./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_compare_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_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/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_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/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_b806654b-9701-4665-92ec-7a2568216615/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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:21:41,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:21:41,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:21:41,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:21:41,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:21:41,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:21:41,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:21:41,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:21:41,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:21:41,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:21:41,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:21:41,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:21:41,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:21:41,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:21:41,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:21:41,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:21:41,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:21:41,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:21:41,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:21:41,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:21:41,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:21:41,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:21:41,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:21:41,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:21:41,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:21:41,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:21:41,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:21:41,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:21:41,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:21:41,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:21:41,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:21:41,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:21:41,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:21:41,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:21:41,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:21:41,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:21:41,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:21:41,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:21:41,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:21:41,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:21:41,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:21:41,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:21:41,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:21:41,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:21:41,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:21:41,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:21:41,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:21:41,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:21:41,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:21:41,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:21:41,593 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:21:41,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:21:41,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:21:41,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:21:41,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:21:41,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:21:41,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:21:41,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:21:41,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:21:41,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:21:41,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:21:41,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:21:41,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:21:41,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:21:41,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:21:41,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:21:41,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:21:41,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:21:41,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:21:41,600 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:21:41,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:21:41,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:21:41,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:21:41,604 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_b806654b-9701-4665-92ec-7a2568216615/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2021-11-20 07:21:41,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:21:42,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:21:42,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:21:42,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:21:42,007 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:21:42,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-20 07:21:42,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/data/7899cea99/b0181bff684d424c97a19a8d68c1e9d5/FLAGa735c9267 [2021-11-20 07:21:43,126 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:21:43,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-20 07:21:43,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/data/7899cea99/b0181bff684d424c97a19a8d68c1e9d5/FLAGa735c9267 [2021-11-20 07:21:43,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/data/7899cea99/b0181bff684d424c97a19a8d68c1e9d5 [2021-11-20 07:21:43,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:21:43,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:21:43,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:21:43,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:21:43,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:21:43,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:21:43" (1/1) ... [2021-11-20 07:21:43,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67860114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:43, skipping insertion in model container [2021-11-20 07:21:43,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:21:43" (1/1) ... [2021-11-20 07:21:43,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:21:43,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:21:44,051 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_b806654b-9701-4665-92ec-7a2568216615/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-20 07:21:44,062 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_b806654b-9701-4665-92ec-7a2568216615/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-20 07:21:45,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,443 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,444 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,445 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,446 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,464 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:45,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:21:45,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:21:45,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:21:45,998 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:21:46,000 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:21:46,001 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:21:46,002 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:21:46,003 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:21:46,004 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:21:46,005 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:21:46,224 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:21:46,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:46,724 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:21:46,754 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_b806654b-9701-4665-92ec-7a2568216615/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-20 07:21:46,761 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_b806654b-9701-4665-92ec-7a2568216615/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-20 07:21:46,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,834 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:46,915 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 07:21:46,917 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 07:21:46,918 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 07:21:46,919 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 07:21:46,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 07:21:46,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 07:21:46,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 07:21:46,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 07:21:46,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 07:21:46,924 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 07:21:46,953 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 07:21:47,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:47,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 07:21:47,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:47,403 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:21:47,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47 WrapperNode [2021-11-20 07:21:47,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:21:47,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:21:47,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:21:47,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:21:47,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,725 INFO L137 Inliner]: procedures = 693, calls = 2780, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 822 [2021-11-20 07:21:47,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:21:47,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:21:47,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:21:47,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:21:47,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:21:47,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:21:47,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:21:47,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:21:47,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (1/1) ... [2021-11-20 07:21:47,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:21:47,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:47,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:21:47,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:21:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-20 07:21:47,967 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-20 07:21:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2021-11-20 07:21:47,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2021-11-20 07:21:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-20 07:21:47,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-20 07:21:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 07:21:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 07:21:47,969 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 07:21:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:21:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 07:21:47,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 07:21:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:21:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:21:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:21:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:21:47,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:21:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 07:21:47,971 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 07:21:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 07:21:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-20 07:21:47,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-20 07:21:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:21:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:21:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:21:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 07:21:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 07:21:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 07:21:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 07:21:47,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:21:47,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:21:48,344 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:21:48,347 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:21:50,190 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:21:50,200 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:21:50,200 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:21:50,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:50 BoogieIcfgContainer [2021-11-20 07:21:50,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:21:50,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:21:50,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:21:50,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:21:50,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:21:43" (1/3) ... [2021-11-20 07:21:50,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a50c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:21:50, skipping insertion in model container [2021-11-20 07:21:50,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:47" (2/3) ... [2021-11-20 07:21:50,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a50c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:21:50, skipping insertion in model container [2021-11-20 07:21:50,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:50" (3/3) ... [2021-11-20 07:21:50,216 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2021-11-20 07:21:50,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:21:50,226 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:21:50,302 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:21:50,311 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 07:21:50,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:21:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 80 states have (on average 1.3) internal successors, (104), 81 states have internal predecessors, (104), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-20 07:21:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 07:21:50,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:50,351 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-20 07:21:50,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1023392938, now seen corresponding path program 1 times [2021-11-20 07:21:50,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:50,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327123224] [2021-11-20 07:21:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:50,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:21:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 07:21:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:21:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:21:51,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:51,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327123224] [2021-11-20 07:21:51,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327123224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:51,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:51,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:21:51,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150091855] [2021-11-20 07:21:51,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:51,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:21:51,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:21:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:21:51,247 INFO L87 Difference]: Start difference. First operand has 125 states, 80 states have (on average 1.3) internal successors, (104), 81 states have internal predecessors, (104), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:21:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:51,296 INFO L93 Difference]: Finished difference Result 245 states and 350 transitions. [2021-11-20 07:21:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:21:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2021-11-20 07:21:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:51,311 INFO L225 Difference]: With dead ends: 245 [2021-11-20 07:21:51,312 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 07:21:51,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 07:21:51,322 INFO L933 BasicCegarLoop]: 168 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, 168 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 07:21:51,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 07:21:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-20 07:21:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 77 states have internal predecessors, (97), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-20 07:21:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 162 transitions. [2021-11-20 07:21:51,387 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 162 transitions. Word has length 52 [2021-11-20 07:21:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:51,389 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 162 transitions. [2021-11-20 07:21:51,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:21:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 162 transitions. [2021-11-20 07:21:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 07:21:51,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:51,398 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-20 07:21:51,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:21:51,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1611808362, now seen corresponding path program 1 times [2021-11-20 07:21:51,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:51,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770909692] [2021-11-20 07:21:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:51,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:21:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 07:21:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:21:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:21:51,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:51,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770909692] [2021-11-20 07:21:51,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770909692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:51,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:51,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:21:51,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007917300] [2021-11-20 07:21:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:51,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:51,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:51,883 INFO L87 Difference]: Start difference. First operand 120 states and 162 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:21:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:52,018 INFO L93 Difference]: Finished difference Result 176 states and 237 transitions. [2021-11-20 07:21:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2021-11-20 07:21:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:52,030 INFO L225 Difference]: With dead ends: 176 [2021-11-20 07:21:52,030 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 07:21:52,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:52,037 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 8 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:52,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 477 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:21:52,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 07:21:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2021-11-20 07:21:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 89 states have internal predecessors, (113), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-20 07:21:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 188 transitions. [2021-11-20 07:21:52,091 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 188 transitions. Word has length 52 [2021-11-20 07:21:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:52,092 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 188 transitions. [2021-11-20 07:21:52,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:21:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 188 transitions. [2021-11-20 07:21:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 07:21:52,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:52,105 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-20 07:21:52,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:21:52,106 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1339119567, now seen corresponding path program 1 times [2021-11-20 07:21:52,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:52,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828792923] [2021-11-20 07:21:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:52,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:21:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 07:21:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:21:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 07:21:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:21:52,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:52,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828792923] [2021-11-20 07:21:52,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828792923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:52,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:52,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:21:52,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785327620] [2021-11-20 07:21:52,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:52,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:52,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:52,592 INFO L87 Difference]: Start difference. First operand 137 states and 188 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 07:21:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:52,657 INFO L93 Difference]: Finished difference Result 164 states and 222 transitions. [2021-11-20 07:21:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:52,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2021-11-20 07:21:52,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:52,661 INFO L225 Difference]: With dead ends: 164 [2021-11-20 07:21:52,663 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 07:21:52,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:52,669 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:52,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 07:21:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-20 07:21:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 93 states have internal predecessors, (118), 38 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2021-11-20 07:21:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 195 transitions. [2021-11-20 07:21:52,702 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 195 transitions. Word has length 61 [2021-11-20 07:21:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:52,705 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 195 transitions. [2021-11-20 07:21:52,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 07:21:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 195 transitions. [2021-11-20 07:21:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 07:21:52,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:52,711 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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 07:21:52,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:21:52,712 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash 911301910, now seen corresponding path program 1 times [2021-11-20 07:21:52,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:52,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149565587] [2021-11-20 07:21:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:52,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:21:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 07:21:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:21:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:21:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:21:53,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149565587] [2021-11-20 07:21:53,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149565587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:53,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:53,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:21:53,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643816836] [2021-11-20 07:21:53,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:53,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:21:53,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:21:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:53,204 INFO L87 Difference]: Start difference. First operand 143 states and 195 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 07:21:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:53,283 INFO L93 Difference]: Finished difference Result 207 states and 280 transitions. [2021-11-20 07:21:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:53,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2021-11-20 07:21:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:53,291 INFO L225 Difference]: With dead ends: 207 [2021-11-20 07:21:53,291 INFO L226 Difference]: Without dead ends: 163 [2021-11-20 07:21:53,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:53,297 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 5 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:53,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 650 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-20 07:21:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-20 07:21:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 107 states have (on average 1.2616822429906542) internal successors, (135), 108 states have internal predecessors, (135), 44 states have call successors, (44), 10 states have call predecessors, (44), 11 states have return successors, (44), 44 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-20 07:21:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 223 transitions. [2021-11-20 07:21:53,335 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 223 transitions. Word has length 62 [2021-11-20 07:21:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:53,337 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 223 transitions. [2021-11-20 07:21:53,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 07:21:53,337 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 223 transitions. [2021-11-20 07:21:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 07:21:53,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:53,341 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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 07:21:53,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:21:53,341 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash 17815572, now seen corresponding path program 1 times [2021-11-20 07:21:53,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:53,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557886087] [2021-11-20 07:21:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:53,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:21:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 07:21:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:21:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:21:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:21:53,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:53,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557886087] [2021-11-20 07:21:53,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557886087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:53,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:53,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:21:53,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43938686] [2021-11-20 07:21:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:53,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:53,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:53,752 INFO L87 Difference]: Start difference. First operand 163 states and 223 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 07:21:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:53,964 INFO L93 Difference]: Finished difference Result 193 states and 260 transitions. [2021-11-20 07:21:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:21:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2021-11-20 07:21:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:53,968 INFO L225 Difference]: With dead ends: 193 [2021-11-20 07:21:53,968 INFO L226 Difference]: Without dead ends: 171 [2021-11-20 07:21:53,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:21:53,970 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 29 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:53,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 970 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:21:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-20 07:21:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 162. [2021-11-20 07:21:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 107 states have internal predecessors, (134), 44 states have call successors, (44), 10 states have call predecessors, (44), 11 states have return successors, (44), 44 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-20 07:21:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 222 transitions. [2021-11-20 07:21:54,003 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 222 transitions. Word has length 62 [2021-11-20 07:21:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:54,005 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 222 transitions. [2021-11-20 07:21:54,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 07:21:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 222 transitions. [2021-11-20 07:21:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 07:21:54,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:54,011 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:21:54,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -699694359, now seen corresponding path program 1 times [2021-11-20 07:21:54,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:54,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820275128] [2021-11-20 07:21:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:54,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:21:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:21:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:21:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:21:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:21:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:21:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 07:21:55,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:55,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820275128] [2021-11-20 07:21:55,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820275128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:21:55,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416745229] [2021-11-20 07:21:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:55,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:21:55,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:55,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:21:55,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:21:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:55,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-20 07:21:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:56,395 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-11-20 07:21:56,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 32 [2021-11-20 07:21:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:56,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2021-11-20 07:22:00,194 INFO L354 Elim1Store]: treesize reduction 93, result has 7.9 percent of original size [2021-11-20 07:22:00,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 115 [2021-11-20 07:22:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:22:00,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:03,540 INFO L354 Elim1Store]: treesize reduction 70, result has 38.1 percent of original size [2021-11-20 07:22:03,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 122 treesize of output 128 [2021-11-20 07:22:03,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:22:03,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-20 07:22:03,626 INFO L354 Elim1Store]: treesize reduction 66, result has 5.7 percent of original size [2021-11-20 07:22:03,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 49 [2021-11-20 07:22:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:22:04,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416745229] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:22:04,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:22:04,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25, 18] total 50 [2021-11-20 07:22:04,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484890193] [2021-11-20 07:22:04,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:22:04,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-20 07:22:04,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:04,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-20 07:22:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2299, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 07:22:04,293 INFO L87 Difference]: Start difference. First operand 162 states and 222 transitions. Second operand has 50 states, 44 states have (on average 2.840909090909091) internal successors, (125), 37 states have internal predecessors, (125), 17 states have call successors, (34), 7 states have call predecessors, (34), 12 states have return successors, (32), 20 states have call predecessors, (32), 15 states have call successors, (32) [2021-11-20 07:22:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:09,595 INFO L93 Difference]: Finished difference Result 249 states and 332 transitions. [2021-11-20 07:22:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:22:09,597 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 44 states have (on average 2.840909090909091) internal successors, (125), 37 states have internal predecessors, (125), 17 states have call successors, (34), 7 states have call predecessors, (34), 12 states have return successors, (32), 20 states have call predecessors, (32), 15 states have call successors, (32) Word has length 90 [2021-11-20 07:22:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:09,599 INFO L225 Difference]: With dead ends: 249 [2021-11-20 07:22:09,600 INFO L226 Difference]: Without dead ends: 68 [2021-11-20 07:22:09,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=308, Invalid=3982, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 07:22:09,605 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:09,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1256 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2258 Invalid, 0 Unknown, 205 Unchecked, 3.0s Time] [2021-11-20 07:22:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-20 07:22:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-11-20 07:22:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 43 states have internal predecessors, (50), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-20 07:22:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2021-11-20 07:22:09,616 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 90 [2021-11-20 07:22:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:09,617 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2021-11-20 07:22:09,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 44 states have (on average 2.840909090909091) internal successors, (125), 37 states have internal predecessors, (125), 17 states have call successors, (34), 7 states have call predecessors, (34), 12 states have return successors, (32), 20 states have call predecessors, (32), 15 states have call successors, (32) [2021-11-20 07:22:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2021-11-20 07:22:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 07:22:09,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:09,626 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:22:09,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:09,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 07:22:09,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1244120169, now seen corresponding path program 1 times [2021-11-20 07:22:09,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:09,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107744535] [2021-11-20 07:22:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:09,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:22:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:22:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:22:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:22:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:22:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:22:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:22:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:22:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:22:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:22:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:22:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:22:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:22:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 07:22:10,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:10,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107744535] [2021-11-20 07:22:10,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107744535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:10,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:10,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:22:10,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149813606] [2021-11-20 07:22:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:10,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:22:10,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:22:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:22:10,316 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 07:22:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:10,368 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2021-11-20 07:22:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:22:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2021-11-20 07:22:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:10,371 INFO L225 Difference]: With dead ends: 113 [2021-11-20 07:22:10,371 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 07:22:10,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:22:10,373 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:10,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 320 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:22:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 07:22:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-20 07:22:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-20 07:22:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2021-11-20 07:22:10,384 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 96 [2021-11-20 07:22:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:10,385 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2021-11-20 07:22:10,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 07:22:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2021-11-20 07:22:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 07:22:10,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:10,387 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:22:10,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:22:10,388 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:10,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2083496473, now seen corresponding path program 1 times [2021-11-20 07:22:10,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:10,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073174705] [2021-11-20 07:22:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:10,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:22:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:22:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:22:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 07:22:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 07:22:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:22:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:22:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:22:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:22:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:22:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:22:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 07:22:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:22:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-20 07:22:10,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073174705] [2021-11-20 07:22:10,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073174705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:10,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:10,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:22:10,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053955510] [2021-11-20 07:22:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:10,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:22:10,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:10,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:22:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:22:10,909 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 6 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-20 07:22:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:11,050 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2021-11-20 07:22:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:22:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 6 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 96 [2021-11-20 07:22:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:11,051 INFO L225 Difference]: With dead ends: 76 [2021-11-20 07:22:11,051 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:22:11,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:22:11,052 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 20 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:11,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 337 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:22:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:22:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:22:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:22:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:22:11,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2021-11-20 07:22:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:11,054 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:22:11,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 6 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-20 07:22:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:22:11,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:22:11,057 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:22:11,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:22:11,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 07:22:11,548 INFO L854 garLoopResultBuilder]: At program point L6815(lines 6806 6816) the Hoare annotation is: (let ((.cse0 (mod |ensure_string_is_allocated_bounded_length_#in~max_size#1| 18446744073709551616))) (and (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (< (mod |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) .cse0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (let ((.cse2 (select |#memory_int| |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base|))) (let ((.cse1 (select .cse2 (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 8)))) (let ((.cse4 (* .cse1 (- 1)))) (let ((.cse5 (div (+ (- 1) .cse4 .cse0) (- 18446744073709551616))) (.cse6 (div .cse1 18446744073709551616)) (.cse3 (mod .cse1 18446744073709551616))) (or (and (< 0 (+ (div (+ .cse0 (- 18446744073709551609)) 18446744073709551616) 1)) (= 0 .cse1)) (and (= (select .cse2 (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| (- 18446744073709551600) .cse3)) 0) (< (+ (div (+ 18446744073709551615 .cse4) (- 18446744073709551616)) .cse5) (+ (div (+ (- 9223372036854775808) .cse1) 18446744073709551616) .cse6 1))) (and (< .cse5 (+ .cse6 1)) (<= .cse3 9223372036854775807) (= (select .cse2 (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 16 .cse3)) 0))))))) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 0) (< (mod |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551616) .cse0))) [2021-11-20 07:22:11,548 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6800 6804) no Hoare annotation was computed. [2021-11-20 07:22:11,548 INFO L854 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: (let ((.cse0 (mod |ensure_string_is_allocated_bounded_length_#in~max_size#1| 18446744073709551616))) (and (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (< (mod |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) .cse0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (< (mod |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551616) .cse0))) [2021-11-20 07:22:11,549 INFO L858 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2021-11-20 07:22:11,549 INFO L854 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (let ((.cse0 (mod |ensure_string_is_allocated_bounded_length_#in~max_size#1| 18446744073709551616))) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< (mod |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) .cse0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (< (mod |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551616) .cse0))) [2021-11-20 07:22:11,549 INFO L858 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2021-11-20 07:22:11,549 INFO L854 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: (let ((.cse0 (mod |ensure_string_is_allocated_bounded_length_#in~max_size#1| 18446744073709551616))) (and (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (< (mod |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) .cse0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (< (mod |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551616) .cse0))) [2021-11-20 07:22:11,549 INFO L858 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2021-11-20 07:22:11,550 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-11-20 07:22:11,550 INFO L854 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6800 6804) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-11-20 07:22:11,550 INFO L858 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2021-11-20 07:22:11,550 INFO L858 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2021-11-20 07:22:11,550 INFO L854 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-11-20 07:22:11,550 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-11-20 07:22:11,551 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6800 6804) no Hoare annotation was computed. [2021-11-20 07:22:11,551 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-11-20 07:22:11,551 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-11-20 07:22:11,551 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-11-20 07:22:11,551 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-11-20 07:22:11,551 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-11-20 07:22:11,551 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-11-20 07:22:11,552 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-11-20 07:22:11,552 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-11-20 07:22:11,552 INFO L861 garLoopResultBuilder]: At program point aws_string_bytesENTRY(lines 6242 6246) the Hoare annotation is: true [2021-11-20 07:22:11,552 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesEXIT(lines 6242 6246) no Hoare annotation was computed. [2021-11-20 07:22:11,552 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesFINAL(lines 6242 6246) no Hoare annotation was computed. [2021-11-20 07:22:11,552 INFO L861 garLoopResultBuilder]: At program point L6244-1(line 6244) the Hoare annotation is: true [2021-11-20 07:22:11,552 INFO L858 garLoopResultBuilder]: For program point L6244-2(line 6244) no Hoare annotation was computed. [2021-11-20 07:22:11,553 INFO L861 garLoopResultBuilder]: At program point L6244(line 6244) the Hoare annotation is: true [2021-11-20 07:22:11,553 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-11-20 07:22:11,553 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-20 07:22:11,553 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-11-20 07:22:11,553 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-20 07:22:11,553 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2021-11-20 07:22:11,554 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2021-11-20 07:22:11,554 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2021-11-20 07:22:11,554 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2021-11-20 07:22:11,554 INFO L858 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2021-11-20 07:22:11,554 INFO L858 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2021-11-20 07:22:11,554 INFO L858 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2021-11-20 07:22:11,554 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2021-11-20 07:22:11,555 INFO L858 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2021-11-20 07:22:11,555 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2021-11-20 07:22:11,555 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-11-20 07:22:11,555 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-11-20 07:22:11,555 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-11-20 07:22:11,555 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-11-20 07:22:11,555 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2021-11-20 07:22:11,556 INFO L854 garLoopResultBuilder]: At program point L9557(line 9557) the Hoare annotation is: false [2021-11-20 07:22:11,556 INFO L854 garLoopResultBuilder]: At program point L9557-1(line 9557) the Hoare annotation is: false [2021-11-20 07:22:11,556 INFO L858 garLoopResultBuilder]: For program point L9557-2(line 9557) no Hoare annotation was computed. [2021-11-20 07:22:11,556 INFO L858 garLoopResultBuilder]: For program point L9549(lines 9549 9551) no Hoare annotation was computed. [2021-11-20 07:22:11,556 INFO L858 garLoopResultBuilder]: For program point L9553-1(lines 9537 9559) no Hoare annotation was computed. [2021-11-20 07:22:11,556 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 07:22:11,556 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 07:22:11,557 INFO L858 garLoopResultBuilder]: For program point L9537(lines 9537 9559) no Hoare annotation was computed. [2021-11-20 07:22:11,557 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 07:22:11,557 INFO L854 garLoopResultBuilder]: At program point L9554(line 9554) the Hoare annotation is: false [2021-11-20 07:22:11,557 INFO L854 garLoopResultBuilder]: At program point L9554-1(line 9554) the Hoare annotation is: false [2021-11-20 07:22:11,557 INFO L858 garLoopResultBuilder]: For program point L9554-2(line 9554) no Hoare annotation was computed. [2021-11-20 07:22:11,557 INFO L858 garLoopResultBuilder]: For program point L9542-1(lines 9542 9544) no Hoare annotation was computed. [2021-11-20 07:22:11,557 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2021-11-20 07:22:11,558 INFO L854 garLoopResultBuilder]: At program point L9542-2(line 9542) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| 0)) [2021-11-20 07:22:11,558 INFO L858 garLoopResultBuilder]: For program point L9542-3(lines 9542 9543) no Hoare annotation was computed. [2021-11-20 07:22:11,558 INFO L861 garLoopResultBuilder]: At program point L9538(line 9538) the Hoare annotation is: true [2021-11-20 07:22:11,558 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2021-11-20 07:22:11,558 INFO L854 garLoopResultBuilder]: At program point L9542(line 9542) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| 0)) [2021-11-20 07:22:11,558 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-11-20 07:22:11,559 INFO L858 garLoopResultBuilder]: For program point L9538-5(lines 9538 9539) no Hoare annotation was computed. [2021-11-20 07:22:11,559 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 07:22:11,559 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-11-20 07:22:11,559 INFO L858 garLoopResultBuilder]: For program point L9538-1(lines 9538 9539) no Hoare annotation was computed. [2021-11-20 07:22:11,559 INFO L858 garLoopResultBuilder]: For program point L9542-5(lines 9542 9543) no Hoare annotation was computed. [2021-11-20 07:22:11,559 INFO L861 garLoopResultBuilder]: At program point L9538-2(line 9538) the Hoare annotation is: true [2021-11-20 07:22:11,559 INFO L858 garLoopResultBuilder]: For program point L9538-3(line 9538) no Hoare annotation was computed. [2021-11-20 07:22:11,560 INFO L858 garLoopResultBuilder]: For program point L9542-7(lines 9542 9544) no Hoare annotation was computed. [2021-11-20 07:22:11,560 INFO L854 garLoopResultBuilder]: At program point L9547(line 9547) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.offset|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| 0)) [2021-11-20 07:22:11,560 INFO L858 garLoopResultBuilder]: For program point L9547-1(line 9547) no Hoare annotation was computed. [2021-11-20 07:22:11,560 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-11-20 07:22:11,560 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2021-11-20 07:22:11,560 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-11-20 07:22:11,560 INFO L861 garLoopResultBuilder]: At program point L9560(line 9560) the Hoare annotation is: true [2021-11-20 07:22:11,561 INFO L858 garLoopResultBuilder]: For program point L9548(line 9548) no Hoare annotation was computed. [2021-11-20 07:22:11,561 INFO L854 garLoopResultBuilder]: At program point L9548-2(line 9548) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| |ULTIMATE.start_aws_string_compare_harness_#t~ite1354#1.offset|) (= |ULTIMATE.start_aws_string_compare_harness_#t~ite1354#1.base| |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.offset|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| 0)) [2021-11-20 07:22:11,561 INFO L858 garLoopResultBuilder]: For program point L9548-3(line 9548) no Hoare annotation was computed. [2021-11-20 07:22:11,561 INFO L854 garLoopResultBuilder]: At program point L9544(line 9544) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| 0)) [2021-11-20 07:22:11,561 INFO L858 garLoopResultBuilder]: For program point L9548-4(lines 9548 9552) no Hoare annotation was computed. [2021-11-20 07:22:11,561 INFO L858 garLoopResultBuilder]: For program point L9544-1(line 9544) no Hoare annotation was computed. [2021-11-20 07:22:11,561 INFO L858 garLoopResultBuilder]: For program point L9548-5(lines 9537 9559) no Hoare annotation was computed. [2021-11-20 07:22:11,562 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-20 07:22:11,562 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-20 07:22:11,562 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-20 07:22:11,562 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-20 07:22:11,562 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-20 07:22:11,562 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-20 07:22:11,562 INFO L861 garLoopResultBuilder]: At program point aws_string_compareENTRY(lines 9218 9252) the Hoare annotation is: true [2021-11-20 07:22:11,563 INFO L858 garLoopResultBuilder]: For program point L9239-2(line 9239) no Hoare annotation was computed. [2021-11-20 07:22:11,563 INFO L854 garLoopResultBuilder]: At program point L9239(line 9239) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|))) [2021-11-20 07:22:11,563 INFO L854 garLoopResultBuilder]: At program point L9239-1(line 9239) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|))) [2021-11-20 07:22:11,563 INFO L858 garLoopResultBuilder]: For program point L9219(line 9219) no Hoare annotation was computed. [2021-11-20 07:22:11,563 INFO L854 garLoopResultBuilder]: At program point L9219-2(line 9219) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|)) (and (= aws_string_compare_~a.offset aws_string_compare_~b.offset) (= aws_string_compare_~a.base aws_string_compare_~b.base))) [2021-11-20 07:22:11,563 INFO L858 garLoopResultBuilder]: For program point L9219-3(line 9219) no Hoare annotation was computed. [2021-11-20 07:22:11,563 INFO L858 garLoopResultBuilder]: For program point L9248(lines 9248 9250) no Hoare annotation was computed. [2021-11-20 07:22:11,564 INFO L854 garLoopResultBuilder]: At program point L9219-4(line 9219) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|)) (and (= aws_string_compare_~a.offset aws_string_compare_~b.offset) (= aws_string_compare_~a.base aws_string_compare_~b.base))) [2021-11-20 07:22:11,564 INFO L858 garLoopResultBuilder]: For program point L9219-5(line 9219) no Hoare annotation was computed. [2021-11-20 07:22:11,564 INFO L854 garLoopResultBuilder]: At program point L9240(line 9240) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|))) [2021-11-20 07:22:11,564 INFO L854 garLoopResultBuilder]: At program point L9240-1(line 9240) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|))) [2021-11-20 07:22:11,564 INFO L858 garLoopResultBuilder]: For program point L9240-2(line 9240) no Hoare annotation was computed. [2021-11-20 07:22:11,564 INFO L858 garLoopResultBuilder]: For program point L9220(line 9220) no Hoare annotation was computed. [2021-11-20 07:22:11,565 INFO L854 garLoopResultBuilder]: At program point L9220-2(line 9220) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|)) (and (= aws_string_compare_~a.offset aws_string_compare_~b.offset) (= aws_string_compare_~a.base aws_string_compare_~b.base))) [2021-11-20 07:22:11,565 INFO L858 garLoopResultBuilder]: For program point L9224(lines 9224 9228) no Hoare annotation was computed. [2021-11-20 07:22:11,565 INFO L858 garLoopResultBuilder]: For program point L9245(lines 9245 9247) no Hoare annotation was computed. [2021-11-20 07:22:11,565 INFO L858 garLoopResultBuilder]: For program point L9220-3(line 9220) no Hoare annotation was computed. [2021-11-20 07:22:11,565 INFO L854 garLoopResultBuilder]: At program point L9220-4(line 9220) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|)) (and (= aws_string_compare_~a.offset aws_string_compare_~b.offset) (= aws_string_compare_~a.base aws_string_compare_~b.base))) [2021-11-20 07:22:11,565 INFO L858 garLoopResultBuilder]: For program point L9220-5(line 9220) no Hoare annotation was computed. [2021-11-20 07:22:11,565 INFO L858 garLoopResultBuilder]: For program point L9237(line 9237) no Hoare annotation was computed. [2021-11-20 07:22:11,566 INFO L858 garLoopResultBuilder]: For program point L9237-2(line 9237) no Hoare annotation was computed. [2021-11-20 07:22:11,566 INFO L854 garLoopResultBuilder]: At program point L9241(line 9241) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|))) [2021-11-20 07:22:11,566 INFO L854 garLoopResultBuilder]: At program point L9241-1(line 9241) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= |aws_string_compare_#in~b.offset| |aws_string_compare_#in~a.offset|))) [2021-11-20 07:22:11,566 INFO L858 garLoopResultBuilder]: For program point L9241-2(line 9241) no Hoare annotation was computed. [2021-11-20 07:22:11,566 INFO L858 garLoopResultBuilder]: For program point L9229(lines 9229 9233) no Hoare annotation was computed. [2021-11-20 07:22:11,566 INFO L858 garLoopResultBuilder]: For program point L9221(lines 9221 9223) no Hoare annotation was computed. [2021-11-20 07:22:11,566 INFO L858 garLoopResultBuilder]: For program point L9242(lines 9242 9244) no Hoare annotation was computed. [2021-11-20 07:22:11,567 INFO L858 garLoopResultBuilder]: For program point aws_string_compareEXIT(lines 9218 9252) no Hoare annotation was computed. [2021-11-20 07:22:11,567 INFO L858 garLoopResultBuilder]: For program point aws_string_compareFINAL(lines 9218 9252) no Hoare annotation was computed. [2021-11-20 07:22:11,571 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:11,572 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:22:11,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:22:11 BoogieIcfgContainer [2021-11-20 07:22:11,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:22:11,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:22:11,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:22:11,623 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:22:11,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:50" (3/4) ... [2021-11-20 07:22:11,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 07:22:11,638 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-11-20 07:22:11,638 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-11-20 07:22:11,638 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-11-20 07:22:11,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-11-20 07:22:11,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_bytes [2021-11-20 07:22:11,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-20 07:22:11,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-20 07:22:11,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_compare [2021-11-20 07:22:11,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-11-20 07:22:11,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-11-20 07:22:11,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 125 nodes and edges [2021-11-20 07:22:11,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2021-11-20 07:22:11,673 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-20 07:22:11,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-20 07:22:11,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-20 07:22:11,680 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 07:22:11,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 07:22:11,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 07:22:11,742 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(max_size) == max_size && str == 0) && len % 18446744073709551616 < \old(max_size) % 18446744073709551616) && !(\old(max_size) == 16)) && (((0 < (\old(max_size) % 18446744073709551616 + -18446744073709551609) / 18446744073709551616 + 1 && 0 == unknown-#memory_int-unknown[\result][\result + 8]) || (unknown-#memory_int-unknown[\result][\result + -18446744073709551600 + unknown-#memory_int-unknown[\result][\result + 8] % 18446744073709551616] == 0 && (18446744073709551615 + unknown-#memory_int-unknown[\result][\result + 8] * -1) / -18446744073709551616 + (-1 + unknown-#memory_int-unknown[\result][\result + 8] * -1 + \old(max_size) % 18446744073709551616) / -18446744073709551616 < (-9223372036854775808 + unknown-#memory_int-unknown[\result][\result + 8]) / 18446744073709551616 + unknown-#memory_int-unknown[\result][\result + 8] / 18446744073709551616 + 1)) || (((-1 + unknown-#memory_int-unknown[\result][\result + 8] * -1 + \old(max_size) % 18446744073709551616) / -18446744073709551616 < unknown-#memory_int-unknown[\result][\result + 8] / 18446744073709551616 + 1 && unknown-#memory_int-unknown[\result][\result + 8] % 18446744073709551616 <= 9223372036854775807) && unknown-#memory_int-unknown[\result][\result + 16 + unknown-#memory_int-unknown[\result][\result + 8] % 18446744073709551616] == 0))) && \result == 0) && len % 18446744073709551616 < \old(max_size) % 18446744073709551616 [2021-11-20 07:22:12,718 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:22:12,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:22:12,720 INFO L158 Benchmark]: Toolchain (without parser) took 29232.54ms. Allocated memory was 111.1MB in the beginning and 362.8MB in the end (delta: 251.7MB). Free memory was 69.2MB in the beginning and 173.3MB in the end (delta: -104.0MB). Peak memory consumption was 250.0MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,720 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:22:12,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3915.28ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 69.0MB in the beginning and 54.5MB in the end (delta: 14.4MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 321.15ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 54.5MB in the beginning and 139.2MB in the end (delta: -84.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,722 INFO L158 Benchmark]: Boogie Preprocessor took 133.16ms. Allocated memory is still 197.1MB. Free memory was 139.2MB in the beginning and 131.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,722 INFO L158 Benchmark]: RCFGBuilder took 2341.57ms. Allocated memory is still 197.1MB. Free memory was 131.9MB in the beginning and 121.5MB in the end (delta: 10.3MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,723 INFO L158 Benchmark]: TraceAbstraction took 21417.37ms. Allocated memory was 197.1MB in the beginning and 362.8MB in the end (delta: 165.7MB). Free memory was 121.5MB in the beginning and 153.8MB in the end (delta: -32.3MB). Peak memory consumption was 134.5MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,723 INFO L158 Benchmark]: Witness Printer took 1096.63ms. Allocated memory is still 362.8MB. Free memory was 152.7MB in the beginning and 173.3MB in the end (delta: -20.5MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2021-11-20 07:22:12,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3915.28ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 69.0MB in the beginning and 54.5MB in the end (delta: 14.4MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 321.15ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 54.5MB in the beginning and 139.2MB in the end (delta: -84.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 133.16ms. Allocated memory is still 197.1MB. Free memory was 139.2MB in the beginning and 131.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2341.57ms. Allocated memory is still 197.1MB. Free memory was 131.9MB in the beginning and 121.5MB in the end (delta: 10.3MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. * TraceAbstraction took 21417.37ms. Allocated memory was 197.1MB in the beginning and 362.8MB in the end (delta: 165.7MB). Free memory was 121.5MB in the beginning and 153.8MB in the end (delta: -32.3MB). Peak memory consumption was 134.5MB. Max. memory is 16.1GB. * Witness Printer took 1096.63ms. Allocated memory is still 362.8MB. Free memory was 152.7MB in the beginning and 173.3MB in the end (delta: -20.5MB). Peak memory consumption was 82.3MB. 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 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.3s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 271 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 4649 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 205 IncrementalHoareTripleChecker+Unchecked, 3599 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2454 IncrementalHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 1050 mSDtfsCounter, 2454 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 409 GetRequests, 306 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=4, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 247 PreInvPairs, 266 NumberOfFragments, 538 HoareAnnotationTreeSize, 247 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 45 FomulaSimplificationsInter, 275 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 661 NumberOfCodeBlocks, 661 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 741 ConstructedInterpolants, 28 QuantifiedInterpolants, 5626 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2535 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 344/374 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6806]: Loop Invariant Derived loop invariant: (((((\old(max_size) == max_size && str == 0) && len % 18446744073709551616 < \old(max_size) % 18446744073709551616) && !(\old(max_size) == 16)) && (((0 < (\old(max_size) % 18446744073709551616 + -18446744073709551609) / 18446744073709551616 + 1 && 0 == unknown-#memory_int-unknown[\result][\result + 8]) || (unknown-#memory_int-unknown[\result][\result + -18446744073709551600 + unknown-#memory_int-unknown[\result][\result + 8] % 18446744073709551616] == 0 && (18446744073709551615 + unknown-#memory_int-unknown[\result][\result + 8] * -1) / -18446744073709551616 + (-1 + unknown-#memory_int-unknown[\result][\result + 8] * -1 + \old(max_size) % 18446744073709551616) / -18446744073709551616 < (-9223372036854775808 + unknown-#memory_int-unknown[\result][\result + 8]) / 18446744073709551616 + unknown-#memory_int-unknown[\result][\result + 8] / 18446744073709551616 + 1)) || (((-1 + unknown-#memory_int-unknown[\result][\result + 8] * -1 + \old(max_size) % 18446744073709551616) / -18446744073709551616 < unknown-#memory_int-unknown[\result][\result + 8] / 18446744073709551616 + 1 && unknown-#memory_int-unknown[\result][\result + 8] % 18446744073709551616 <= 9223372036854775807) && unknown-#memory_int-unknown[\result][\result + 16 + unknown-#memory_int-unknown[\result][\result + 8] % 18446744073709551616] == 0))) && \result == 0) && len % 18446744073709551616 < \old(max_size) % 18446744073709551616 - InvariantResult [Line: 9560]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-20 07:22:12,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806654b-9701-4665-92ec-7a2568216615/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: TRUE