./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 38b53e6a 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_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/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_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur --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-38b53e6 [2022-11-25 23:56:06,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:56:06,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:56:06,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:56:06,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:56:06,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:56:06,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:56:06,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:56:06,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:56:06,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:56:06,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:56:06,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:56:06,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:56:06,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:56:06,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:56:06,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:56:06,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:56:06,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:56:06,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:56:06,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:56:06,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:56:06,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:56:06,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:56:06,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:56:06,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:56:06,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:56:06,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:56:06,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:56:06,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:56:06,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:56:06,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:56:06,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:56:06,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:56:06,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:56:06,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:56:06,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:56:06,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:56:06,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:56:06,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:56:06,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:56:06,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:56:06,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:56:06,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:56:06,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:56:06,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:56:06,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:56:06,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:56:06,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:56:06,440 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:56:06,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:56:06,441 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:56:06,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:56:06,441 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:56:06,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:56:06,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:56:06,442 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:56:06,442 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:56:06,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:56:06,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:56:06,443 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:56:06,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:56:06,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:56:06,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:56:06,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:56:06,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:56:06,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:56:06,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:56:06,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:56:06,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:56:06,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:56:06,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:56:06,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:56:06,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:56:06,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:56:06,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:56:06,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:56:06,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:56:06,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:56:06,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:56:06,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:56:06,447 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_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-11-25 23:56:06,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:56:06,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:56:06,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:56:06,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:56:06,706 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:56:06,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-25 23:56:09,864 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:56:10,519 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:56:10,520 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-25 23:56:10,568 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/data/01d2b456a/975cb93da3a14374b0863abd103b6c68/FLAG9ec7a3f87 [2022-11-25 23:56:10,585 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/data/01d2b456a/975cb93da3a14374b0863abd103b6c68 [2022-11-25 23:56:10,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:56:10,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:56:10,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:56:10,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:56:10,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:56:10,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:56:10" (1/1) ... [2022-11-25 23:56:10,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cdecaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:10, skipping insertion in model container [2022-11-25 23:56:10,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:56:10" (1/1) ... [2022-11-25 23:56:10,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:56:10,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:56:11,066 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_fb73f6e7-1912-4921-98a2-bef3f47ef275/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-25 23:56:11,079 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_fb73f6e7-1912-4921-98a2-bef3f47ef275/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-25 23:56:12,167 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:12,187 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:12,195 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,196 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,196 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,197 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,199 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,204 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:12,215 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,216 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,218 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,219 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:12,308 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:56:12,309 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:56:12,310 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:56:12,316 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:56:12,318 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:56:12,319 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:56:12,511 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:12,723 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:56:12,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:56:12,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:56:12,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:56:12,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:56:12,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:56:12,738 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:56:12,739 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:56:12,744 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:56:12,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:56:12,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:56:13,013 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:56:13,037 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,038 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,049 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,052 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,059 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,060 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:56:13,075 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:56:13,121 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:56:13,133 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,135 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,173 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,210 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,240 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:56:13,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:56:13,295 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:56:13,310 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_fb73f6e7-1912-4921-98a2-bef3f47ef275/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-25 23:56:13,311 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_fb73f6e7-1912-4921-98a2-bef3f47ef275/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-25 23:56:13,341 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,350 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,354 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,354 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,355 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,355 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,356 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,359 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,364 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,364 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,365 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,366 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,375 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:56:13,375 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:56:13,376 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:56:13,380 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:56:13,382 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:56:13,382 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:56:13,386 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,409 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:56:13,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:56:13,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:56:13,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:56:13,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:56:13,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:56:13,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:56:13,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:56:13,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:56:13,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:56:13,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:56:13,441 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:56:13,448 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,449 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,456 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,459 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,460 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,461 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:56:13,469 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:56:13,491 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:56:13,551 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,551 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:56:13,560 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,569 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:56:13,599 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:56:13,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:56:13,907 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:56:13,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13 WrapperNode [2022-11-25 23:56:13,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:56:13,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:56:13,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:56:13,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:56:13,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,139 INFO L138 Inliner]: procedures = 691, calls = 2503, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 816 [2022-11-25 23:56:14,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:56:14,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:56:14,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:56:14,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:56:14,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:56:14,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:56:14,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:56:14,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:56:14,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (1/1) ... [2022-11-25 23:56:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:56:14,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:14,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:56:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:56:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-25 23:56:14,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-25 23:56:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:56:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 23:56:14,308 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 23:56:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:56:14,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:56:14,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:56:14,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-11-25 23:56:14,309 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-11-25 23:56:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:56:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:56:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:56:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:56:14,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:56:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 23:56:14,311 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 23:56:14,311 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-25 23:56:14,311 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-25 23:56:14,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:56:14,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:56:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:56:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:56:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:56:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 23:56:14,318 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 23:56:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:56:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-25 23:56:14,319 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-25 23:56:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-25 23:56:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-25 23:56:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:56:14,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:56:14,715 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:56:16,128 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:56:16,586 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:56:16,586 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:56:16,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:56:16 BoogieIcfgContainer [2022-11-25 23:56:16,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:56:16,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:56:16,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:56:16,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:56:16,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:56:10" (1/3) ... [2022-11-25 23:56:16,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd45461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:56:16, skipping insertion in model container [2022-11-25 23:56:16,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:13" (2/3) ... [2022-11-25 23:56:16,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd45461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:56:16, skipping insertion in model container [2022-11-25 23:56:16,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:56:16" (3/3) ... [2022-11-25 23:56:16,604 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-11-25 23:56:16,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:56:16,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:56:16,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:56:16,713 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;@28b7986a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:56:16,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:56:16,717 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) [2022-11-25 23:56:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 23:56:16,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:16,728 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] [2022-11-25 23:56:16,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:56:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash 591884185, now seen corresponding path program 1 times [2022-11-25 23:56:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:16,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276572854] [2022-11-25 23:56:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:16,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 23:56:21,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:21,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276572854] [2022-11-25 23:56:21,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276572854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:21,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:56:21,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:56:21,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660559597] [2022-11-25 23:56:21,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:56:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:56:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:56:21,223 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) [2022-11-25 23:56:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:23,274 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2022-11-25 23:56:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:56:23,281 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 [2022-11-25 23:56:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:23,295 INFO L225 Difference]: With dead ends: 124 [2022-11-25 23:56:23,295 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 23:56:23,306 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 [2022-11-25 23:56:23,318 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 36 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:23,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 451 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 23:56:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 23:56:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-25 23:56:23,396 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) [2022-11-25 23:56:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-11-25 23:56:23,409 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 50 [2022-11-25 23:56:23,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:23,412 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-11-25 23:56:23,413 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) [2022-11-25 23:56:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-11-25 23:56:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:56:23,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:23,422 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] [2022-11-25 23:56:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:56:23,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:56:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -746103450, now seen corresponding path program 1 times [2022-11-25 23:56:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:23,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155388036] [2022-11-25 23:56:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:23,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 23:56:36,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:36,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155388036] [2022-11-25 23:56:36,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155388036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:36,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689497749] [2022-11-25 23:56:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:36,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:36,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb73f6e7-1912-4921-98a2-bef3f47ef275/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:56:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:36,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-25 23:56:36,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:37,279 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 [2022-11-25 23:56:40,411 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:56:40,422 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:56:40,936 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 [2022-11-25 23:56:41,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 23:56:41,012 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 [2022-11-25 23:56:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:56:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:44,804 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-26 00:04:11,794 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.