./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_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_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/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_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/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_1dc0a635-71f6-444c-8f28-1dafb84008be/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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:22:29,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:22:29,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:22:29,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:22:29,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:22:29,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:22:29,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:22:29,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:22:29,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:22:29,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:22:29,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:22:29,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:22:29,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:22:29,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:22:29,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:22:29,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:22:29,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:22:29,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:22:29,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:22:29,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:22:29,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:22:29,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:22:29,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:22:29,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:22:29,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:22:29,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:22:29,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:22:29,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:22:29,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:22:29,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:22:29,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:22:29,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:22:29,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:22:29,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:22:29,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:22:29,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:22:29,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:22:29,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:22:29,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:22:29,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:22:29,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:22:29,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:22:29,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:22:29,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:22:29,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:22:29,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:22:29,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:22:29,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:22:29,776 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:22:29,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:22:29,777 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:22:29,777 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:22:29,778 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:22:29,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:22:29,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:22:29,779 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:22:29,779 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:22:29,780 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:22:29,780 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:22:29,780 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:22:29,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:22:29,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:22:29,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:22:29,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:22:29,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:22:29,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:22:29,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:22:29,783 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:22:29,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:22:29,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:22:29,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:22:29,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:22:29,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:22:29,785 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:22:29,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:22:29,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:22:29,786 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:22:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:22:29,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:22:29,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:22:29,787 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_1dc0a635-71f6-444c-8f28-1dafb84008be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2022-11-26 00:22:30,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:22:30,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:22:30,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:22:30,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:22:30,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:22:30,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-26 00:22:33,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:22:34,053 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:22:34,054 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-26 00:22:34,112 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/data/7780657ce/a426e55ee2ee4f15acc8428a6f6f6060/FLAG532aca5ed [2022-11-26 00:22:34,128 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/data/7780657ce/a426e55ee2ee4f15acc8428a6f6f6060 [2022-11-26 00:22:34,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:22:34,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:22:34,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:22:34,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:22:34,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:22:34,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:22:34" (1/1) ... [2022-11-26 00:22:34,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e52def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:34, skipping insertion in model container [2022-11-26 00:22:34,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:22:34" (1/1) ... [2022-11-26 00:22:34,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:22:34,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:22:34,544 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_1dc0a635-71f6-444c-8f28-1dafb84008be/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-26 00:22:34,552 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_1dc0a635-71f6-444c-8f28-1dafb84008be/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-26 00:22:35,728 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,730 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,730 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,732 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,733 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,759 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,760 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,762 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,763 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:35,881 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:22:35,882 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:22:35,884 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:22:35,891 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:22:35,894 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:22:35,895 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:22:36,328 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:22:36,329 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:22:36,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:22:36,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:22:36,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:22:36,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:22:36,336 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:22:36,348 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:22:36,349 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:22:36,350 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:22:36,350 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:22:36,647 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:22:36,742 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-26 00:22:36,753 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:22:36,784 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:22:36,793 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:36,794 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:36,857 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:22:36,864 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:22:36,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:22:36,944 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:22:36,960 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_1dc0a635-71f6-444c-8f28-1dafb84008be/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-26 00:22:36,961 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_1dc0a635-71f6-444c-8f28-1dafb84008be/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-26 00:22:37,006 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,007 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,009 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,016 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,017 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,018 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,019 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,026 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:22:37,027 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:22:37,027 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:22:37,031 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:22:37,033 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:22:37,033 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:22:37,056 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:22:37,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:22:37,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:22:37,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:22:37,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:22:37,061 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:22:37,062 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:22:37,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:22:37,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:22:37,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:22:37,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:22:37,088 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:22:37,116 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-26 00:22:37,123 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:22:37,146 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:22:37,153 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,153 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:22:37,187 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:22:37,192 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:22:37,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:22:37,483 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:22:37,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37 WrapperNode [2022-11-26 00:22:37,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:22:37,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:22:37,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:22:37,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:22:37,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,753 INFO L138 Inliner]: procedures = 690, calls = 2739, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2022-11-26 00:22:37,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:22:37,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:22:37,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:22:37,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:22:37,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,817 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:22:37,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:22:37,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:22:37,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:22:37,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (1/1) ... [2022-11-26 00:22:37,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:22:37,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:22:37,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:22:37,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:22:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-26 00:22:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-26 00:22:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:22:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-26 00:22:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-26 00:22:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-11-26 00:22:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-26 00:22:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-26 00:22:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-26 00:22:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:22:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:22:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-26 00:22:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-26 00:22:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-26 00:22:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-26 00:22:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:22:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:22:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:22:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:22:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:22:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:22:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:22:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-26 00:22:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-26 00:22:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-26 00:22:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-26 00:22:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-26 00:22:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-26 00:22:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:22:37,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:22:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-26 00:22:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-26 00:22:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:22:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-26 00:22:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-26 00:22:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:22:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:22:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-11-26 00:22:37,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-11-26 00:22:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-26 00:22:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-26 00:22:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-26 00:22:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-26 00:22:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-26 00:22:37,940 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-26 00:22:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:22:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-11-26 00:22:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-11-26 00:22:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-11-26 00:22:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:22:38,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:22:38,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:22:38,599 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-11-26 00:22:39,962 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:22:40,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:22:40,160 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:22:40,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:22:40 BoogieIcfgContainer [2022-11-26 00:22:40,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:22:40,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:22:40,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:22:40,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:22:40,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:22:34" (1/3) ... [2022-11-26 00:22:40,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afc0e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:22:40, skipping insertion in model container [2022-11-26 00:22:40,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:22:37" (2/3) ... [2022-11-26 00:22:40,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afc0e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:22:40, skipping insertion in model container [2022-11-26 00:22:40,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:22:40" (3/3) ... [2022-11-26 00:22:40,176 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2022-11-26 00:22:40,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:22:40,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:22:40,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:22:40,289 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;@714db6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:22:40,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:22:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-26 00:22:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-26 00:22:40,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:22:40,308 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1] [2022-11-26 00:22:40,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:22:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:22:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 832461079, now seen corresponding path program 1 times [2022-11-26 00:22:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:22:40,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573807313] [2022-11-26 00:22:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:22:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:22:42,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:22:42,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573807313] [2022-11-26 00:22:42,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573807313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:22:42,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:22:42,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:22:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008320306] [2022-11-26 00:22:42,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:22:42,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:22:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:22:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:22:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:22:42,512 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-26 00:22:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:22:42,946 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2022-11-26 00:22:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:22:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2022-11-26 00:22:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:22:42,961 INFO L225 Difference]: With dead ends: 197 [2022-11-26 00:22:42,961 INFO L226 Difference]: Without dead ends: 152 [2022-11-26 00:22:42,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:22:42,967 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 18 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:22:42,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:22:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-26 00:22:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2022-11-26 00:22:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2022-11-26 00:22:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2022-11-26 00:22:43,022 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2022-11-26 00:22:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:22:43,023 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2022-11-26 00:22:43,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-26 00:22:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2022-11-26 00:22:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-26 00:22:43,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:22:43,027 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:22:43,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:22:43,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:22:43,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:22:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash -557245047, now seen corresponding path program 1 times [2022-11-26 00:22:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:22:43,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911104491] [2022-11-26 00:22:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:22:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:22:43,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:22:43,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911104491] [2022-11-26 00:22:43,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911104491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:22:43,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:22:43,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:22:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457795423] [2022-11-26 00:22:43,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:22:43,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:22:43,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:22:43,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:22:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:22:43,610 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-26 00:22:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:22:43,815 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2022-11-26 00:22:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:22:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-11-26 00:22:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:22:43,820 INFO L225 Difference]: With dead ends: 174 [2022-11-26 00:22:43,820 INFO L226 Difference]: Without dead ends: 134 [2022-11-26 00:22:43,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:22:43,822 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:22:43,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 551 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:22:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-26 00:22:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-26 00:22:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-11-26 00:22:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2022-11-26 00:22:43,858 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 68 [2022-11-26 00:22:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:22:43,858 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2022-11-26 00:22:43,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-26 00:22:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2022-11-26 00:22:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-26 00:22:43,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:22:43,868 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:22:43,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:22:43,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:22:43,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:22:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1539866196, now seen corresponding path program 1 times [2022-11-26 00:22:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:22:43,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524747077] [2022-11-26 00:22:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:22:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:22:44,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:22:44,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524747077] [2022-11-26 00:22:44,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524747077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:22:44,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:22:44,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:22:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908612971] [2022-11-26 00:22:44,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:22:44,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:22:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:22:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:22:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:22:44,707 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-26 00:22:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:22:45,256 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-11-26 00:22:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:22:45,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 68 [2022-11-26 00:22:45,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:22:45,259 INFO L225 Difference]: With dead ends: 190 [2022-11-26 00:22:45,259 INFO L226 Difference]: Without dead ends: 154 [2022-11-26 00:22:45,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:22:45,260 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 171 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:22:45,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 861 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:22:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-26 00:22:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2022-11-26 00:22:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-11-26 00:22:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-11-26 00:22:45,278 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 68 [2022-11-26 00:22:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:22:45,279 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-11-26 00:22:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-26 00:22:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-11-26 00:22:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-26 00:22:45,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:22:45,281 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:22:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:22:45,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:22:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:22:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1616400264, now seen corresponding path program 1 times [2022-11-26 00:22:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:22:45,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885826804] [2022-11-26 00:22:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:22:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:22:46,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:22:46,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885826804] [2022-11-26 00:22:46,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885826804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:22:46,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:22:46,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:22:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390920315] [2022-11-26 00:22:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:22:46,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:22:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:22:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:22:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:22:46,058 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-26 00:22:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:22:46,256 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2022-11-26 00:22:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:22:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-11-26 00:22:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:22:46,258 INFO L225 Difference]: With dead ends: 170 [2022-11-26 00:22:46,258 INFO L226 Difference]: Without dead ends: 138 [2022-11-26 00:22:46,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:22:46,260 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:22:46,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 829 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:22:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-26 00:22:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-11-26 00:22:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-26 00:22:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-11-26 00:22:46,274 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2022-11-26 00:22:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:22:46,275 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-11-26 00:22:46,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-26 00:22:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-11-26 00:22:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:22:46,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:22:46,278 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:22:46,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:22:46,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:22:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:22:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1793464088, now seen corresponding path program 1 times [2022-11-26 00:22:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:22:46,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265325940] [2022-11-26 00:22:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:46,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:22:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-26 00:22:48,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:22:48,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265325940] [2022-11-26 00:22:48,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265325940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:22:48,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778109060] [2022-11-26 00:22:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:22:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:22:48,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:22:48,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc0a635-71f6-444c-8f28-1dafb84008be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:22:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-26 00:22:49,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:22:49,373 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 6 treesize of output 5 [2022-11-26 00:22:53,321 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-11-26 00:22:53,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 191 [2022-11-26 00:22:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:22:53,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:23:53,577 WARN L233 SmtUtils]: Spent 52.86s on a formula simplification. DAG size of input: 152 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:23:55,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778109060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:23:55,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1500517666] [2022-11-26 00:23:55,436 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-26 00:23:55,436 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:23:55,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:23:55,447 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:23:55,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:25:00,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-26 00:25:00,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:25:31,720 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3235 for LOIs [2022-11-26 00:25:35,505 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3260 for LOIs [2022-11-26 00:26:17,521 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3306 for LOIs [2022-11-26 00:26:50,180 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:28:01,092 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 3240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:29:10,705 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 3235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)