./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:37,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:37,712 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:59:37,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:37,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:37,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:37,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:37,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:37,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:37,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:37,745 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:37,746 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:37,746 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:37,747 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:37,748 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:37,748 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:37,749 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:37,750 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:37,750 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:37,751 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:37,758 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:37,758 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:37,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:37,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:37,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:37,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:37,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:37,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:37,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:37,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:37,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:37,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:37,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:37,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:37,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:37,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:37,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:37,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:37,768 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:37,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:37,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:37,769 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:37,769 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:37,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:37,770 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_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2023-11-24 23:59:38,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:38,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:38,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:38,121 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:38,121 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:38,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2023-11-24 23:59:41,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:41,788 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:41,788 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2023-11-24 23:59:41,835 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/data/62c0fd3cc/ceb18b51d32746d3a88a54ab9cda491d/FLAG8f52ccf82 [2023-11-24 23:59:41,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/data/62c0fd3cc/ceb18b51d32746d3a88a54ab9cda491d [2023-11-24 23:59:41,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:41,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:41,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:41,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:41,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:41,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:41" (1/1) ... [2023-11-24 23:59:41,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb05e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:41, skipping insertion in model container [2023-11-24 23:59:41,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:41" (1/1) ... [2023-11-24 23:59:42,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:42,419 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_d775497f-26f3-4a91-b43c-383a9b0646e1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2023-11-24 23:59:42,429 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_d775497f-26f3-4a91-b43c-383a9b0646e1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2023-11-24 23:59:43,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,732 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:43,753 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,262 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:59:44,263 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:59:44,265 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:59:44,266 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:59:44,268 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:59:44,269 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:59:44,269 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:59:44,270 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:59:44,271 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:59:44,272 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:59:44,559 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:44,723 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:44,738 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_d775497f-26f3-4a91-b43c-383a9b0646e1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2023-11-24 23:59:44,739 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_d775497f-26f3-4a91-b43c-383a9b0646e1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2023-11-24 23:59:44,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,785 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,786 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,836 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:59:44,845 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:59:44,846 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:59:44,847 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:59:44,848 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:59:44,848 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:59:44,849 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:59:44,849 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:59:44,850 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:59:44,850 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:59:44,985 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-24 23:59:44,989 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:44,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:45,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-24 23:59:45,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:45,401 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,401 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,402 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,402 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,402 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,403 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,403 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,404 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,404 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,405 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,405 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,405 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,405 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,407 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,408 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,408 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,408 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,408 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,408 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,408 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,416 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:45,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45 WrapperNode [2023-11-24 23:59:45,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:45,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:45,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:45,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:45,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,636 INFO L138 Inliner]: procedures = 692, calls = 2797, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 875 [2023-11-24 23:59:45,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:45,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:45,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:45,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:45,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:45,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:45,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:45,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:45,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:45,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:45,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:45,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-24 23:59:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-24 23:59:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:59:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:59:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-24 23:59:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-24 23:59:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:59:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:59:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:59:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:59:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:59:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:59:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:59:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:59:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:59:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:59:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:59:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:59:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:59:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:59:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:59:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-24 23:59:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-24 23:59:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:59:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:59:45,851 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:59:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:59:45,851 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:59:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:59:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:59:46,167 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:46,169 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:47,411 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:47,777 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:47,777 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:59:47,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:47 BoogieIcfgContainer [2023-11-24 23:59:47,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:47,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:47,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:47,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:47,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:41" (1/3) ... [2023-11-24 23:59:47,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb94e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:47, skipping insertion in model container [2023-11-24 23:59:47,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (2/3) ... [2023-11-24 23:59:47,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb94e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:47, skipping insertion in model container [2023-11-24 23:59:47,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:47" (3/3) ... [2023-11-24 23:59:47,797 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2023-11-24 23:59:47,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:47,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:59:47,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:47,889 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;@49b7573, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:47,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:59:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-24 23:59:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-24 23:59:47,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:47,917 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:59:47,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:47,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash 885523129, now seen corresponding path program 1 times [2023-11-24 23:59:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130292781] [2023-11-24 23:59:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:47,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:59:49,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:59:49,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130292781] [2023-11-24 23:59:49,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130292781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:49,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:49,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:59:49,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68456142] [2023-11-24 23:59:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:49,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:49,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:59:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:49,321 INFO L87 Difference]: Start difference. First operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-24 23:59:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:49,532 INFO L93 Difference]: Finished difference Result 160 states and 221 transitions. [2023-11-24 23:59:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:59:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2023-11-24 23:59:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:49,545 INFO L225 Difference]: With dead ends: 160 [2023-11-24 23:59:49,546 INFO L226 Difference]: Without dead ends: 125 [2023-11-24 23:59:49,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:49,553 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 11 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:49,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 320 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:59:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-24 23:59:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-11-24 23:59:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-24 23:59:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2023-11-24 23:59:49,614 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2023-11-24 23:59:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:49,615 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2023-11-24 23:59:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-24 23:59:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2023-11-24 23:59:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-24 23:59:49,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:49,620 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2023-11-24 23:59:49,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:59:49,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:49,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1884871142, now seen corresponding path program 1 times [2023-11-24 23:59:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:49,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958694619] [2023-11-24 23:59:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-25 00:00:05,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958694619] [2023-11-25 00:00:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958694619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:05,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093846874] [2023-11-25 00:00:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:05,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:05,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:05,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d775497f-26f3-4a91-b43c-383a9b0646e1/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:00:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:06,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-25 00:00:06,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:07,029 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 [2023-11-25 00:00:07,038 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 [2023-11-25 00:00:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:00:16,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:18,864 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 56951 disjunctions. This might take some time...