./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V --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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:04,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:04,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:04,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:04,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:04,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:04,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:04,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:04,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:04,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:04,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:04,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:04,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:04,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:04,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:04,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:04,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:04,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:04,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:04,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:04,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:04,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:04,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:04,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:04,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:04,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:04,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:04,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:04,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:04,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:04,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:04,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:04,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:04,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:04,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:04,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:04,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:04,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:04,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:04,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:04,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:04,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:16:05,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:05,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:05,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:05,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:05,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:05,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:05,017 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:05,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:05,017 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:05,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:05,018 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:05,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:05,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:05,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:05,019 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:05,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:05,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:05,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:05,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:05,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:05,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:05,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:05,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:05,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:05,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:05,021 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:05,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:05,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:05,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:05,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:05,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:05,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:05,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:05,023 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:05,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:05,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:05,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:05,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:05,024 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-23 02:16:05,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:05,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:05,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:05,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:05,327 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:05,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-23 02:16:05,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/32001ec1b/a9fe2b0a52ae43c88b7d2200bb5fe136/FLAG95fe1dabb [2021-11-23 02:16:06,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:06,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-23 02:16:06,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/32001ec1b/a9fe2b0a52ae43c88b7d2200bb5fe136/FLAG95fe1dabb [2021-11-23 02:16:06,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/32001ec1b/a9fe2b0a52ae43c88b7d2200bb5fe136 [2021-11-23 02:16:06,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:06,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:06,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:06,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:06,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:06,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:06" (1/1) ... [2021-11-23 02:16:06,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f192d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:06, skipping insertion in model container [2021-11-23 02:16:06,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:06" (1/1) ... [2021-11-23 02:16:06,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:06,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:07,306 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-23 02:16:07,315 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-23 02:16:08,839 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,840 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,841 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,841 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,842 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:08,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:09,581 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:09,583 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:09,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:09,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:09,587 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:09,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:09,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:09,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:09,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:09,594 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:09,859 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:09,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:09,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,425 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,510 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,510 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:10,645 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:10,658 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-23 02:16:10,659 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-23 02:16:10,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,728 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:10,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:10,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:10,730 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:10,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:10,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:10,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:10,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:10,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:10,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:10,751 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:10,832 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,832 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:10,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:11,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:11,401 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:11,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11 WrapperNode [2021-11-23 02:16:11,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:11,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:11,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:11,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:11,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,691 INFO L137 Inliner]: procedures = 768, calls = 3253, calls flagged for inlining = 78, calls inlined = 5, statements flattened = 337 [2021-11-23 02:16:11,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:11,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:11,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:11,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:11,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:11,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:11,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:11,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:11,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (1/1) ... [2021-11-23 02:16:11,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:11,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:11,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:11,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 02:16:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 02:16:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:16:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:16:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:16:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:16:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 02:16:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 02:16:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:16:11,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:16:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:16:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 02:16:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 02:16:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2021-11-23 02:16:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2021-11-23 02:16:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-23 02:16:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-23 02:16:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:16:12,347 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:12,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:12,686 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-23 02:16:12,697 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:12,741 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:12,741 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:16:12,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:12 BoogieIcfgContainer [2021-11-23 02:16:12,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:12,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:12,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:12,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:12,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:06" (1/3) ... [2021-11-23 02:16:12,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2785286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:12, skipping insertion in model container [2021-11-23 02:16:12,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:11" (2/3) ... [2021-11-23 02:16:12,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2785286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:12, skipping insertion in model container [2021-11-23 02:16:12,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:12" (3/3) ... [2021-11-23 02:16:12,755 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-23 02:16:12,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:12,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:16:12,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:12,827 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:16:12,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:16:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:16:12,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 02:16:12,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:12,857 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:16:12,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:12,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2007445460, now seen corresponding path program 1 times [2021-11-23 02:16:12,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:12,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083602003] [2021-11-23 02:16:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:12,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:16:13,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083602003] [2021-11-23 02:16:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083602003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:13,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:13,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:16:13,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442652922] [2021-11-23 02:16:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:13,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:16:13,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:16:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:13,487 INFO L87 Difference]: Start difference. First operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-23 02:16:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:13,575 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2021-11-23 02:16:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:16:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 50 [2021-11-23 02:16:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:13,589 INFO L225 Difference]: With dead ends: 85 [2021-11-23 02:16:13,590 INFO L226 Difference]: Without dead ends: 57 [2021-11-23 02:16:13,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:13,602 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:13,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-23 02:16:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-23 02:16:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-11-23 02:16:13,667 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 50 [2021-11-23 02:16:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:13,671 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-11-23 02:16:13,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-23 02:16:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-11-23 02:16:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 02:16:13,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:13,679 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:13,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:16:13,679 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1782800097, now seen corresponding path program 1 times [2021-11-23 02:16:13,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:13,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195167436] [2021-11-23 02:16:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:13,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:16:14,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:14,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195167436] [2021-11-23 02:16:14,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195167436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:14,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:14,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 02:16:14,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045438891] [2021-11-23 02:16:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:14,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:16:14,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:16:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:16:14,166 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-23 02:16:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:14,441 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2021-11-23 02:16:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:16:14,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 52 [2021-11-23 02:16:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:14,445 INFO L225 Difference]: With dead ends: 78 [2021-11-23 02:16:14,445 INFO L226 Difference]: Without dead ends: 57 [2021-11-23 02:16:14,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:16:14,448 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 28 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:14,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 517 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-23 02:16:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-23 02:16:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-23 02:16:14,471 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 52 [2021-11-23 02:16:14,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:14,472 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-23 02:16:14,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-23 02:16:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-23 02:16:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 02:16:14,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:14,479 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:14,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:16:14,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:14,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash 17086336, now seen corresponding path program 1 times [2021-11-23 02:16:14,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:14,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673172442] [2021-11-23 02:16:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:14,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-23 02:16:14,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:14,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673172442] [2021-11-23 02:16:14,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673172442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:14,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:14,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 02:16:14,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644391971] [2021-11-23 02:16:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:14,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 02:16:14,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 02:16:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:16:14,995 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-23 02:16:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:15,365 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2021-11-23 02:16:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:16:15,366 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 56 [2021-11-23 02:16:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:15,368 INFO L225 Difference]: With dead ends: 86 [2021-11-23 02:16:15,368 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 02:16:15,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:15,370 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:15,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 727 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 02:16:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-11-23 02:16:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 41 states have internal predecessors, (41), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:16:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-23 02:16:15,397 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 56 [2021-11-23 02:16:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:15,399 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-23 02:16:15,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-23 02:16:15,400 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-23 02:16:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:16:15,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:15,408 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-23 02:16:15,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:16:15,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1027398026, now seen corresponding path program 1 times [2021-11-23 02:16:15,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:15,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208713571] [2021-11-23 02:16:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:15,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 02:16:15,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:15,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208713571] [2021-11-23 02:16:15,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208713571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:15,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:15,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 02:16:15,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755628919] [2021-11-23 02:16:15,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:15,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:16:15,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:16:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:16:15,999 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-23 02:16:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:16,390 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-11-23 02:16:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:16:16,391 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 64 [2021-11-23 02:16:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:16,393 INFO L225 Difference]: With dead ends: 90 [2021-11-23 02:16:16,393 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 02:16:16,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:16:16,394 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 41 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:16,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 656 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 02:16:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2021-11-23 02:16:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 47 states have internal predecessors, (47), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-23 02:16:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-23 02:16:16,413 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 64 [2021-11-23 02:16:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:16,414 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-23 02:16:16,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-23 02:16:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-23 02:16:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:16:16,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:16,416 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:16:16,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:16:16,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1591579472, now seen corresponding path program 1 times [2021-11-23 02:16:16,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:16,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087682435] [2021-11-23 02:16:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:16,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-23 02:16:16,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087682435] [2021-11-23 02:16:16,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087682435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:16,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:16,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 02:16:16,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134532333] [2021-11-23 02:16:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:16:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:16:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:16:16,747 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 02:16:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:17,140 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2021-11-23 02:16:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:16:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) Word has length 79 [2021-11-23 02:16:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:17,143 INFO L225 Difference]: With dead ends: 94 [2021-11-23 02:16:17,143 INFO L226 Difference]: Without dead ends: 92 [2021-11-23 02:16:17,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:16:17,145 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 13 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:17,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1025 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:16:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-23 02:16:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2021-11-23 02:16:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 50 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-23 02:16:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2021-11-23 02:16:17,161 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 79 [2021-11-23 02:16:17,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:17,161 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2021-11-23 02:16:17,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 02:16:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2021-11-23 02:16:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:16:17,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:17,163 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:16:17,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:16:17,164 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash -886361530, now seen corresponding path program 1 times [2021-11-23 02:16:17,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:17,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233060583] [2021-11-23 02:16:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:17,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-23 02:16:17,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:17,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233060583] [2021-11-23 02:16:17,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233060583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:17,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:17,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 02:16:17,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613062018] [2021-11-23 02:16:17,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:17,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:16:17,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:16:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:16:17,730 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-23 02:16:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:18,001 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2021-11-23 02:16:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:16:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-11-23 02:16:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:18,005 INFO L225 Difference]: With dead ends: 92 [2021-11-23 02:16:18,005 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 02:16:18,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:18,007 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 26 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:18,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 558 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 02:16:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2021-11-23 02:16:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-11-23 02:16:18,021 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 87 [2021-11-23 02:16:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:18,022 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-11-23 02:16:18,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-23 02:16:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-11-23 02:16:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:16:18,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:18,024 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 3, 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] [2021-11-23 02:16:18,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:16:18,024 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:18,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1344876461, now seen corresponding path program 1 times [2021-11-23 02:16:18,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:18,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853956950] [2021-11-23 02:16:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:18,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-23 02:16:18,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:18,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853956950] [2021-11-23 02:16:18,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853956950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:18,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:18,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 02:16:18,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153281753] [2021-11-23 02:16:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:18,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:16:18,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:16:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:16:18,744 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-23 02:16:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:19,068 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-11-23 02:16:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:16:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 78 [2021-11-23 02:16:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:19,070 INFO L225 Difference]: With dead ends: 94 [2021-11-23 02:16:19,070 INFO L226 Difference]: Without dead ends: 63 [2021-11-23 02:16:19,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:19,072 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 37 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:19,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 691 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-23 02:16:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-23 02:16:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.0) internal successors, (35), 35 states have internal predecessors, (35), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2021-11-23 02:16:19,083 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 78 [2021-11-23 02:16:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:19,084 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2021-11-23 02:16:19,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-23 02:16:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2021-11-23 02:16:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 02:16:19,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:19,086 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:16:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:16:19,087 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -228044931, now seen corresponding path program 1 times [2021-11-23 02:16:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091160594] [2021-11-23 02:16:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:19,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:16:19,398 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:16:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:16:19,795 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:16:19,795 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:16:19,797 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:16:19,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:16:19,802 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:19,807 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:16:19,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:16:19 BoogieIcfgContainer [2021-11-23 02:16:19,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:16:19,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:16:19,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:16:19,911 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:16:19,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:12" (3/4) ... [2021-11-23 02:16:19,915 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:16:19,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:16:19,916 INFO L158 Benchmark]: Toolchain (without parser) took 13168.52ms. Allocated memory was 90.2MB in the beginning and 216.0MB in the end (delta: 125.8MB). Free memory was 59.2MB in the beginning and 50.0MB in the end (delta: 9.2MB). Peak memory consumption was 133.5MB. Max. memory is 16.1GB. [2021-11-23 02:16:19,917 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 67.7MB in the beginning and 67.6MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:16:19,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4652.99ms. Allocated memory was 90.2MB in the beginning and 140.5MB in the end (delta: 50.3MB). Free memory was 58.9MB in the beginning and 65.3MB in the end (delta: -6.4MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. [2021-11-23 02:16:19,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 289.02ms. Allocated memory is still 140.5MB. Free memory was 64.6MB in the beginning and 54.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:16:19,918 INFO L158 Benchmark]: Boogie Preprocessor took 98.24ms. Allocated memory is still 140.5MB. Free memory was 54.1MB in the beginning and 49.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:16:19,918 INFO L158 Benchmark]: RCFGBuilder took 952.51ms. Allocated memory is still 140.5MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 143.2kB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-23 02:16:19,919 INFO L158 Benchmark]: TraceAbstraction took 7164.29ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 49.8MB in the beginning and 50.0MB in the end (delta: -162.3kB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. [2021-11-23 02:16:19,919 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 216.0MB. Free memory is still 50.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:16:19,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 67.7MB in the beginning and 67.6MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4652.99ms. Allocated memory was 90.2MB in the beginning and 140.5MB in the end (delta: 50.3MB). Free memory was 58.9MB in the beginning and 65.3MB in the end (delta: -6.4MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 289.02ms. Allocated memory is still 140.5MB. Free memory was 64.6MB in the beginning and 54.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.24ms. Allocated memory is still 140.5MB. Free memory was 54.1MB in the beginning and 49.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 952.51ms. Allocated memory is still 140.5MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 143.2kB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7164.29ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 49.8MB in the beginning and 50.0MB in the end (delta: -162.3kB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 216.0MB. Free memory is still 50.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=-36893488147419103231, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={-2:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str[cap - 1]=0] [L6839] return str; [L11318] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-2:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=-18446744073709551615, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={-3:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str[cap - 1]=0] [L6839] return str; [L11319] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10794] RET, EXPR aws_c_string_is_valid(a) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10795] RET, EXPR aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10799] RET, EXPR aws_c_string_is_valid(a) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10799] RET, EXPR aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] return rval; VAL [\result=1, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7113] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, nondet_uint64_t()=-18410715276690587651, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, i=36028797018963965, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] EXPR a[i] [L7123] EXPR b[i] VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, a[i]=-4, b={-3:0}, b={-3:0}, b[i]=0, i=36028797018963965, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 4242 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4167 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1453 IncrementalHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 441 mSDtfsCounter, 1453 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=5, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 567 NumberOfCodeBlocks, 567 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 334/334 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:16:19,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V --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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:22,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:22,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:22,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:22,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:22,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:22,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:22,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:22,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:22,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:22,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:22,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:22,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:22,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:22,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:22,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:22,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:22,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:22,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:22,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:22,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:22,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:22,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:22,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:22,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:22,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:22,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:22,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:22,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:22,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:22,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:22,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:22,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:22,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:22,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:22,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:22,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:22,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:22,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:22,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:22,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:22,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-23 02:16:22,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:22,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:22,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:22,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:22,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:22,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:22,822 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:22,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:22,823 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:22,823 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:22,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:22,825 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:22,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:22,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:22,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:22,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:22,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:22,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:16:22,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:16:22,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:16:22,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:22,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:22,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:22,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:22,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:16:22,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:22,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:22,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:22,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:22,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:22,830 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:16:22,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:16:22,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:22,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:22,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:22,832 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-23 02:16:23,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:23,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:23,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:23,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:23,233 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:23,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-23 02:16:23,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/5fd83eae3/b29a6b2bc7a748e0bb7e964075ef6a6d/FLAG148c28e98 [2021-11-23 02:16:24,390 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:24,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-23 02:16:24,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/5fd83eae3/b29a6b2bc7a748e0bb7e964075ef6a6d/FLAG148c28e98 [2021-11-23 02:16:24,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/data/5fd83eae3/b29a6b2bc7a748e0bb7e964075ef6a6d [2021-11-23 02:16:24,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:24,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:24,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:24,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:24,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:24,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:24" (1/1) ... [2021-11-23 02:16:24,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dbfebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:24, skipping insertion in model container [2021-11-23 02:16:24,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:24" (1/1) ... [2021-11-23 02:16:24,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:25,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:25,447 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-23 02:16:25,459 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-23 02:16:27,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:27,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:27,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:27,998 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:27,999 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:28,001 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:28,002 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:28,003 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:28,004 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:28,005 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:28,005 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:28,320 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:28,491 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,492 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:28,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:29,091 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:16:29,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:29,187 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-23 02:16:29,188 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-23 02:16:29,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:29,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:29,325 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:29,326 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:29,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:29,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:29,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:29,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:29,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:29,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:29,356 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:29,437 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,440 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,586 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:29,724 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:29,752 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-23 02:16:29,752 WARN L230 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_31c9bb4d-0242-48d4-b598-00a0a944fc60/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-23 02:16:29,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,789 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,795 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,795 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,893 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:29,894 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:29,894 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:29,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:29,896 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:29,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:29,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:29,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:29,898 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:29,898 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:29,917 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:29,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:29,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:30,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:30,422 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:30,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30 WrapperNode [2021-11-23 02:16:30,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:30,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:30,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:30,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:30,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,658 INFO L137 Inliner]: procedures = 788, calls = 3253, calls flagged for inlining = 80, calls inlined = 5, statements flattened = 338 [2021-11-23 02:16:30,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:30,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:30,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:30,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:30,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:30,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:30,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:30,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:30,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (1/1) ... [2021-11-23 02:16:30,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:30,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:30,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:30,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 02:16:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 02:16:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:16:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:16:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:16:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 02:16:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 02:16:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 02:16:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 02:16:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:16:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:16:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:16:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:16:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:16:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2021-11-23 02:16:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2021-11-23 02:16:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-23 02:16:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-23 02:16:31,237 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:31,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:31,740 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-23 02:16:31,760 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:31,772 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:31,772 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:16:31,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:31 BoogieIcfgContainer [2021-11-23 02:16:31,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:31,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:31,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:31,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:31,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:24" (1/3) ... [2021-11-23 02:16:31,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe6ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:31, skipping insertion in model container [2021-11-23 02:16:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:30" (2/3) ... [2021-11-23 02:16:31,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe6ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:31, skipping insertion in model container [2021-11-23 02:16:31,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:31" (3/3) ... [2021-11-23 02:16:31,784 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-23 02:16:31,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:31,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:16:31,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:31,869 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:16:31,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:16:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:16:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:16:31,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:31,900 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-23 02:16:31,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:31,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:31,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1163022186, now seen corresponding path program 1 times [2021-11-23 02:16:31,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:31,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061127687] [2021-11-23 02:16:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:31,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:31,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:31,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:31,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:16:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:32,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:16:32,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-23 02:16:32,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-23 02:16:32,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:32,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061127687] [2021-11-23 02:16:32,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061127687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:32,702 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:32,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:16:32,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906571826] [2021-11-23 02:16:32,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:32,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:16:32,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:16:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:32,741 INFO L87 Difference]: Start difference. First operand has 71 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-23 02:16:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:32,772 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2021-11-23 02:16:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:16:32,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 67 [2021-11-23 02:16:32,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:32,783 INFO L225 Difference]: With dead ends: 139 [2021-11-23 02:16:32,784 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:16:32,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:32,791 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:32,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:16:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-23 02:16:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 39 states have internal predecessors, (41), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-11-23 02:16:32,848 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 67 [2021-11-23 02:16:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:32,850 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-11-23 02:16:32,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-23 02:16:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-11-23 02:16:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:16:32,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:32,855 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:32,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 02:16:33,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:33,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash -447828983, now seen corresponding path program 1 times [2021-11-23 02:16:33,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:33,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319863556] [2021-11-23 02:16:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:33,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:33,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:33,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:16:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:33,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 02:16:33,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-23 02:16:33,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-23 02:16:34,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:34,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319863556] [2021-11-23 02:16:34,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319863556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:34,242 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:34,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 14 [2021-11-23 02:16:34,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062951978] [2021-11-23 02:16:34,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:34,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:16:34,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:34,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:16:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:16:34,246 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-23 02:16:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:34,626 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2021-11-23 02:16:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:16:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) Word has length 70 [2021-11-23 02:16:34,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:34,631 INFO L225 Difference]: With dead ends: 89 [2021-11-23 02:16:34,631 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:16:34,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:34,634 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 32 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:34,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 722 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:16:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:16:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-23 02:16:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-11-23 02:16:34,649 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 70 [2021-11-23 02:16:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:34,650 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-11-23 02:16:34,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-23 02:16:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-11-23 02:16:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 02:16:34,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:34,655 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:34,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:34,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:34,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1505925942, now seen corresponding path program 1 times [2021-11-23 02:16:34,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:34,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120068518] [2021-11-23 02:16:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:34,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:34,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:34,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:34,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:16:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:35,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:16:35,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 02:16:35,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 02:16:36,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:36,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120068518] [2021-11-23 02:16:36,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120068518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:36,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:36,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 19 [2021-11-23 02:16:36,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174448178] [2021-11-23 02:16:36,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:36,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 02:16:36,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:36,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 02:16:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:16:36,026 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 13 states have internal predecessors, (37), 5 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-23 02:16:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:36,670 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2021-11-23 02:16:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:16:36,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 13 states have internal predecessors, (37), 5 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) Word has length 75 [2021-11-23 02:16:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:36,673 INFO L225 Difference]: With dead ends: 94 [2021-11-23 02:16:36,674 INFO L226 Difference]: Without dead ends: 92 [2021-11-23 02:16:36,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:16:36,675 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 39 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:36,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1179 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:16:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-23 02:16:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2021-11-23 02:16:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 49 states have internal predecessors, (49), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:16:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-23 02:16:36,695 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 75 [2021-11-23 02:16:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:36,696 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-23 02:16:36,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 13 states have internal predecessors, (37), 5 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-23 02:16:36,696 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-23 02:16:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:16:36,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:36,699 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2021-11-23 02:16:36,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:36,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:36,908 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -892933696, now seen corresponding path program 1 times [2021-11-23 02:16:36,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:36,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408106089] [2021-11-23 02:16:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:36,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:36,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:36,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:36,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:16:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:37,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 02:16:37,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-23 02:16:37,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-23 02:16:38,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:38,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408106089] [2021-11-23 02:16:38,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408106089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:38,171 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:38,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-11-23 02:16:38,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230762763] [2021-11-23 02:16:38,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:38,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 02:16:38,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 02:16:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:38,174 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 18 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 7 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-23 02:16:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:38,664 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2021-11-23 02:16:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:16:38,665 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 7 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) Word has length 83 [2021-11-23 02:16:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:38,668 INFO L225 Difference]: With dead ends: 98 [2021-11-23 02:16:38,668 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 02:16:38,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:16:38,670 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:38,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 920 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:16:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 02:16:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-11-23 02:16:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 55 states have internal predecessors, (55), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-23 02:16:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-11-23 02:16:38,698 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 83 [2021-11-23 02:16:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:38,702 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-11-23 02:16:38,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 7 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-23 02:16:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-11-23 02:16:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 02:16:38,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:38,710 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:16:38,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:38,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:38,929 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash 829878033, now seen corresponding path program 1 times [2021-11-23 02:16:38,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:38,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708540967] [2021-11-23 02:16:38,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:38,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:38,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:38,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:38,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:16:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:39,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:16:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-23 02:16:39,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-23 02:16:40,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:40,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708540967] [2021-11-23 02:16:40,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708540967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:40,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:40,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 18 [2021-11-23 02:16:40,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509981890] [2021-11-23 02:16:40,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:40,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 02:16:40,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 02:16:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:16:40,006 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:16:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:40,441 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-11-23 02:16:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:16:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) Word has length 107 [2021-11-23 02:16:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:40,444 INFO L225 Difference]: With dead ends: 102 [2021-11-23 02:16:40,444 INFO L226 Difference]: Without dead ends: 100 [2021-11-23 02:16:40,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:16:40,446 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 15 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:40,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 1468 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:16:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-23 02:16:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-11-23 02:16:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 58 states have internal predecessors, (58), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-23 02:16:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2021-11-23 02:16:40,462 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 107 [2021-11-23 02:16:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:40,463 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2021-11-23 02:16:40,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:16:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2021-11-23 02:16:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 02:16:40,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:40,466 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:16:40,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:40,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:40,686 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash 265370887, now seen corresponding path program 1 times [2021-11-23 02:16:40,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:40,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6651825] [2021-11-23 02:16:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:40,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:40,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:40,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:16:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:40,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 02:16:40,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-23 02:16:41,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-23 02:16:42,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6651825] [2021-11-23 02:16:42,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6651825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:42,027 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:42,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 16 [2021-11-23 02:16:42,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508796506] [2021-11-23 02:16:42,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:42,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:16:42,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:42,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:16:42,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:16:42,032 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 11 states have internal predecessors, (39), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-23 02:16:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:42,441 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2021-11-23 02:16:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:16:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 11 states have internal predecessors, (39), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 115 [2021-11-23 02:16:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:42,445 INFO L225 Difference]: With dead ends: 100 [2021-11-23 02:16:42,445 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 02:16:42,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:16:42,447 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 23 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:42,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 862 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:16:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 02:16:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2021-11-23 02:16:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-11-23 02:16:42,463 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 115 [2021-11-23 02:16:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:42,464 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-11-23 02:16:42,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 11 states have internal predecessors, (39), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-23 02:16:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-11-23 02:16:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 02:16:42,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:42,467 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 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] [2021-11-23 02:16:42,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:42,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:42,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -565706850, now seen corresponding path program 1 times [2021-11-23 02:16:42,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:42,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813138928] [2021-11-23 02:16:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:42,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:42,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:42,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:16:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:42,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 02:16:42,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:43,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:16:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-23 02:16:43,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:43,391 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-23 02:16:43,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2021-11-23 02:16:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-23 02:16:43,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:16:43,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813138928] [2021-11-23 02:16:43,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813138928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:43,728 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:43,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-23 02:16:43,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505068579] [2021-11-23 02:16:43,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:43,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:16:43,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:16:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:16:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:16:43,730 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:16:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:43,956 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2021-11-23 02:16:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:16:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 100 [2021-11-23 02:16:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:43,958 INFO L225 Difference]: With dead ends: 102 [2021-11-23 02:16:43,958 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 02:16:43,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:16:43,960 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 14 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:43,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 625 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 02:16:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-23 02:16:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0) internal successors, (43), 43 states have internal predecessors, (43), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:16:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-11-23 02:16:43,972 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 100 [2021-11-23 02:16:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:43,973 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-11-23 02:16:43,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-23 02:16:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-11-23 02:16:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-23 02:16:43,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:43,976 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:16:43,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:44,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:44,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash -549207241, now seen corresponding path program 1 times [2021-11-23 02:16:44,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:16:44,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819706012] [2021-11-23 02:16:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:44,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:16:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:16:44,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:16:44,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:16:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:16:45,031 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:16:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:16:46,047 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 02:16:46,047 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:16:46,048 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:16:46,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:46,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:16:46,270 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:46,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:16:46,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:16:46 BoogieIcfgContainer [2021-11-23 02:16:46,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:16:46,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:16:46,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:16:46,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:16:46,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:31" (3/4) ... [2021-11-23 02:16:46,416 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:16:46,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:16:46,417 INFO L158 Benchmark]: Toolchain (without parser) took 21582.59ms. Allocated memory was 54.5MB in the beginning and 308.3MB in the end (delta: 253.8MB). Free memory was 33.3MB in the beginning and 116.4MB in the end (delta: -83.1MB). Peak memory consumption was 169.8MB. Max. memory is 16.1GB. [2021-11-23 02:16:46,418 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:16:46,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5586.21ms. Allocated memory was 54.5MB in the beginning and 159.4MB in the end (delta: 104.9MB). Free memory was 33.1MB in the beginning and 72.6MB in the end (delta: -39.5MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2021-11-23 02:16:46,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 236.82ms. Allocated memory is still 159.4MB. Free memory was 72.6MB in the beginning and 61.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:16:46,419 INFO L158 Benchmark]: Boogie Preprocessor took 137.35ms. Allocated memory is still 159.4MB. Free memory was 61.3MB in the beginning and 96.5MB in the end (delta: -35.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:16:46,420 INFO L158 Benchmark]: RCFGBuilder took 975.29ms. Allocated memory is still 159.4MB. Free memory was 95.5MB in the beginning and 63.1MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-23 02:16:46,420 INFO L158 Benchmark]: TraceAbstraction took 14634.45ms. Allocated memory was 159.4MB in the beginning and 308.3MB in the end (delta: 148.9MB). Free memory was 63.1MB in the beginning and 116.4MB in the end (delta: -53.3MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. [2021-11-23 02:16:46,420 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 308.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:16:46,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5586.21ms. Allocated memory was 54.5MB in the beginning and 159.4MB in the end (delta: 104.9MB). Free memory was 33.1MB in the beginning and 72.6MB in the end (delta: -39.5MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 236.82ms. Allocated memory is still 159.4MB. Free memory was 72.6MB in the beginning and 61.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 137.35ms. Allocated memory is still 159.4MB. Free memory was 61.3MB in the beginning and 96.5MB in the end (delta: -35.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 975.29ms. Allocated memory is still 159.4MB. Free memory was 95.5MB in the beginning and 63.1MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14634.45ms. Allocated memory was 159.4MB in the beginning and 308.3MB in the end (delta: 148.9MB). Free memory was 63.1MB in the beginning and 116.4MB in the end (delta: -53.3MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 308.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=64] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={14:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str[cap - 1]=0] [L6839] return str; VAL [\old(max_size)=64, \result={14:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L11318] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={14:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=64] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={9:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str[cap - 1]=0] [L6839] return str; VAL [\old(max_size)=64, \result={9:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L11319] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={9:0}, nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={9:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str={14:0}] [L10794] RET, EXPR aws_c_string_is_valid(a) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str={9:0}] [L10795] RET, EXPR aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str={14:0}] [L10799] RET, EXPR aws_c_string_is_valid(a) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str={9:0}] [L10799] RET, EXPR aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] return rval; VAL [\result=1, a={14:0}, a={14:0}, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7113] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, len=1073741824, nondet_uint64_t()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, i=0, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] EXPR a[i] [L7123] EXPR b[i] VAL [\old(len)=1073741824, a={14:0}, a={14:0}, a[i]=48, b={9:0}, b={9:0}, b[i]=-80, i=0, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 195 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 5862 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5315 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1179 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 547 mSDtfsCounter, 1179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1246 GetRequests, 1136 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 749 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 2714 SizeOfPredicates, 61 NumberOfNonLiveVariables, 3203 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 1194/1194 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:16:46,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c9bb4d-0242-48d4-b598-00a0a944fc60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample