./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_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_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/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_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/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_29f1575b-3f25-4247-84c3-8b16c9032d6c/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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --- 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 [2022-11-26 00:58:29,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:58:29,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:58:29,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:58:29,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:58:29,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:58:29,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:58:29,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:58:29,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:58:29,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:58:29,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:58:29,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:58:29,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:58:29,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:58:29,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:58:29,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:58:29,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:58:29,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:58:29,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:58:29,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:58:29,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:58:29,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:58:29,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:58:29,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:58:29,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:58:29,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:58:29,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:58:29,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:58:29,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:58:29,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:58:29,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:58:29,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:58:29,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:58:29,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:58:29,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:58:29,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:58:29,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:58:29,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:58:29,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:58:29,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:58:29,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:58:29,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:58:29,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:58:29,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:58:29,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:58:29,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:58:29,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:58:29,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:58:29,519 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:58:29,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:58:29,519 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:58:29,520 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:58:29,520 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:58:29,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:58:29,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:58:29,521 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:58:29,521 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:58:29,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:58:29,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:58:29,522 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:58:29,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:58:29,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:58:29,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:58:29,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:58:29,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:58:29,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:58:29,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:58:29,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:58:29,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:58:29,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:58:29,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:58:29,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:58:29,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:58:29,526 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:58:29,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:58:29,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:58:29,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:58:29,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:58:29,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:58:29,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:58:29,527 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_29f1575b-3f25-4247-84c3-8b16c9032d6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2022-11-26 00:58:29,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:58:29,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:58:29,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:58:29,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:58:29,912 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:58:29,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2022-11-26 00:58:33,043 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:58:33,792 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:58:33,793 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2022-11-26 00:58:33,855 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/data/2ff30c704/022abce4bb454bf798d12a1f4e25af7c/FLAG51f032bdf [2022-11-26 00:58:33,878 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/data/2ff30c704/022abce4bb454bf798d12a1f4e25af7c [2022-11-26 00:58:33,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:58:33,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:58:33,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:58:33,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:58:33,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:58:33,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:58:33" (1/1) ... [2022-11-26 00:58:33,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640a22af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:33, skipping insertion in model container [2022-11-26 00:58:33,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:58:33" (1/1) ... [2022-11-26 00:58:33,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:58:34,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:58:34,422 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_29f1575b-3f25-4247-84c3-8b16c9032d6c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2022-11-26 00:58:34,433 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_29f1575b-3f25-4247-84c3-8b16c9032d6c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2022-11-26 00:58:35,650 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,651 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,651 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,652 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,654 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,670 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,671 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,677 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,678 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:35,778 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:58:35,779 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:58:35,780 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:58:35,786 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:58:35,788 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:58:35,789 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:58:36,261 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:58:36,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:58:36,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:58:36,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:58:36,269 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:58:36,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:58:36,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:58:36,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:58:36,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:58:36,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:58:36,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:58:36,483 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:58:36,525 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-26 00:58:36,536 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:58:36,596 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:58:36,605 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:36,606 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:36,757 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:58:37,155 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,155 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,186 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,187 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,195 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,196 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,215 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,217 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,218 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,219 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,219 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,220 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,220 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:58:37,336 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:58:37,364 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_29f1575b-3f25-4247-84c3-8b16c9032d6c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2022-11-26 00:58:37,368 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_29f1575b-3f25-4247-84c3-8b16c9032d6c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2022-11-26 00:58:37,412 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,413 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,413 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,418 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,419 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,425 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,428 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,430 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,431 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,439 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:58:37,439 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:58:37,440 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:58:37,443 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:58:37,445 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:58:37,447 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:58:37,483 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:58:37,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:58:37,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:58:37,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:58:37,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:58:37,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:58:37,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:58:37,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:58:37,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:58:37,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:58:37,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:58:37,532 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:58:37,559 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-26 00:58:37,567 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:58:37,586 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:58:37,593 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,596 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,633 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:58:37,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,710 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,711 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,716 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,718 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,729 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,730 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,730 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,731 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,732 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,733 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,734 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:58:37,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:58:38,147 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:58:38,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38 WrapperNode [2022-11-26 00:58:38,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:58:38,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:58:38,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:58:38,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:58:38,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,358 INFO L138 Inliner]: procedures = 776, calls = 3575, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 786 [2022-11-26 00:58:38,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:58:38,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:58:38,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:58:38,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:58:38,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:58:38,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:58:38,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:58:38,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:58:38,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (1/1) ... [2022-11-26 00:58:38,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:58:38,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:58:38,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:58:38,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:58:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-26 00:58:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-26 00:58:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:58:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:58:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:58:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:58:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:58:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:58:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:58:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:58:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-26 00:58:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-26 00:58:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:58:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:58:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2022-11-26 00:58:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2022-11-26 00:58:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:58:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-26 00:58:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-26 00:58:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:58:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:58:38,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:58:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:58:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:58:38,998 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:58:39,000 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:58:41,652 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2022-11-26 00:58:41,662 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:58:41,972 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:58:41,973 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-26 00:58:41,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:58:41 BoogieIcfgContainer [2022-11-26 00:58:41,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:58:41,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:58:41,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:58:41,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:58:41,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:58:33" (1/3) ... [2022-11-26 00:58:41,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a16ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:58:41, skipping insertion in model container [2022-11-26 00:58:41,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:58:38" (2/3) ... [2022-11-26 00:58:41,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a16ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:58:41, skipping insertion in model container [2022-11-26 00:58:41,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:58:41" (3/3) ... [2022-11-26 00:58:41,988 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2022-11-26 00:58:42,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:58:42,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:58:42,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:58:42,083 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;@30646df6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:58:42,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:58:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-26 00:58:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-26 00:58:42,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:42,103 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-26 00:58:42,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:58:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1999499499, now seen corresponding path program 1 times [2022-11-26 00:58:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:42,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091597655] [2022-11-26 00:58:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:58:50,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:58:50,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091597655] [2022-11-26 00:58:50,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091597655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:58:50,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:58:50,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-26 00:58:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206385733] [2022-11-26 00:58:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:58:50,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:58:50,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:58:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:58:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:58:50,423 INFO L87 Difference]: Start difference. First operand has 75 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-26 00:58:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:58:54,176 INFO L93 Difference]: Finished difference Result 144 states and 221 transitions. [2022-11-26 00:58:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:58:54,180 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 41 [2022-11-26 00:58:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:58:54,192 INFO L225 Difference]: With dead ends: 144 [2022-11-26 00:58:54,192 INFO L226 Difference]: Without dead ends: 126 [2022-11-26 00:58:54,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-11-26 00:58:54,208 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 76 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:58:54,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 237 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-26 00:58:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-26 00:58:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 93. [2022-11-26 00:58:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.515625) internal successors, (97), 67 states have internal predecessors, (97), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-26 00:58:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2022-11-26 00:58:54,288 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 41 [2022-11-26 00:58:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:58:54,288 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2022-11-26 00:58:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-26 00:58:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2022-11-26 00:58:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-26 00:58:54,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:54,292 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-26 00:58:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:58:54,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:58:54,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1090056852, now seen corresponding path program 1 times [2022-11-26 00:58:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:54,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620559974] [2022-11-26 00:58:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 00:59:03,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620559974] [2022-11-26 00:59:03,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620559974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:59:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657821008] [2022-11-26 00:59:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:03,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:59:03,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:59:03,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:59:03,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f1575b-3f25-4247-84c3-8b16c9032d6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:59:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:04,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-26 00:59:04,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:59:04,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:59:05,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:59:05,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:59:07,519 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-26 00:59:07,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-26 00:59:08,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:08,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:08,158 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-26 00:59:08,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 111 [2022-11-26 00:59:08,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:08,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:08,207 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:59:08,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2022-11-26 00:59:08,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:08,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:59:08,249 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:59:08,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2022-11-26 00:59:08,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:59:08,323 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-26 00:59:08,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:59:08,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-26 00:59:08,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 47 [2022-11-26 00:59:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:59:10,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:59:11,373 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-26 00:59:25,998 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.