./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:58:51,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:58:51,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:58:51,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:58:51,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:58:51,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:58:51,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:58:51,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:58:51,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:58:51,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:58:51,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:58:51,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:58:51,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:58:51,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:58:51,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:58:51,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:58:51,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:58:51,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:58:51,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:58:51,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:58:51,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:58:51,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:58:51,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:58:51,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:58:51,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:58:51,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:58:51,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:58:51,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:58:51,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:58:51,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:58:51,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:58:51,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:58:51,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:58:51,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:58:51,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:58:51,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:58:51,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:58:51,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:58:51,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:58:51,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:58:51,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:58:51,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:58:51,814 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:58:51,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:58:51,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:58:51,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:58:51,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:58:51,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:58:51,815 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:58:51,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:58:51,815 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:58:51,815 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:58:51,816 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:58:51,816 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:58:51,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:58:51,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:58:51,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:58:51,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:58:51,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:58:51,819 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_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-12-14 04:58:51,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:58:52,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:58:52,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:58:52,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:58:52,006 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:58:52,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-12-14 04:58:54,642 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:58:54,915 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:58:54,915 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-12-14 04:58:54,933 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/data/7ffac4d19/8e7bd235894e4077b081ce5174485fa3/FLAGc09228a41 [2022-12-14 04:58:54,943 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/data/7ffac4d19/8e7bd235894e4077b081ce5174485fa3 [2022-12-14 04:58:54,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:58:54,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:58:54,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:58:54,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:58:54,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:58:54,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:58:54" (1/1) ... [2022-12-14 04:58:54,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b167186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:54, skipping insertion in model container [2022-12-14 04:58:54,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:58:54" (1/1) ... [2022-12-14 04:58:54,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:58:55,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:58:55,201 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_2bc4aaf2-b427-45f6-a792-50eedd7f549c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-12-14 04:58:55,208 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_2bc4aaf2-b427-45f6-a792-50eedd7f549c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-12-14 04:58:55,835 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:55,849 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:55,856 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,857 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,858 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,858 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,859 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,872 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:55,880 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,880 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,881 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,882 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:55,936 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:58:55,936 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:58:55,937 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:58:55,940 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:58:55,941 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:58:55,941 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:58:56,042 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,156 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:58:56,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:58:56,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:58:56,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:58:56,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:58:56,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:58:56,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:58:56,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:58:56,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:58:56,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:58:56,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:58:56,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:58:56,292 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,293 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,298 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,301 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,302 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,303 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 04:58:56,309 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:58:56,329 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:58:56,334 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,334 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,343 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,360 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,372 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:58:56,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:58:56,403 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:58:56,412 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_2bc4aaf2-b427-45f6-a792-50eedd7f549c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-12-14 04:58:56,412 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_2bc4aaf2-b427-45f6-a792-50eedd7f549c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-12-14 04:58:56,429 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,433 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,435 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,435 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,436 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,436 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,436 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,438 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,441 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,441 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,442 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,442 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,446 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:58:56,446 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:58:56,447 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:58:56,449 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:58:56,450 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:58:56,450 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:58:56,452 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,463 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:58:56,464 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:58:56,465 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:58:56,465 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:58:56,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:58:56,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:58:56,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:58:56,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:58:56,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:58:56,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:58:56,468 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:58:56,492 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:58:56,498 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,498 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,504 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,506 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,507 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,508 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 04:58:56,513 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:58:56,530 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:58:56,536 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,536 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:58:56,544 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,549 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 04:58:56,561 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:58:56,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:58:56,761 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:58:56,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56 WrapperNode [2022-12-14 04:58:56,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:58:56,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:58:56,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:58:56,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:58:56,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,879 INFO L138 Inliner]: procedures = 691, calls = 2503, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 816 [2022-12-14 04:58:56,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:58:56,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:58:56,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:58:56,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:58:56,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:58:56,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:58:56,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:58:56,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:58:56,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (1/1) ... [2022-12-14 04:58:56,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:58:56,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:56,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:58:56,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:58:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 04:58:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 04:58:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:58:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 04:58:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 04:58:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:58:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:58:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-12-14 04:58:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:58:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 04:58:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-14 04:58:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 04:58:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:58:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 04:58:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 04:58:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:58:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-12-14 04:58:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-12-14 04:58:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-12-14 04:58:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-12-14 04:58:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:58:57,188 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:58:57,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:58:57,918 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:58:58,094 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:58:58,094 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:58:58,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:58:58 BoogieIcfgContainer [2022-12-14 04:58:58,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:58:58,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:58:58,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:58:58,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:58:58,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:58:54" (1/3) ... [2022-12-14 04:58:58,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dc2e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:58:58, skipping insertion in model container [2022-12-14 04:58:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:58:56" (2/3) ... [2022-12-14 04:58:58,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dc2e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:58:58, skipping insertion in model container [2022-12-14 04:58:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:58:58" (3/3) ... [2022-12-14 04:58:58,102 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-12-14 04:58:58,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:58:58,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:58:58,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:58:58,156 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;@d0b213d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:58:58,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:58:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-14 04:58:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 04:58:58,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:58,166 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:58,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash -152620430, now seen corresponding path program 1 times [2022-12-14 04:58:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:58,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062652979] [2022-12-14 04:58:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:58,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 04:59:00,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:00,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062652979] [2022-12-14 04:59:00,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062652979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:59:00,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:59:00,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:59:00,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225072697] [2022-12-14 04:59:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:59:00,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:59:00,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:59:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:59:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:59:00,903 INFO L87 Difference]: Start difference. First operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 04:59:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:59:02,530 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2022-12-14 04:59:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 04:59:02,532 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 50 [2022-12-14 04:59:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:59:02,540 INFO L225 Difference]: With dead ends: 124 [2022-12-14 04:59:02,540 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 04:59:02,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:59:02,546 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 36 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:59:02,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 451 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 04:59:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 04:59:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-14 04:59:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-12-14 04:59:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-12-14 04:59:02,593 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 50 [2022-12-14 04:59:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:59:02,594 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-12-14 04:59:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 04:59:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-12-14 04:59:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 04:59:02,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:59:02,597 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:59:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:59:02,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:59:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:59:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 231625772, now seen corresponding path program 1 times [2022-12-14 04:59:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:59:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972134377] [2022-12-14 04:59:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:59:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 04:59:07,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:59:07,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972134377] [2022-12-14 04:59:07,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972134377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:59:07,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512185647] [2022-12-14 04:59:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:59:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:59:07,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:59:07,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:59:07,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc4aaf2-b427-45f6-a792-50eedd7f549c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:59:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:59:07,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-14 04:59:07,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:59:08,103 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 11 treesize of output 7 [2022-12-14 04:59:10,130 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:59:10,134 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:59:10,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-14 04:59:10,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 04:59:10,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2022-12-14 04:59:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 04:59:10,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:59:12,995 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 05:05:31,538 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.