./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/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_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/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_f260e733-70c6-4b8a-baf8-d78a41ae3341/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 60c6b7f7f10f0b58422dda68af0c160071220e1df94b065f3ff541927c670dfd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:02,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:02,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:37:02,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:02,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:02,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:02,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:02,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:02,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:02,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:02,711 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:02,712 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:02,713 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:02,714 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:02,715 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:02,715 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:02,716 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:02,716 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:02,717 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:02,717 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:02,718 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:02,718 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:02,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:02,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:02,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:02,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:02,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:02,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:02,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:02,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:02,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:02,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:02,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:02,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:02,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:02,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:02,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:02,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:02,727 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:02,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:02,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:02,729 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:02,729 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:02,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:02,730 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_f260e733-70c6-4b8a-baf8-d78a41ae3341/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60c6b7f7f10f0b58422dda68af0c160071220e1df94b065f3ff541927c670dfd [2023-11-23 20:37:03,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:03,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:03,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:03,110 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:03,111 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:03,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i [2023-11-23 20:37:06,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:07,018 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:07,019 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i [2023-11-23 20:37:07,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/data/fb7a78d31/9b0613aa3e4945c491d19ad82bd3efbe/FLAG748351c03 [2023-11-23 20:37:07,102 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/data/fb7a78d31/9b0613aa3e4945c491d19ad82bd3efbe [2023-11-23 20:37:07,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:07,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:07,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:07,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:07,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:07,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:07" (1/1) ... [2023-11-23 20:37:07,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f0051c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:07, skipping insertion in model container [2023-11-23 20:37:07,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:07" (1/1) ... [2023-11-23 20:37:07,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:07,768 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i[4492,4505] [2023-11-23 20:37:07,779 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_f260e733-70c6-4b8a-baf8-d78a41ae3341/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i[4552,4565] [2023-11-23 20:37:09,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,222 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,224 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:09,945 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:37:09,947 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:37:09,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:37:09,951 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:37:09,954 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:37:09,955 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:37:09,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:37:09,957 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:37:09,958 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:37:09,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:37:10,738 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,740 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,784 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:10,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:10,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:10,971 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_f260e733-70c6-4b8a-baf8-d78a41ae3341/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i[4492,4505] [2023-11-23 20:37:10,972 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_f260e733-70c6-4b8a-baf8-d78a41ae3341/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness_negated.i[4552,4565] [2023-11-23 20:37:11,042 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,042 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,043 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,043 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,044 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,057 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,058 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,101 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:37:11,102 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:37:11,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:37:11,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:37:11,104 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:37:11,106 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:37:11,107 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:37:11,107 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:37:11,108 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:37:11,109 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:37:11,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-23 20:37:11,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,312 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,316 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,316 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,330 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:11,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:11,684 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,684 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,684 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,684 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,685 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,685 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,685 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,685 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,685 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,685 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,686 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,686 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,686 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,686 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,686 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,686 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,687 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,687 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,694 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:11,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11 WrapperNode [2023-11-23 20:37:11,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:11,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:11,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:11,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:11,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,972 INFO L138 Inliner]: procedures = 772, calls = 2453, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 643 [2023-11-23 20:37:11,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:11,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:11,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:11,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:11,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:12,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:12,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:12,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:12,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:12,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:12,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:12,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:37:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:37:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 20:37:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 20:37:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:37:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:37:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 20:37:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 20:37:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2023-11-23 20:37:12,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2023-11-23 20:37:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:37:12,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:12,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:12,234 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 20:37:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 20:37:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 20:37:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 20:37:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 20:37:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 20:37:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:37:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 20:37:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 20:37:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:37:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 20:37:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 20:37:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 20:37:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 20:37:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2023-11-23 20:37:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2023-11-23 20:37:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:37:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:37:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2023-11-23 20:37:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2023-11-23 20:37:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 20:37:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 20:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 20:37:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 20:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 20:37:12,242 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 20:37:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:12,772 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:12,775 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:13,784 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:14,120 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:14,120 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:37:14,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:14 BoogieIcfgContainer [2023-11-23 20:37:14,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:14,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:14,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:14,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:14,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:07" (1/3) ... [2023-11-23 20:37:14,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401e8098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:14, skipping insertion in model container [2023-11-23 20:37:14,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (2/3) ... [2023-11-23 20:37:14,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401e8098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:14, skipping insertion in model container [2023-11-23 20:37:14,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:14" (3/3) ... [2023-11-23 20:37:14,133 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness_negated.i [2023-11-23 20:37:14,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:14,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:37:14,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:14,216 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;@295028ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:14,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:37:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 69 states have internal predecessors, (80), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-23 20:37:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 20:37:14,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:14,241 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:37:14,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:14,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 7096117, now seen corresponding path program 1 times [2023-11-23 20:37:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545517269] [2023-11-23 20:37:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:14,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:37:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954406086] [2023-11-23 20:37:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:14,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:14,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:14,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:37:14,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:37:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:15,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:15,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 20:37:15,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:15,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545517269] [2023-11-23 20:37:15,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:37:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954406086] [2023-11-23 20:37:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954406086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:37:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236276339] [2023-11-23 20:37:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:15,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:37:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:37:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:37:15,951 INFO L87 Difference]: Start difference. First operand has 129 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 69 states have internal predecessors, (80), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 20:37:16,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:16,782 INFO L93 Difference]: Finished difference Result 237 states and 316 transitions. [2023-11-23 20:37:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:37:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 117 [2023-11-23 20:37:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:16,798 INFO L225 Difference]: With dead ends: 237 [2023-11-23 20:37:16,798 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 20:37:16,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:37:16,814 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 119 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:16,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 448 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:37:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 20:37:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-23 20:37:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 68 states have (on average 1.161764705882353) internal successors, (79), 70 states have internal predecessors, (79), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2023-11-23 20:37:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2023-11-23 20:37:16,882 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 117 [2023-11-23 20:37:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:16,883 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2023-11-23 20:37:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 20:37:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2023-11-23 20:37:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 20:37:16,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:16,888 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:37:16,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:17,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:17,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:17,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash -393193183, now seen corresponding path program 1 times [2023-11-23 20:37:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:17,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106296329] [2023-11-23 20:37:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:17,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:37:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597007586] [2023-11-23 20:37:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:17,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:17,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:37:17,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f260e733-70c6-4b8a-baf8-d78a41ae3341/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:37:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:17,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:37:17,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 57 proven. 33 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 20:37:18,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 20:37:18,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:18,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106296329] [2023-11-23 20:37:18,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:37:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597007586] [2023-11-23 20:37:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597007586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [883674905] [2023-11-23 20:37:18,502 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2023-11-23 20:37:18,503 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:37:18,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:37:18,514 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:37:18,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs