./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh --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 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 --- 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-2329fc7 [2022-12-14 14:25:01,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:25:01,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:25:01,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:25:01,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:25:01,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:25:01,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:25:01,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:25:01,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:25:01,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:25:01,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:25:01,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:25:01,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:25:01,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:25:01,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:25:01,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:25:01,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:25:01,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:25:01,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:25:01,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:25:01,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:25:01,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:25:01,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:25:01,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:25:01,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:25:01,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:25:01,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:25:01,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:25:01,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:25:01,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:25:01,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:25:01,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:25:01,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:25:01,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:25:01,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:25:01,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:25:01,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:25:01,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:25:01,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:25:01,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:25:01,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:25:01,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 14:25:01,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:25:01,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:25:01,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:25:01,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:25:01,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:25:01,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:25:01,292 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:25:01,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:25:01,298 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:25:01,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:25:01,298 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:25:01,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:25:01,298 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:25:01,299 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:25:01,299 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:25:01,299 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:25:01,299 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:25:01,299 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:25:01,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:25:01,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:25:01,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:25:01,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:25:01,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:25:01,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:25:01,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:25:01,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:25:01,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:25:01,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:25:01,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:25:01,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:25:01,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:25:01,302 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:25:01,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:25:01,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:25:01,302 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:25:01,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:25:01,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:25:01,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:25:01,303 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_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 [2022-12-14 14:25:01,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:25:01,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:25:01,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:25:01,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:25:01,505 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:25:01,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-12-14 14:25:04,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:25:04,497 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:25:04,498 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-12-14 14:25:04,522 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/data/e63fb51ac/fa5b1609a4a840f2b2e4544fc029441e/FLAGd15373e3b [2022-12-14 14:25:04,534 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/data/e63fb51ac/fa5b1609a4a840f2b2e4544fc029441e [2022-12-14 14:25:04,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:25:04,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:25:04,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:25:04,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:25:04,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:25:04,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:25:04" (1/1) ... [2022-12-14 14:25:04,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3692ada2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:04, skipping insertion in model container [2022-12-14 14:25:04,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:25:04" (1/1) ... [2022-12-14 14:25:04,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:25:04,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:25:04,815 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_163885bd-9876-4c9a-9a00-7afae91198ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-12-14 14:25:04,821 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_163885bd-9876-4c9a-9a00-7afae91198ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-12-14 14:25:05,498 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:05,513 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:05,521 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,521 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,522 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,523 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,524 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,529 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:05,538 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,538 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,541 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,541 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:05,616 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 14:25:05,617 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 14:25:05,617 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 14:25:05,622 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 14:25:05,625 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 14:25:05,625 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 14:25:05,767 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:05,910 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 14:25:05,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 14:25:05,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 14:25:05,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 14:25:05,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 14:25:05,916 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 14:25:05,917 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 14:25:05,917 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 14:25:05,918 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 14:25:05,919 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 14:25:05,919 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 14:25:06,067 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 14:25:06,100 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,101 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,111 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,114 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,115 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,116 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 14:25:06,127 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:25:06,156 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:25:06,164 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,164 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,176 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,201 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,223 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 14:25:06,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:25:06,287 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:25:06,298 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_163885bd-9876-4c9a-9a00-7afae91198ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-12-14 14:25:06,298 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_163885bd-9876-4c9a-9a00-7afae91198ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-12-14 14:25:06,323 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,328 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,330 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,330 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,331 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,331 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,332 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,333 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,337 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,337 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,338 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,338 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,344 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 14:25:06,344 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 14:25:06,344 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 14:25:06,347 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 14:25:06,349 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 14:25:06,349 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 14:25:06,352 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,368 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 14:25:06,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 14:25:06,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 14:25:06,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 14:25:06,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 14:25:06,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 14:25:06,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 14:25:06,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 14:25:06,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 14:25:06,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 14:25:06,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 14:25:06,390 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 14:25:06,400 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,401 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,405 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,407 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,408 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,409 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 14:25:06,414 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:25:06,426 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:25:06,431 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,431 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 14:25:06,439 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,442 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 14:25:06,456 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 14:25:06,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:25:06,663 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:25:06,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06 WrapperNode [2022-12-14 14:25:06,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:25:06,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:25:06,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:25:06,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:25:06,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,794 INFO L138 Inliner]: procedures = 691, calls = 2613, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 795 [2022-12-14 14:25:06,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:25:06,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:25:06,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:25:06,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:25:06,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:25:06,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:25:06,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:25:06,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:25:06,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (1/1) ... [2022-12-14 14:25:06,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:25:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:06,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:25:06,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:25:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 14:25:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 14:25:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 14:25:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:25:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-12-14 14:25:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:25:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 14:25:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 14:25:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 14:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 14:25:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 14:25:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-12-14 14:25:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-12-14 14:25:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-12-14 14:25:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:25:07,095 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:25:07,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:25:07,830 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:25:08,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:25:08,012 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:25:08,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:08 BoogieIcfgContainer [2022-12-14 14:25:08,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:25:08,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:25:08,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:25:08,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:25:08,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:25:04" (1/3) ... [2022-12-14 14:25:08,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295e33f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:25:08, skipping insertion in model container [2022-12-14 14:25:08,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:06" (2/3) ... [2022-12-14 14:25:08,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295e33f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:25:08, skipping insertion in model container [2022-12-14 14:25:08,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:08" (3/3) ... [2022-12-14 14:25:08,020 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness.i [2022-12-14 14:25:08,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:25:08,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:25:08,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:25:08,074 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;@4022b008, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:25:08,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:25:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-14 14:25:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 14:25:08,083 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:08,084 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:08,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1490312850, now seen corresponding path program 1 times [2022-12-14 14:25:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844361885] [2022-12-14 14:25:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:25:10,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:10,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844361885] [2022-12-14 14:25:10,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844361885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:10,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:10,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 14:25:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436359404] [2022-12-14 14:25:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:10,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 14:25:10,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 14:25:10,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:25:10,826 INFO L87 Difference]: Start difference. First operand has 70 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-12-14 14:25:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:11,792 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2022-12-14 14:25:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 14:25:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-12-14 14:25:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:11,800 INFO L225 Difference]: With dead ends: 101 [2022-12-14 14:25:11,800 INFO L226 Difference]: Without dead ends: 68 [2022-12-14 14:25:11,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:25:11,806 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 25 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:11,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 327 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 14:25:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-14 14:25:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-12-14 14:25:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 14:25:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-12-14 14:25:11,846 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 43 [2022-12-14 14:25:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:11,847 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-12-14 14:25:11,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-12-14 14:25:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-12-14 14:25:11,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 14:25:11,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:11,850 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:11,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:25:11,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1214501956, now seen corresponding path program 1 times [2022-12-14 14:25:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:11,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036420436] [2022-12-14 14:25:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:11,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:25:17,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:17,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036420436] [2022-12-14 14:25:17,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036420436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:17,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330733639] [2022-12-14 14:25:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:17,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:17,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:17,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163885bd-9876-4c9a-9a00-7afae91198ed/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:25:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:17,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-14 14:25:17,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:17,961 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 [2022-12-14 14:25:20,045 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 14:25:20,055 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 14:25:20,067 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 14:25:20,072 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 14:25:20,480 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 [2022-12-14 14:25:20,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:25:20,548 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 0 case distinctions, treesize of input 39 treesize of output 17 [2022-12-14 14:25:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 14:25:20,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:25:23,202 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 14:31:28,971 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.