./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- 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 13:23:40,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:23:40,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:23:40,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:23:40,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:23:40,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:23:40,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:23:40,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:23:40,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:23:40,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:23:40,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:23:40,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:23:40,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:23:40,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:23:40,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:23:40,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:23:40,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:23:40,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:23:40,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:23:40,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:23:40,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:23:40,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:23:40,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:23:40,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:23:40,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:23:40,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:23:40,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:23:40,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:23:40,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:23:40,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:23:40,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:23:40,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:23:40,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:23:40,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:23:40,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:23:40,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:23:40,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:23:40,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:23:40,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:23:40,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:23:40,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:23:40,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 13:23:40,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:23:40,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:23:40,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:23:40,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:23:40,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:23:40,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:23:40,214 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:23:40,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:23:40,214 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:23:40,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:23:40,214 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:23:40,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:23:40,215 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:23:40,215 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:23:40,215 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:23:40,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:23:40,216 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:23:40,216 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:23:40,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:23:40,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:23:40,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:23:40,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:23:40,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:23:40,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:23:40,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:23:40,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:23:40,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:23:40,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:23:40,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:23:40,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:23:40,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:23:40,219 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:23:40,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:23:40,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:23:40,219 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:23:40,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:23:40,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:23:40,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:23:40,220 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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2022-12-14 13:23:40,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:23:40,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:23:40,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:23:40,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:23:40,442 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:23:40,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-12-14 13:23:43,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:23:43,471 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:23:43,472 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-12-14 13:23:43,495 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/data/c2e23f732/c6143f80674948e6af67f56a85384027/FLAGb82a63db2 [2022-12-14 13:23:43,508 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/data/c2e23f732/c6143f80674948e6af67f56a85384027 [2022-12-14 13:23:43,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:23:43,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:23:43,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:23:43,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:23:43,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:23:43,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:23:43" (1/1) ... [2022-12-14 13:23:43,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173de9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:43, skipping insertion in model container [2022-12-14 13:23:43,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:23:43" (1/1) ... [2022-12-14 13:23:43,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:23:43,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:23:43,792 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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-12-14 13:23:43,799 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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-12-14 13:23:44,436 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,437 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,437 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,438 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,439 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,449 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,449 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,451 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,451 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:44,511 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:23:44,512 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:23:44,512 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:23:44,516 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 13:23:44,519 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 13:23:44,519 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 13:23:44,779 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 13:23:44,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 13:23:44,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 13:23:44,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 13:23:44,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 13:23:44,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 13:23:44,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 13:23:44,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 13:23:44,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 13:23:44,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 13:23:44,788 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 13:23:44,923 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 13:23:44,941 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:23:44,960 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 13:23:44,969 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:23:45,007 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,007 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,061 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 13:23:45,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:23:45,109 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:23:45,122 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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-12-14 13:23:45,123 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_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-12-14 13:23:45,155 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,156 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,156 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,156 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,157 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,162 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,162 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,163 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,163 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,169 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:23:45,170 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:23:45,170 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:23:45,173 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 13:23:45,174 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 13:23:45,174 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 13:23:45,191 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 13:23:45,192 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 13:23:45,193 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 13:23:45,193 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 13:23:45,194 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 13:23:45,195 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 13:23:45,195 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 13:23:45,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 13:23:45,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 13:23:45,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 13:23:45,197 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 13:23:45,223 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 13:23:45,234 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:23:45,245 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 13:23:45,250 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:23:45,270 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,271 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:23:45,294 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 13:23:45,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:23:45,467 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:23:45,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45 WrapperNode [2022-12-14 13:23:45,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:23:45,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:23:45,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:23:45,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:23:45,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,577 INFO L138 Inliner]: procedures = 691, calls = 2655, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 920 [2022-12-14 13:23:45,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:23:45,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:23:45,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:23:45,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:23:45,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:23:45,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:23:45,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:23:45,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:23:45,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (1/1) ... [2022-12-14 13:23:45,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:23:45,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:23:45,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:23:45,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:23:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-14 13:23:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-14 13:23:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2022-12-14 13:23:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 13:23:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-12-14 13:23:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 13:23:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 13:23:45,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 13:23:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:23:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-14 13:23:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-14 13:23:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 13:23:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:23:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:23:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 13:23:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 13:23:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 13:23:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 13:23:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 13:23:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-12-14 13:23:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-12-14 13:23:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:23:45,876 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:23:45,877 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:23:46,702 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:23:46,826 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:23:46,826 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:23:46,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:23:46 BoogieIcfgContainer [2022-12-14 13:23:46,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:23:46,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:23:46,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:23:46,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:23:46,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:23:43" (1/3) ... [2022-12-14 13:23:46,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b105cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:23:46, skipping insertion in model container [2022-12-14 13:23:46,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:23:45" (2/3) ... [2022-12-14 13:23:46,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b105cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:23:46, skipping insertion in model container [2022-12-14 13:23:46,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:23:46" (3/3) ... [2022-12-14 13:23:46,834 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2022-12-14 13:23:46,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:23:46,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:23:46,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:23:46,888 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;@7b8d2331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:23:46,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:23:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-12-14 13:23:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 13:23:46,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:23:46,899 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 2, 2, 2, 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] [2022-12-14 13:23:46,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:23:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:23:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash 890773988, now seen corresponding path program 1 times [2022-12-14 13:23:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:23:46,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171140470] [2022-12-14 13:23:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:23:46,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:23:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:23:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-14 13:23:52,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:23:52,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171140470] [2022-12-14 13:23:52,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171140470] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:23:52,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581336861] [2022-12-14 13:23:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:23:52,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:23:52,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:23:52,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:23:52,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:23:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:23:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 115 conjunts are in the unsatisfiable core [2022-12-14 13:23:53,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:23:53,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-12-14 13:23:53,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 13:23:53,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 13:23:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 13:23:54,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:23:54,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581336861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:23:54,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:23:54,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 30 [2022-12-14 13:23:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772610065] [2022-12-14 13:23:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:23:54,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:23:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:23:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:23:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:23:54,097 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-14 13:23:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:23:55,020 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2022-12-14 13:23:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:23:55,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2022-12-14 13:23:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:23:55,029 INFO L225 Difference]: With dead ends: 241 [2022-12-14 13:23:55,029 INFO L226 Difference]: Without dead ends: 119 [2022-12-14 13:23:55,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-12-14 13:23:55,034 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 37 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 13:23:55,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 687 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 13:23:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-14 13:23:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-12-14 13:23:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-12-14 13:23:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2022-12-14 13:23:55,069 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 82 [2022-12-14 13:23:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:23:55,069 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2022-12-14 13:23:55,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-14 13:23:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2022-12-14 13:23:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 13:23:55,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:23:55,072 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 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, 1, 1, 1, 1] [2022-12-14 13:23:55,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:23:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:23:55,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:23:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:23:55,277 INFO L85 PathProgramCache]: Analyzing trace with hash 962392614, now seen corresponding path program 1 times [2022-12-14 13:23:55,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:23:55,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124418443] [2022-12-14 13:23:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:23:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:23:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:23:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-12-14 13:23:58,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:23:58,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124418443] [2022-12-14 13:23:58,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124418443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:23:58,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005077130] [2022-12-14 13:23:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:23:58,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:23:58,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:23:58,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:23:58,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1c8b6-9613-46c3-9a16-bdff48061ab5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:23:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:23:58,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-14 13:23:58,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:23:58,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-12-14 13:23:59,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 13:23:59,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 30 treesize of output 18 [2022-12-14 13:23:59,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 13:23:59,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2022-12-14 13:23:59,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-12-14 13:24:00,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2022-12-14 13:24:03,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 59 treesize of output 51 [2022-12-14 13:24:03,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 51 treesize of output 43 [2022-12-14 13:24:03,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:24:03,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 96 [2022-12-14 13:24:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 58 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 13:24:03,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:24:04,024 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-12-14 13:24:15,205 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.