./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 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_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/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_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/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_ed31e43b-e582-4721-aecb-46f7088fcf54/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_ed31e43b-e582-4721-aecb-46f7088fcf54/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 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-38b53e6 [2022-11-25 23:59:51,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:59:51,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:59:51,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:59:51,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:59:51,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:59:51,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:59:51,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:59:51,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:59:51,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:59:51,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:59:51,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:59:51,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:59:51,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:59:51,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:59:51,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:59:51,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:59:51,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:59:51,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:59:51,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:59:51,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:59:51,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:59:51,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:59:51,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:59:51,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:59:51,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:59:51,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:59:51,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:59:51,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:59:51,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:59:51,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:59:51,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:59:51,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:59:51,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:59:51,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:59:51,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:59:51,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:59:51,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:59:51,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:59:51,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:59:51,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:59:51,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:59:51,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:59:51,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:59:51,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:59:51,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:59:51,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:59:51,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:59:51,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:59:51,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:59:51,937 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:59:51,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:59:51,939 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:59:51,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:59:51,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:59:51,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:59:51,940 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:59:51,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:59:51,941 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:59:51,941 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:59:51,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:59:51,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:59:51,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:59:51,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:59:51,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:59:51,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:59:51,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:59:51,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:59:51,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:59:51,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:59:51,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:59:51,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:59:51,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:59:51,945 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:59:51,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:59:51,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:59:51,946 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:59:51,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:59:51,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:59:51,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:59:51,947 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_ed31e43b-e582-4721-aecb-46f7088fcf54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 [2022-11-25 23:59:52,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:59:52,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:59:52,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:59:52,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:59:52,274 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:59:52,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-11-25 23:59:55,363 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:59:56,014 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:59:56,014 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-11-25 23:59:56,054 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/data/94ba2f788/3f203bcb530d4a36a00a647d8f453aec/FLAG8898498b8 [2022-11-25 23:59:56,070 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/data/94ba2f788/3f203bcb530d4a36a00a647d8f453aec [2022-11-25 23:59:56,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:59:56,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:59:56,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:59:56,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:59:56,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:59:56,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:59:56" (1/1) ... [2022-11-25 23:59:56,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a0c39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:56, skipping insertion in model container [2022-11-25 23:59:56,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:59:56" (1/1) ... [2022-11-25 23:59:56,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:59:56,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:59:56,508 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_ed31e43b-e582-4721-aecb-46f7088fcf54/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-11-25 23:59:56,522 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_ed31e43b-e582-4721-aecb-46f7088fcf54/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-11-25 23:59:57,781 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:57,819 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:57,840 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,841 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,842 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,843 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,846 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,862 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:57,876 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,879 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,882 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:57,883 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:58,004 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:59:58,005 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:59:58,006 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:59:58,011 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:59:58,013 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:59:58,014 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:59:58,241 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:58,500 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:59:58,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:59:58,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:59:58,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:59:58,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:59:58,509 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:59:58,510 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:59:58,511 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:59:58,512 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:59:58,513 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:59:58,514 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:59:58,803 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:59:58,869 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:58,871 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:58,883 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:58,887 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:58,888 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:58,890 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:59:58,903 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:59:58,950 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:59:58,961 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:58,961 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:58,979 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,008 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,059 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:59:59,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:59:59,122 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:59:59,155 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_ed31e43b-e582-4721-aecb-46f7088fcf54/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-11-25 23:59:59,156 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_ed31e43b-e582-4721-aecb-46f7088fcf54/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-11-25 23:59:59,225 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,235 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,241 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,241 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,242 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,243 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,244 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,257 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,266 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,267 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,268 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,269 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,283 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:59:59,284 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:59:59,285 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:59:59,291 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:59:59,297 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:59:59,298 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:59:59,303 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,332 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:59:59,333 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:59:59,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:59:59,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:59:59,336 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:59:59,338 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:59:59,338 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:59:59,339 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:59:59,340 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:59:59,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:59:59,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:59:59,369 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:59:59,406 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,408 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,416 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,421 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,425 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,426 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:59:59,440 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:59:59,470 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:59:59,486 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,487 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:59:59,501 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,517 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 23:59:59,548 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:59:59,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:59:59,882 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:59:59,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59 WrapperNode [2022-11-25 23:59:59,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:59:59,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:59:59,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:59:59,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:59:59,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,080 INFO L138 Inliner]: procedures = 691, calls = 2613, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 795 [2022-11-26 00:00:00,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:00:00,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:00:00,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:00:00,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:00:00,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:00:00,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:00:00,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:00:00,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:00:00,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (1/1) ... [2022-11-26 00:00:00,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:00:00,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:00,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:00:00,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:00:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-26 00:00:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-26 00:00:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:00:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-26 00:00:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-26 00:00:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:00:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:00:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:00:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-11-26 00:00:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-11-26 00:00:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:00:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:00:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:00:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:00:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:00:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-26 00:00:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-26 00:00:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:00:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:00:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:00:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:00:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:00:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-26 00:00:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-26 00:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-26 00:00:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-26 00:00:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:00:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-26 00:00:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-26 00:00:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-26 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-26 00:00:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:00:00,690 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:00:00,693 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:00:02,244 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:00:02,703 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:00:02,703 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:00:02,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:02 BoogieIcfgContainer [2022-11-26 00:00:02,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:00:02,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:00:02,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:00:02,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:00:02,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:59:56" (1/3) ... [2022-11-26 00:00:02,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe0b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:02, skipping insertion in model container [2022-11-26 00:00:02,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:59:59" (2/3) ... [2022-11-26 00:00:02,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe0b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:02, skipping insertion in model container [2022-11-26 00:00:02,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:02" (3/3) ... [2022-11-26 00:00:02,721 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness.i [2022-11-26 00:00:02,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:00:02,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:00:02,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:00:02,821 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;@1a5cd382, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:00:02,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:00:02,827 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) [2022-11-26 00:00:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-26 00:00:02,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:02,837 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] [2022-11-26 00:00:02,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:00:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 410522729, now seen corresponding path program 1 times [2022-11-26 00:00:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:02,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421815676] [2022-11-26 00:00:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:02,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-26 00:00:07,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:07,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421815676] [2022-11-26 00:00:07,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421815676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:07,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:00:07,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:00:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733868199] [2022-11-26 00:00:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:07,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:00:07,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:00:07,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:00:07,483 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) [2022-11-26 00:00:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:08,948 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2022-11-26 00:00:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:00:08,951 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 [2022-11-26 00:00:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:08,960 INFO L225 Difference]: With dead ends: 101 [2022-11-26 00:00:08,961 INFO L226 Difference]: Without dead ends: 68 [2022-11-26 00:00:08,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:00:08,968 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 25 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:08,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 322 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 00:00:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-26 00:00:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-26 00:00:09,020 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) [2022-11-26 00:00:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-11-26 00:00:09,025 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 43 [2022-11-26 00:00:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:09,027 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-11-26 00:00:09,027 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) [2022-11-26 00:00:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-11-26 00:00:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-26 00:00:09,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:09,031 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] [2022-11-26 00:00:09,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:00:09,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:00:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1275170069, now seen corresponding path program 1 times [2022-11-26 00:00:09,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:09,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290524782] [2022-11-26 00:00:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:09,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:00:17,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290524782] [2022-11-26 00:00:17,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290524782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042420518] [2022-11-26 00:00:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:17,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:17,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:17,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed31e43b-e582-4721-aecb-46f7088fcf54/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:00:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:17,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-26 00:00:17,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:18,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:00:21,744 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:00:21,758 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:00:21,775 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:00:21,782 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:00:22,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-26 00:00:22,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:00:22,493 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 [2022-11-26 00:00:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:00:22,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:26,288 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-26 00:08:24,461 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.