:19,810 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:09:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:20,045 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2023-11-23 21:09:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:09:20,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 93 [2023-11-23 21:09:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:20,050 INFO L225 Difference]: With dead ends: 154 [2023-11-23 21:09:20,051 INFO L226 Difference]: Without dead ends: 104 [2023-11-23 21:09:20,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:09:20,054 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:20,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 872 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:09:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-23 21:09:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-23 21:09:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 56 states have internal predecessors, (60), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 21:09:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2023-11-23 21:09:20,079 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 93 [2023-11-23 21:09:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:20,081 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2023-11-23 21:09:20,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:09:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2023-11-23 21:09:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 21:09:20,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:20,087 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:09:20,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:20,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash 494783669, now seen corresponding path program 1 times [2023-11-23 21:09:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995480232] [2023-11-23 21:09:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 21:09:32,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995480232] [2023-11-23 21:09:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995480232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:32,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856301701] [2023-11-23 21:09:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:32,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:32,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a773bf-4e4d-464d-9769-8a2e06fc9646/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:09:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:33,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 123 conjunts are in the unsatisfiable core [2023-11-23 21:09:33,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:34,857 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 13 treesize of output 9 [2023-11-23 21:09:35,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 75 [2023-11-23 21:09:35,159 INFO L349 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2023-11-23 21:09:35,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 102 [2023-11-23 21:09:35,220 INFO L349 Elim1Store]: treesize reduction 100, result has 8.3 percent of original size [2023-11-23 21:09:35,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 48 [2023-11-23 21:09:36,879 INFO L349 Elim1Store]: treesize reduction 50, result has 57.3 percent of original size [2023-11-23 21:09:36,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 161 treesize of output 156 [2023-11-23 21:09:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 21:09:37,297 INFO L327 TraceCheckSpWp]: Computing backward predicates...