./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:56,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:56,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 21:02:56,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:56,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:56,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:56,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:56,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:56,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:02:56,635 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:02:56,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:56,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:56,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:56,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:56,640 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:56,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:56,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:02:56,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:56,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:56,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:02:56,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:56,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:02:56,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:02:56,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:56,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:56,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:56,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:56,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:56,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:56,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:56,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:56,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:02:56,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:02:56,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:02:56,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:56,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:56,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:02:56,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:56,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:56,654 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2023-11-21 21:02:57,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:57,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:57,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:57,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:57,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:57,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2023-11-21 21:03:00,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:03:00,843 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:03:00,845 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2023-11-21 21:03:00,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/data/ff8eb3520/1077596eadd146a885e1f5b2cafdcc13/FLAGd522379a7 [2023-11-21 21:03:00,907 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/data/ff8eb3520/1077596eadd146a885e1f5b2cafdcc13 [2023-11-21 21:03:00,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:03:00,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:03:00,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:00,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:03:00,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:03:00,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:00" (1/1) ... [2023-11-21 21:03:00,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7faec628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:00, skipping insertion in model container [2023-11-21 21:03:00,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:00" (1/1) ... [2023-11-21 21:03:01,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:03:01,302 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_4f7edfad-b555-4826-a5ec-31957b25b2cf/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2023-11-21 21:03:01,310 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_4f7edfad-b555-4826-a5ec-31957b25b2cf/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2023-11-21 21:03:02,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,430 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,431 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,434 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:02,938 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:03:02,940 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:03:02,942 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:03:02,947 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:03:02,951 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:03:02,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:03:02,957 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:03:02,958 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:03:02,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:03:02,963 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:03:03,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:03,551 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:03:03,575 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_4f7edfad-b555-4826-a5ec-31957b25b2cf/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2023-11-21 21:03:03,576 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_4f7edfad-b555-4826-a5ec-31957b25b2cf/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2023-11-21 21:03:03,626 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,627 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,628 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,628 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,642 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,695 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:03:03,696 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:03:03,697 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:03:03,698 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:03:03,699 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:03:03,699 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:03:03,705 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:03:03,706 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:03:03,707 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:03:03,709 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:03:03,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8315] [2023-11-21 21:03:03,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:03:03,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8801-8812] [2023-11-21 21:03:03,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:04,183 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,183 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,183 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,184 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,184 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,185 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,185 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,185 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,185 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,186 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,186 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,187 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,187 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,187 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,188 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,188 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,188 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,188 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:04,196 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:03:04,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04 WrapperNode [2023-11-21 21:03:04,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:04,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:04,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:03:04,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:03:04,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,451 INFO L138 Inliner]: procedures = 691, calls = 2624, calls flagged for inlining = 60, calls inlined = 10, statements flattened = 957 [2023-11-21 21:03:04,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:04,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:03:04,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:03:04,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:03:04,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,474 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,533 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-21 21:03:04,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:03:04,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:03:04,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:03:04,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:03:04,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:04,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:04,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:03:04,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:03:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-21 21:03:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-21 21:03:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:03:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 21:03:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 21:03:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:03:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 21:03:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 21:03:04,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 21:03:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 21:03:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:03:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:03:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:03:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:03:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:03:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 21:03:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 21:03:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2023-11-21 21:03:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2023-11-21 21:03:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_reserve [2023-11-21 21:03:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_reserve [2023-11-21 21:03:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-21 21:03:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-21 21:03:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:03:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:03:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:03:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:03:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 21:03:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 21:03:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 21:03:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 21:03:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 21:03:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:03:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:03:05,040 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:03:05,043 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:03:06,501 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:03:06,841 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:03:06,841 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 21:03:06,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:06 BoogieIcfgContainer [2023-11-21 21:03:06,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:03:06,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:03:06,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:03:06,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:03:06,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:00" (1/3) ... [2023-11-21 21:03:06,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356df611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:06, skipping insertion in model container [2023-11-21 21:03:06,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (2/3) ... [2023-11-21 21:03:06,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356df611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:06, skipping insertion in model container [2023-11-21 21:03:06,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:06" (3/3) ... [2023-11-21 21:03:06,852 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2023-11-21 21:03:06,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:03:06,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:03:06,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:03:06,933 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=PETRI_NET, 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;@11aa83f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:03:06,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:03:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 21:03:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 21:03:06,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:06,949 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 21:03:06,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:06,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1365814871, now seen corresponding path program 1 times [2023-11-21 21:03:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225562428] [2023-11-21 21:03:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:03:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 21:03:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 21:03:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 21:03:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225562428] [2023-11-21 21:03:07,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225562428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971967295] [2023-11-21 21:03:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:07,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:07,982 INFO L87 Difference]: Start difference. First operand has 116 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 21:03:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:08,455 INFO L93 Difference]: Finished difference Result 231 states and 328 transitions. [2023-11-21 21:03:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-11-21 21:03:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:08,470 INFO L225 Difference]: With dead ends: 231 [2023-11-21 21:03:08,470 INFO L226 Difference]: Without dead ends: 128 [2023-11-21 21:03:08,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:08,478 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 49 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:08,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 143 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:03:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-21 21:03:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2023-11-21 21:03:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 states have internal predecessors, (74), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-21 21:03:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 147 transitions. [2023-11-21 21:03:08,538 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 147 transitions. Word has length 34 [2023-11-21 21:03:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:08,539 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 147 transitions. [2023-11-21 21:03:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 21:03:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 147 transitions. [2023-11-21 21:03:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 21:03:08,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:08,542 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 21:03:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:03:08,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:08,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash 283177720, now seen corresponding path program 1 times [2023-11-21 21:03:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122481317] [2023-11-21 21:03:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:03:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 21:03:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:03:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 21:03:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:03:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:09,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122481317] [2023-11-21 21:03:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122481317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:09,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:03:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350905461] [2023-11-21 21:03:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:09,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:03:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:03:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:03:09,374 INFO L87 Difference]: Start difference. First operand 112 states and 147 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:03:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:10,594 INFO L93 Difference]: Finished difference Result 195 states and 253 transitions. [2023-11-21 21:03:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 21:03:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 37 [2023-11-21 21:03:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:10,598 INFO L225 Difference]: With dead ends: 195 [2023-11-21 21:03:10,598 INFO L226 Difference]: Without dead ends: 160 [2023-11-21 21:03:10,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:03:10,601 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 116 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:10,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 432 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 21:03:10,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-21 21:03:10,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 116. [2023-11-21 21:03:10,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 67 states have internal predecessors, (77), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2023-11-21 21:03:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 151 transitions. [2023-11-21 21:03:10,634 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 151 transitions. Word has length 37 [2023-11-21 21:03:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:10,635 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 151 transitions. [2023-11-21 21:03:10,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:03:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 151 transitions. [2023-11-21 21:03:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 21:03:10,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:10,638 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 21:03:10,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:03:10,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:10,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1685876690, now seen corresponding path program 1 times [2023-11-21 21:03:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568815315] [2023-11-21 21:03:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:03:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 21:03:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:03:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 21:03:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 21:03:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:03:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:26,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568815315] [2023-11-21 21:03:26,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568815315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:03:26,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035396467] [2023-11-21 21:03:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:26,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:26,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:26,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7edfad-b555-4826-a5ec-31957b25b2cf/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:03:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:27,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-21 21:03:27,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:27,526 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 15 treesize of output 1 [2023-11-21 21:03:27,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 21:03:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:35,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035396467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:35,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:03:35,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [18] total 31 [2023-11-21 21:03:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659558026] [2023-11-21 21:03:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:35,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 21:03:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 21:03:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2023-11-21 21:03:35,335 INFO L87 Difference]: Start difference. First operand 116 states and 151 transitions. Second operand has 18 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 8 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-21 21:03:38,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 21:03:40,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]