./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.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_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:38:43,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:38:43,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:38:43,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:38:43,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:38:43,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:38:43,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:38:43,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:38:43,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:38:43,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:38:43,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:38:43,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:38:43,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:38:43,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:38:43,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:38:43,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:38:43,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:38:43,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:38:43,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:38:43,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:38:43,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:38:43,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:38:43,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:38:43,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:38:43,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:38:43,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:38:43,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:38:43,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:38:43,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:38:43,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:38:43,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:38:43,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:38:43,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:38:43,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:38:43,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:38:43,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:38:43,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:38:43,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:38:43,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:38:43,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:38:43,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:38:43,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:38:43,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:38:43,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:38:43,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:38:43,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:38:43,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:38:43,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:38:43,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:38:43,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:38:43,710 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:38:43,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:38:43,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:38:43,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:38:43,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:38:43,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:38:43,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:38:43,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:38:43,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:38:43,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:38:43,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:38:43,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:38:43,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:38:43,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:38:43,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:38:43,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:38:43,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:38:43,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:38:43,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:38:43,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:38:43,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:38:43,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:38:43,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:38:43,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-20 06:38:43,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:38:44,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:38:44,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:38:44,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:38:44,024 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:38:44,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-20 06:38:44,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/44428804b/1f18b378a71c45ca9dd1dad745ffe91b/FLAG228e051b9 [2021-11-20 06:38:44,967 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:38:44,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-20 06:38:45,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/44428804b/1f18b378a71c45ca9dd1dad745ffe91b/FLAG228e051b9 [2021-11-20 06:38:45,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/44428804b/1f18b378a71c45ca9dd1dad745ffe91b [2021-11-20 06:38:45,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:38:45,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:38:45,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:38:45,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:38:45,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:38:45,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:38:45" (1/1) ... [2021-11-20 06:38:45,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec4f64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:45, skipping insertion in model container [2021-11-20 06:38:45,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:38:45" (1/1) ... [2021-11-20 06:38:45,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:38:45,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:38:45,925 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-20 06:38:45,933 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-20 06:38:47,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,095 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,114 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,115 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,117 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:47,700 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:38:47,701 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:38:47,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:38:47,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:38:47,705 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:38:47,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:38:47,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:38:47,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:38:47,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:38:47,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:38:47,999 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:38:48,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,452 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:38:48,642 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:38:48,655 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-20 06:38:48,656 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-20 06:38:48,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,686 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,686 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,687 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,687 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,720 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:38:48,721 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:38:48,721 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:38:48,755 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:38:48,756 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:38:48,756 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:38:48,756 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:38:48,757 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:38:48,757 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:38:48,758 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:38:48,778 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:38:48,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,949 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,949 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,964 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:48,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:38:49,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:38:49,251 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:38:49,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49 WrapperNode [2021-11-20 06:38:49,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:38:49,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:38:49,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:38:49,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:38:49,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,481 INFO L137 Inliner]: procedures = 768, calls = 3253, calls flagged for inlining = 78, calls inlined = 5, statements flattened = 337 [2021-11-20 06:38:49,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:38:49,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:38:49,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:38:49,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:38:49,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:38:49,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:38:49,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:38:49,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:38:49,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (1/1) ... [2021-11-20 06:38:49,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:38:49,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:49,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:38:49,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:38:49,655 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 06:38:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 06:38:49,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:38:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:38:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:38:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:38:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:38:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:38:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:38:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 06:38:49,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 06:38:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:38:49,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:38:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:38:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 06:38:49,658 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 06:38:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2021-11-20 06:38:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2021-11-20 06:38:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-20 06:38:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-20 06:38:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:38:49,964 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:38:49,966 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:38:50,308 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-20 06:38:50,321 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:38:50,328 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:38:50,328 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:38:50,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:50 BoogieIcfgContainer [2021-11-20 06:38:50,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:38:50,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:38:50,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:38:50,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:38:50,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:38:45" (1/3) ... [2021-11-20 06:38:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779ebf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:38:50, skipping insertion in model container [2021-11-20 06:38:50,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:49" (2/3) ... [2021-11-20 06:38:50,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779ebf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:38:50, skipping insertion in model container [2021-11-20 06:38:50,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:50" (3/3) ... [2021-11-20 06:38:50,338 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-20 06:38:50,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:38:50,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:38:50,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:38:50,398 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=PETRI_NET, 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 [2021-11-20 06:38:50,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:38:50,416 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) [2021-11-20 06:38:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 06:38:50,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:50,425 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] [2021-11-20 06:38:50,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1163022186, now seen corresponding path program 1 times [2021-11-20 06:38:50,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:50,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069629150] [2021-11-20 06:38:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:50,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:38:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:38:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:38:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 06:38:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-20 06:38:51,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:51,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069629150] [2021-11-20 06:38:51,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069629150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:51,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:51,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:38:51,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980838345] [2021-11-20 06:38:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:51,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:38:51,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:38:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:38:51,297 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 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 06:38:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:51,461 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2021-11-20 06:38:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:38:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-11-20 06:38:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:51,478 INFO L225 Difference]: With dead ends: 139 [2021-11-20 06:38:51,478 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 06:38:51,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:38:51,492 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:51,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 113 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 06:38:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-20 06:38:51,544 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) [2021-11-20 06:38:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-11-20 06:38:51,553 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 67 [2021-11-20 06:38:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:51,554 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-11-20 06:38:51,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 06:38:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-11-20 06:38:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 06:38:51,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:51,564 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] [2021-11-20 06:38:51,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:38:51,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash -447828983, now seen corresponding path program 1 times [2021-11-20 06:38:51,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:51,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563092049] [2021-11-20 06:38:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:51,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:38:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:38:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:38:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 06:38:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:38:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 06:38:52,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:52,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563092049] [2021-11-20 06:38:52,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563092049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:52,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:52,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 06:38:52,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839406401] [2021-11-20 06:38:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:52,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:38:52,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:38:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:38:52,363 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-20 06:38:52,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:52,789 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2021-11-20 06:38:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:38:52,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 3 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 70 [2021-11-20 06:38:52,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:52,794 INFO L225 Difference]: With dead ends: 89 [2021-11-20 06:38:52,794 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 06:38:52,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:38:52,801 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:52,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 497 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:38:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 06:38:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-20 06:38:52,820 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) [2021-11-20 06:38:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-11-20 06:38:52,827 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 70 [2021-11-20 06:38:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:52,828 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-11-20 06:38:52,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-20 06:38:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-11-20 06:38:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:38:52,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:52,838 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] [2021-11-20 06:38:52,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:38:52,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:52,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1505925942, now seen corresponding path program 1 times [2021-11-20 06:38:52,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050985626] [2021-11-20 06:38:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:52,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:38:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:38:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:38:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 06:38:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:38:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:38:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-20 06:38:53,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:53,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050985626] [2021-11-20 06:38:53,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050985626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:53,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:53,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 06:38:53,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797212422] [2021-11-20 06:38:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:53,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:38:53,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:38:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:38:53,536 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 06:38:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:54,134 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2021-11-20 06:38:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:38:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 3 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 75 [2021-11-20 06:38:54,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:54,137 INFO L225 Difference]: With dead ends: 94 [2021-11-20 06:38:54,137 INFO L226 Difference]: Without dead ends: 92 [2021-11-20 06:38:54,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:38:54,139 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 58 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:54,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 721 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:38:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-20 06:38:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2021-11-20 06:38:54,153 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) [2021-11-20 06:38:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-20 06:38:54,155 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 75 [2021-11-20 06:38:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:54,156 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-20 06:38:54,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 06:38:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-20 06:38:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 06:38:54,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:54,159 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] [2021-11-20 06:38:54,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:38:54,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -892933696, now seen corresponding path program 1 times [2021-11-20 06:38:54,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484359916] [2021-11-20 06:38:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:54,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:38:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:38:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:38:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 06:38:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:38:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:38:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 06:38:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-20 06:38:54,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:54,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484359916] [2021-11-20 06:38:54,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484359916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:54,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:54,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:38:54,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545763458] [2021-11-20 06:38:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:54,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:38:54,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:38:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:38:54,736 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-20 06:38:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:55,147 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2021-11-20 06:38:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:38:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 3 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 83 [2021-11-20 06:38:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:55,150 INFO L225 Difference]: With dead ends: 98 [2021-11-20 06:38:55,150 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:38:55,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:38:55,151 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 57 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:55,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 635 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:38:55,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:38:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-11-20 06:38:55,164 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) [2021-11-20 06:38:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-11-20 06:38:55,166 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 83 [2021-11-20 06:38:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:55,166 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-11-20 06:38:55,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-20 06:38:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-11-20 06:38:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-20 06:38:55,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:55,169 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] [2021-11-20 06:38:55,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:38:55,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 829878033, now seen corresponding path program 1 times [2021-11-20 06:38:55,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:55,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493827389] [2021-11-20 06:38:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:55,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:38:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 06:38:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:38:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 06:38:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:38:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:38:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:38:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-20 06:38:55,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:55,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493827389] [2021-11-20 06:38:55,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493827389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:55,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:55,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:38:55,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141301511] [2021-11-20 06:38:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:55,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:38:55,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:38:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:38:55,765 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 06:38:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:56,225 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-11-20 06:38:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:38:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 3 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 107 [2021-11-20 06:38:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:56,228 INFO L225 Difference]: With dead ends: 102 [2021-11-20 06:38:56,229 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 06:38:56,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:38:56,230 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 31 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:56,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1006 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:38:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 06:38:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-11-20 06:38:56,242 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) [2021-11-20 06:38:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2021-11-20 06:38:56,244 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 107 [2021-11-20 06:38:56,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:56,245 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2021-11-20 06:38:56,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 06:38:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2021-11-20 06:38:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 06:38:56,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:56,248 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] [2021-11-20 06:38:56,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:38:56,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 265370887, now seen corresponding path program 1 times [2021-11-20 06:38:56,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823485780] [2021-11-20 06:38:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:56,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:38:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 06:38:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:38:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 06:38:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:38:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:38:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:38:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 06:38:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-20 06:38:57,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:57,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823485780] [2021-11-20 06:38:57,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823485780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:57,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:57,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:38:57,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267343367] [2021-11-20 06:38:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:57,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:38:57,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:38:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:38:57,104 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-20 06:38:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:57,504 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2021-11-20 06:38:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:38:57,505 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 3 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 115 [2021-11-20 06:38:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:57,508 INFO L225 Difference]: With dead ends: 100 [2021-11-20 06:38:57,509 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:38:57,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:38:57,510 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 43 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:57,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 560 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:38:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:38:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2021-11-20 06:38:57,520 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) [2021-11-20 06:38:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-11-20 06:38:57,521 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 115 [2021-11-20 06:38:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:57,522 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-11-20 06:38:57,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-20 06:38:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-11-20 06:38:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 06:38:57,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:57,524 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] [2021-11-20 06:38:57,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:38:57,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash -565706850, now seen corresponding path program 1 times [2021-11-20 06:38:57,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:57,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651363629] [2021-11-20 06:38:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:57,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:38:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:38:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:38:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:38:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:38:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:38:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:38:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 06:38:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:38:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:38:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 06:38:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 06:38:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:38:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:38:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 06:38:58,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:58,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651363629] [2021-11-20 06:38:58,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651363629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:58,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:58,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:38:58,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492686010] [2021-11-20 06:38:58,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:58,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:38:58,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:38:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:38:58,329 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 11 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-20 06:38:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:58,767 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2021-11-20 06:38:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:38:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 11 states have internal predecessors, (39), 6 states have call successors, (18), 3 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 100 [2021-11-20 06:38:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:58,769 INFO L225 Difference]: With dead ends: 102 [2021-11-20 06:38:58,769 INFO L226 Difference]: Without dead ends: 71 [2021-11-20 06:38:58,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:38:58,770 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 51 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:58,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 723 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:38:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-20 06:38:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-20 06:38:58,779 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) [2021-11-20 06:38:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-11-20 06:38:58,780 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 100 [2021-11-20 06:38:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:58,781 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-11-20 06:38:58,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 11 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-20 06:38:58,781 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-11-20 06:38:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 06:38:58,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:58,783 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] [2021-11-20 06:38:58,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:38:58,784 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:38:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash -549207241, now seen corresponding path program 1 times [2021-11-20 06:38:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:58,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021695105] [2021-11-20 06:38:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:58,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:38:59,076 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:38:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:38:59,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:38:59,445 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:38:59,446 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:38:59,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:38:59,452 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:59,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:38:59,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:38:59 BoogieIcfgContainer [2021-11-20 06:38:59,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:38:59,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:38:59,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:38:59,572 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:38:59,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:50" (3/4) ... [2021-11-20 06:38:59,575 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:38:59,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:38:59,576 INFO L158 Benchmark]: Toolchain (without parser) took 14137.46ms. Allocated memory was 88.1MB in the beginning and 360.7MB in the end (delta: 272.6MB). Free memory was 53.3MB in the beginning and 240.8MB in the end (delta: -187.5MB). Peak memory consumption was 84.7MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,577 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory was 60.8MB in the beginning and 60.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:38:59,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3812.06ms. Allocated memory was 88.1MB in the beginning and 142.6MB in the end (delta: 54.5MB). Free memory was 53.0MB in the beginning and 51.1MB in the end (delta: 1.9MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 228.65ms. Allocated memory is still 142.6MB. Free memory was 51.1MB in the beginning and 75.7MB in the end (delta: -24.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,578 INFO L158 Benchmark]: Boogie Preprocessor took 71.82ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 70.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,579 INFO L158 Benchmark]: RCFGBuilder took 775.51ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 70.8MB in the beginning and 151.3MB in the end (delta: -80.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,579 INFO L158 Benchmark]: TraceAbstraction took 9239.29ms. Allocated memory was 220.2MB in the beginning and 360.7MB in the end (delta: 140.5MB). Free memory was 151.3MB in the beginning and 241.8MB in the end (delta: -90.5MB). Peak memory consumption was 173.1MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,580 INFO L158 Benchmark]: Witness Printer took 4.13ms. Allocated memory is still 360.7MB. Free memory was 241.8MB in the beginning and 240.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:38:59,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 88.1MB. Free memory was 60.8MB in the beginning and 60.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3812.06ms. Allocated memory was 88.1MB in the beginning and 142.6MB in the end (delta: 54.5MB). Free memory was 53.0MB in the beginning and 51.1MB in the end (delta: 1.9MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 228.65ms. Allocated memory is still 142.6MB. Free memory was 51.1MB in the beginning and 75.7MB in the end (delta: -24.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.82ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 70.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 775.51ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 70.8MB in the beginning and 151.3MB in the end (delta: -80.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9239.29ms. Allocated memory was 220.2MB in the beginning and 360.7MB in the end (delta: 140.5MB). Free memory was 151.3MB in the beginning and 241.8MB in the end (delta: -90.5MB). Peak memory consumption was 173.1MB. Max. memory is 16.1GB. * Witness Printer took 4.13ms. Allocated memory is still 360.7MB. Free memory was 241.8MB in the beginning and 240.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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()=-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) 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=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) 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)=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) 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=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; VAL [\old(max_size)=64, \result={-2:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}] [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()=18446744073709551617, 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=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) 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)=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) 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=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; VAL [\old(max_size)=64, \result={-3:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}] [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))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str={-2:0}] [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) 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={-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))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str={-3:0}] [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) 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={-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))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str={-2:0}] [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))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str={-3:0}] [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) 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)=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, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 362 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 4255 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3740 mSDsCounter, 251 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2486 IncrementalHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 251 mSolverCounterUnsat, 515 mSDtfsCounter, 2486 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, InterpolantAutomatonStates: 94, 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, 1.0s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 749 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 610 ConstructedInterpolants, 0 QuantifiedInterpolants, 1698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 597/597 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 [2021-11-20 06:38:59,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/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_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.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_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:39:02,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:39:02,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:39:02,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:39:02,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:39:02,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:39:02,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:39:02,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:39:02,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:39:02,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:39:02,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:39:02,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:39:02,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:39:02,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:39:02,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:39:02,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:39:02,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:39:02,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:39:02,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:39:02,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:39:02,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:39:02,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:39:02,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:39:02,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:39:02,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:39:02,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:39:02,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:39:02,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:39:02,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:39:02,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:39:02,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:39:02,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:39:02,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:39:02,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:39:02,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:39:02,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:39:02,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:39:02,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:39:02,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:39:02,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:39:02,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:39:02,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-20 06:39:02,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:39:02,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:39:02,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:39:02,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:39:02,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:39:02,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:39:02,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:39:02,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:39:02,362 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:39:02,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:39:02,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:39:02,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:39:02,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:39:02,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:39:02,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:39:02,364 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:39:02,364 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:39:02,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:39:02,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:39:02,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:39:02,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:39:02,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:39:02,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:39:02,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:02,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:39:02,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:39:02,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:39:02,367 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:39:02,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:39:02,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:39:02,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:39:02,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:39:02,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:39:02,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:39:02,368 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-20 06:39:02,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:39:02,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:39:02,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:39:02,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:39:02,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:39:02,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-20 06:39:02,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/187cbc64b/e1a7b751012e4a3cb3218fc80e1457a4/FLAGf7c70fd30 [2021-11-20 06:39:03,735 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:39:03,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-20 06:39:03,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/187cbc64b/e1a7b751012e4a3cb3218fc80e1457a4/FLAGf7c70fd30 [2021-11-20 06:39:04,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/data/187cbc64b/e1a7b751012e4a3cb3218fc80e1457a4 [2021-11-20 06:39:04,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:39:04,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:39:04,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:04,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:39:04,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:39:04,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:04" (1/1) ... [2021-11-20 06:39:04,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610dbf75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:04, skipping insertion in model container [2021-11-20 06:39:04,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:04" (1/1) ... [2021-11-20 06:39:04,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:39:04,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:39:04,729 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-20 06:39:04,739 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-20 06:39:06,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,114 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:06,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:39:06,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:39:06,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:39:06,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:39:06,738 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:39:06,739 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:39:06,740 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:39:06,741 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:39:06,741 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:39:06,742 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:39:06,998 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:39:07,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,573 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:07,717 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:39:07,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:39:07,905 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-20 06:39:07,906 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-20 06:39:07,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,964 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:07,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,006 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:39:08,007 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:39:08,008 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:39:08,009 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:39:08,009 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:39:08,010 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:39:08,011 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:39:08,011 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:39:08,012 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:39:08,013 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:39:08,033 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:39:08,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,228 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,229 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:08,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:39:08,432 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-20 06:39:08,433 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_ce631f81-18ec-442e-95d4-c9f15bf24b96/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-20 06:39:08,464 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,504 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:39:08,505 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:39:08,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:39:08,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:39:08,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:39:08,514 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:39:08,515 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:39:08,515 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:39:08,516 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:39:08,516 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:39:08,555 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:39:08,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:39:08,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:09,202 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:39:09,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09 WrapperNode [2021-11-20 06:39:09,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:09,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:09,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:39:09,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:39:09,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,510 INFO L137 Inliner]: procedures = 788, calls = 3253, calls flagged for inlining = 80, calls inlined = 5, statements flattened = 338 [2021-11-20 06:39:09,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:09,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:39:09,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:39:09,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:39:09,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:39:09,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:39:09,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:39:09,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:39:09,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:09,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:09,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:39:09,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:39:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 06:39:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 06:39:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:39:09,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:39:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:39:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:39:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:39:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:39:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 06:39:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 06:39:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 06:39:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 06:39:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:39:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 06:39:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:39:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:39:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:39:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2021-11-20 06:39:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2021-11-20 06:39:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-20 06:39:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-20 06:39:09,984 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:39:10,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:39:10,457 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-20 06:39:10,468 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:39:10,475 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:39:10,475 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:39:10,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:10 BoogieIcfgContainer [2021-11-20 06:39:10,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:39:10,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:39:10,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:39:10,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:39:10,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:39:04" (1/3) ... [2021-11-20 06:39:10,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f32a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:10, skipping insertion in model container [2021-11-20 06:39:10,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (2/3) ... [2021-11-20 06:39:10,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f32a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:10, skipping insertion in model container [2021-11-20 06:39:10,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:10" (3/3) ... [2021-11-20 06:39:10,487 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-20 06:39:10,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:39:10,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:39:10,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:39:10,550 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=PETRI_NET, 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 [2021-11-20 06:39:10,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:39:10,570 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) [2021-11-20 06:39:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 06:39:10,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:10,579 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] [2021-11-20 06:39:10,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1163022186, now seen corresponding path program 1 times [2021-11-20 06:39:10,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:10,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60331584] [2021-11-20 06:39:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:10,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:10,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:10,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:10,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:39:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:10,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:39:10,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-20 06:39:11,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-20 06:39:11,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60331584] [2021-11-20 06:39:11,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60331584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:11,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:11,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:39:11,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447609571] [2021-11-20 06:39:11,384 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:11,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:39:11,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:11,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:39:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:39:11,434 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) [2021-11-20 06:39:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:11,481 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2021-11-20 06:39:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:39:11,486 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 [2021-11-20 06:39:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:11,501 INFO L225 Difference]: With dead ends: 139 [2021-11-20 06:39:11,501 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 06:39:11,506 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 [2021-11-20 06:39:11,510 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 [2021-11-20 06:39:11,512 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] [2021-11-20 06:39:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 06:39:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-20 06:39:11,556 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) [2021-11-20 06:39:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-11-20 06:39:11,560 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 67 [2021-11-20 06:39:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:11,562 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-11-20 06:39:11,562 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) [2021-11-20 06:39:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-11-20 06:39:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 06:39:11,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:11,567 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] [2021-11-20 06:39:11,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:11,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:11,781 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash -447828983, now seen corresponding path program 1 times [2021-11-20 06:39:11,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014519627] [2021-11-20 06:39:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:11,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:11,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:11,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:39:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:12,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:39:12,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 06:39:12,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 06:39:12,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:12,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014519627] [2021-11-20 06:39:12,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014519627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:12,915 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:12,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 14 [2021-11-20 06:39:12,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736390058] [2021-11-20 06:39:12,915 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:12,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:39:12,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:12,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:39:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:39:12,918 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) [2021-11-20 06:39:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:13,294 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2021-11-20 06:39:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:39:13,295 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 [2021-11-20 06:39:13,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:13,298 INFO L225 Difference]: With dead ends: 89 [2021-11-20 06:39:13,298 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 06:39:13,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:13,300 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:13,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 722 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:39:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 06:39:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-20 06:39:13,343 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) [2021-11-20 06:39:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-11-20 06:39:13,345 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 70 [2021-11-20 06:39:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:13,346 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-11-20 06:39:13,347 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) [2021-11-20 06:39:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-11-20 06:39:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:39:13,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:13,349 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] [2021-11-20 06:39:13,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:13,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:13,567 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1505925942, now seen corresponding path program 1 times [2021-11-20 06:39:13,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:13,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428981875] [2021-11-20 06:39:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:13,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:13,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:13,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:13,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:39:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:13,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:39:13,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-20 06:39:14,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-20 06:39:14,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:14,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428981875] [2021-11-20 06:39:14,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428981875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:14,617 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:14,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 19 [2021-11-20 06:39:14,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196882953] [2021-11-20 06:39:14,617 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:14,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:39:14,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:14,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:39:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:39:14,619 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) [2021-11-20 06:39:15,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:15,270 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2021-11-20 06:39:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:39:15,274 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 [2021-11-20 06:39:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:15,276 INFO L225 Difference]: With dead ends: 94 [2021-11-20 06:39:15,276 INFO L226 Difference]: Without dead ends: 92 [2021-11-20 06:39:15,277 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 [2021-11-20 06:39:15,278 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 [2021-11-20 06:39:15,279 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] [2021-11-20 06:39:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-20 06:39:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2021-11-20 06:39:15,294 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) [2021-11-20 06:39:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-20 06:39:15,296 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 75 [2021-11-20 06:39:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:15,297 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-20 06:39:15,297 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) [2021-11-20 06:39:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-20 06:39:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 06:39:15,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:15,300 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] [2021-11-20 06:39:15,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:15,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:15,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -892933696, now seen corresponding path program 1 times [2021-11-20 06:39:15,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:15,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163771904] [2021-11-20 06:39:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:15,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:15,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:15,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:15,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:39:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:15,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:39:15,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-20 06:39:16,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-20 06:39:16,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163771904] [2021-11-20 06:39:16,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163771904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:16,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:16,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-11-20 06:39:16,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925164823] [2021-11-20 06:39:16,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:16,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:39:16,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:39:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:16,760 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) [2021-11-20 06:39:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:17,173 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2021-11-20 06:39:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:39:17,174 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 [2021-11-20 06:39:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:17,176 INFO L225 Difference]: With dead ends: 98 [2021-11-20 06:39:17,176 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:39:17,177 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 [2021-11-20 06:39:17,178 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:17,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 920 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:39:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:39:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-11-20 06:39:17,203 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) [2021-11-20 06:39:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-11-20 06:39:17,206 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 83 [2021-11-20 06:39:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:17,210 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-11-20 06:39:17,210 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) [2021-11-20 06:39:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-11-20 06:39:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-20 06:39:17,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:17,220 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] [2021-11-20 06:39:17,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:17,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:17,438 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 829878033, now seen corresponding path program 1 times [2021-11-20 06:39:17,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:17,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903002008] [2021-11-20 06:39:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:17,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:17,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:17,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:17,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:39:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:17,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:39:17,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-20 06:39:18,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-20 06:39:18,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:18,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903002008] [2021-11-20 06:39:18,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903002008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:18,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:18,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 18 [2021-11-20 06:39:18,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262208171] [2021-11-20 06:39:18,635 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:18,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:39:18,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:39:18,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:18,638 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) [2021-11-20 06:39:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:19,063 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-11-20 06:39:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:39:19,064 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 [2021-11-20 06:39:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:19,066 INFO L225 Difference]: With dead ends: 102 [2021-11-20 06:39:19,066 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 06:39:19,067 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 [2021-11-20 06:39:19,068 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 [2021-11-20 06:39:19,068 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] [2021-11-20 06:39:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 06:39:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-11-20 06:39:19,081 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) [2021-11-20 06:39:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2021-11-20 06:39:19,083 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 107 [2021-11-20 06:39:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:19,084 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2021-11-20 06:39:19,084 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) [2021-11-20 06:39:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2021-11-20 06:39:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 06:39:19,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:19,087 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] [2021-11-20 06:39:19,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 06:39:19,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:19,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash 265370887, now seen corresponding path program 1 times [2021-11-20 06:39:19,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:19,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072538399] [2021-11-20 06:39:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:19,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:19,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:19,304 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:19,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:39:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:39:19,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-20 06:39:20,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-20 06:39:20,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:20,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072538399] [2021-11-20 06:39:20,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072538399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:20,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:20,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 16 [2021-11-20 06:39:20,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650796655] [2021-11-20 06:39:20,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:20,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:39:20,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:39:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:39:20,648 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) [2021-11-20 06:39:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:21,035 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2021-11-20 06:39:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:39:21,036 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 [2021-11-20 06:39:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:21,039 INFO L225 Difference]: With dead ends: 100 [2021-11-20 06:39:21,039 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:39:21,040 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 [2021-11-20 06:39:21,041 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 [2021-11-20 06:39:21,041 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] [2021-11-20 06:39:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:39:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2021-11-20 06:39:21,051 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) [2021-11-20 06:39:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-11-20 06:39:21,052 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 115 [2021-11-20 06:39:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:21,053 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-11-20 06:39:21,053 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) [2021-11-20 06:39:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-11-20 06:39:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 06:39:21,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:21,055 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] [2021-11-20 06:39:21,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:21,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:21,270 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -565706850, now seen corresponding path program 1 times [2021-11-20 06:39:21,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:21,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163042922] [2021-11-20 06:39:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:21,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:21,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:21,272 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:21,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:39:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:39:21,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:21,947 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 [2021-11-20 06:39:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 06:39:21,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:22,063 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 06:39:22,063 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 [2021-11-20 06:39:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-20 06:39:22,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163042922] [2021-11-20 06:39:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163042922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:22,435 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:22,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-20 06:39:22,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841056303] [2021-11-20 06:39:22,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:22,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:39:22,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:39:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:39:22,437 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) [2021-11-20 06:39:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:22,689 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2021-11-20 06:39:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:39:22,690 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 [2021-11-20 06:39:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:22,691 INFO L225 Difference]: With dead ends: 102 [2021-11-20 06:39:22,691 INFO L226 Difference]: Without dead ends: 71 [2021-11-20 06:39:22,691 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 [2021-11-20 06:39:22,692 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:22,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 625 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:39:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-20 06:39:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-20 06:39:22,701 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) [2021-11-20 06:39:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-11-20 06:39:22,703 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 100 [2021-11-20 06:39:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:22,703 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-11-20 06:39:22,704 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) [2021-11-20 06:39:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-11-20 06:39:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 06:39:22,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:22,706 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] [2021-11-20 06:39:22,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:22,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:22,927 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:22,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:22,927 INFO L85 PathProgramCache]: Analyzing trace with hash -549207241, now seen corresponding path program 1 times [2021-11-20 06:39:22,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:22,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432391229] [2021-11-20 06:39:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:22,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:22,929 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:22,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:39:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:39:23,752 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:39:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:39:24,757 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:39:24,757 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:39:24,758 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:39:24,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:24,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:24,985 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:24,988 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:39:25,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:39:25 BoogieIcfgContainer [2021-11-20 06:39:25,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:39:25,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:39:25,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:39:25,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:39:25,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:10" (3/4) ... [2021-11-20 06:39:25,126 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:39:25,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:39:25,128 INFO L158 Benchmark]: Toolchain (without parser) took 20931.16ms. Allocated memory was 58.7MB in the beginning and 465.6MB in the end (delta: 406.8MB). Free memory was 26.9MB in the beginning and 374.8MB in the end (delta: -347.9MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2021-11-20 06:39:25,128 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:39:25,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5004.95ms. Allocated memory was 58.7MB in the beginning and 157.3MB in the end (delta: 98.6MB). Free memory was 26.7MB in the beginning and 60.6MB in the end (delta: -34.0MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2021-11-20 06:39:25,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 307.83ms. Allocated memory is still 157.3MB. Free memory was 60.6MB in the beginning and 91.2MB in the end (delta: -30.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-20 06:39:25,130 INFO L158 Benchmark]: Boogie Preprocessor took 132.95ms. Allocated memory is still 157.3MB. Free memory was 91.2MB in the beginning and 85.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 06:39:25,131 INFO L158 Benchmark]: RCFGBuilder took 832.01ms. Allocated memory is still 157.3MB. Free memory was 85.9MB in the beginning and 52.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-20 06:39:25,132 INFO L158 Benchmark]: TraceAbstraction took 14641.24ms. Allocated memory was 157.3MB in the beginning and 465.6MB in the end (delta: 308.3MB). Free memory was 52.3MB in the beginning and 375.9MB in the end (delta: -323.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:39:25,132 INFO L158 Benchmark]: Witness Printer took 5.39ms. Allocated memory is still 465.6MB. Free memory was 375.9MB in the beginning and 374.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:39:25,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5004.95ms. Allocated memory was 58.7MB in the beginning and 157.3MB in the end (delta: 98.6MB). Free memory was 26.7MB in the beginning and 60.6MB in the end (delta: -34.0MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 307.83ms. Allocated memory is still 157.3MB. Free memory was 60.6MB in the beginning and 91.2MB in the end (delta: -30.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 132.95ms. Allocated memory is still 157.3MB. Free memory was 91.2MB in the beginning and 85.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 832.01ms. Allocated memory is still 157.3MB. Free memory was 85.9MB in the beginning and 52.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14641.24ms. Allocated memory was 157.3MB in the beginning and 465.6MB in the end (delta: 308.3MB). Free memory was 52.3MB in the beginning and 375.9MB in the end (delta: -323.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.39ms. Allocated memory is still 465.6MB. Free memory was 375.9MB in the beginning and 374.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 5862 SdHoareTripleChecker+Invalid, 1.5s 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, 1.6s 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, 1.9s SatisfiabilityAnalysisTime, 6.1s 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 [2021-11-20 06:39:25,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce631f81-18ec-442e-95d4-c9f15bf24b96/bin/uautomizer-DQz5hQGWxF/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