./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:30:48,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:30:48,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:30:48,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:30:48,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:30:48,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:30:48,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:30:48,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:30:48,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:30:48,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:30:48,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:30:48,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:30:48,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:30:48,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:30:48,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:30:48,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:30:48,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:30:48,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:30:48,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:30:48,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:30:48,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:30:48,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:30:48,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:30:48,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:30:48,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:30:48,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:30:48,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:30:48,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:30:48,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:30:48,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:30:48,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:30:48,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:30:48,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:30:48,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:30:48,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:30:48,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:30:48,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:30:48,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:30:48,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:30:48,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:30:48,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:30:48,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:30:48,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:30:48,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:30:48,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:30:48,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:30:48,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:30:48,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:30:48,395 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:30:48,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:30:48,396 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:30:48,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:30:48,396 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:30:48,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:30:48,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:30:48,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:30:48,397 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:30:48,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:30:48,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:30:48,398 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:30:48,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:30:48,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:30:48,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:30:48,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:30:48,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:30:48,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:30:48,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:30:48,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:30:48,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:30:48,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:30:48,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:30:48,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:30:48,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:30:48,401 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:30:48,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:30:48,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:30:48,401 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:30:48,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:30:48,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:30:48,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:30:48,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-11-22 02:30:48,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:30:48,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:30:48,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:30:48,744 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:30:48,745 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:30:48,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-22 02:30:52,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:30:52,745 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:30:52,746 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-22 02:30:52,793 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/data/b8031e10a/62208340f6d444ee822f9d7b09f4343b/FLAG1368c25fb [2022-11-22 02:30:52,818 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/data/b8031e10a/62208340f6d444ee822f9d7b09f4343b [2022-11-22 02:30:52,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:30:52,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:30:52,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:30:52,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:30:52,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:30:52,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:52" (1/1) ... [2022-11-22 02:30:52,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e187f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:52, skipping insertion in model container [2022-11-22 02:30:52,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:52" (1/1) ... [2022-11-22 02:30:52,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:30:52,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:30:53,222 WARN L237 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_90099a8c-b93b-467e-a7cd-8131f9c3f70f/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-22 02:30:53,232 WARN L237 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_90099a8c-b93b-467e-a7cd-8131f9c3f70f/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-22 02:30:54,525 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,526 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,527 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,528 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,529 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,547 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,548 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,550 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:54,551 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,151 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:30:55,153 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:30:55,155 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:30:55,156 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:30:55,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:30:55,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:30:55,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:30:55,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:30:55,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:30:55,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:30:55,407 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:30:55,535 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,536 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:30:55,800 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:30:55,833 WARN L237 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_90099a8c-b93b-467e-a7cd-8131f9c3f70f/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-22 02:30:55,833 WARN L237 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_90099a8c-b93b-467e-a7cd-8131f9c3f70f/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-22 02:30:55,899 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,902 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,905 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,906 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,907 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,920 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,921 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,922 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:55,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:30:55,995 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:30:55,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:30:55,997 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:30:55,998 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:30:55,999 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:30:56,000 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:30:56,000 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:30:56,001 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:30:56,001 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:30:56,032 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:30:56,107 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:56,108 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:30:56,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:30:56,422 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:30:56,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56 WrapperNode [2022-11-22 02:30:56,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:30:56,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:30:56,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:30:56,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:30:56,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,674 INFO L138 Inliner]: procedures = 691, calls = 2503, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 816 [2022-11-22 02:30:56,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:30:56,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:30:56,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:30:56,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:30:56,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:30:56,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:30:56,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:30:56,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:30:56,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2022-11-22 02:30:56,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:30:56,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:30:56,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:30:56,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:30:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-22 02:30:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-22 02:30:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:30:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 02:30:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 02:30:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:30:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:30:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:30:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-11-22 02:30:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-11-22 02:30:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:30:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:30:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:30:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:30:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:30:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 02:30:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 02:30:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-22 02:30:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-22 02:30:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:30:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:30:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:30:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:30:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:30:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-22 02:30:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-22 02:30:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:30:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-22 02:30:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-22 02:30:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-22 02:30:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-22 02:30:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:30:57,270 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:30:57,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:30:58,997 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:30:59,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:30:59,438 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:30:59,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:59 BoogieIcfgContainer [2022-11-22 02:30:59,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:30:59,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:30:59,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:30:59,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:30:59,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:30:52" (1/3) ... [2022-11-22 02:30:59,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ea5cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:59, skipping insertion in model container [2022-11-22 02:30:59,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (2/3) ... [2022-11-22 02:30:59,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ea5cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:59, skipping insertion in model container [2022-11-22 02:30:59,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:59" (3/3) ... [2022-11-22 02:30:59,456 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-11-22 02:30:59,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:30:59,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:30:59,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:30:59,567 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=LoopsAndPotentialCycles, 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;@772ec6d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:30:59,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:30:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-22 02:30:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:30:59,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:59,588 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:59,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 591884185, now seen corresponding path program 1 times [2022-11-22 02:30:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649543942] [2022-11-22 02:30:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 02:31:04,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:04,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649543942] [2022-11-22 02:31:04,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649543942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:04,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:04,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 02:31:04,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647892794] [2022-11-22 02:31:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:04,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:31:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:31:04,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:31:04,278 INFO L87 Difference]: Start difference. First operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-22 02:31:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:06,187 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2022-11-22 02:31:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:31:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 50 [2022-11-22 02:31:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:06,203 INFO L225 Difference]: With dead ends: 124 [2022-11-22 02:31:06,203 INFO L226 Difference]: Without dead ends: 81 [2022-11-22 02:31:06,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:31:06,221 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 40 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:06,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 451 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:31:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-22 02:31:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-22 02:31:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-22 02:31:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-11-22 02:31:06,293 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 50 [2022-11-22 02:31:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:06,295 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-11-22 02:31:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-22 02:31:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-11-22 02:31:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:31:06,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:06,299 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:06,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:31:06,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:06,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:06,300 INFO L85 PathProgramCache]: Analyzing trace with hash -746103450, now seen corresponding path program 1 times [2022-11-22 02:31:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937097453] [2022-11-22 02:31:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:06,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 02:31:20,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937097453] [2022-11-22 02:31:20,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937097453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695723799] [2022-11-22 02:31:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:20,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:20,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90099a8c-b93b-467e-a7cd-8131f9c3f70f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:31:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:21,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-22 02:31:21,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:21,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:31:25,296 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:31:25,307 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:31:25,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-22 02:31:25,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:31:25,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2022-11-22 02:31:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:31:26,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:30,437 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-22 02:40:38,841 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.