./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:20:22,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:20:22,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:20:22,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:20:22,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:20:22,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:20:22,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:20:22,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:20:22,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:20:22,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:20:22,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:20:22,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:20:22,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:20:22,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:20:22,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:20:22,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:20:22,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:20:22,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:20:22,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:20:22,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:20:22,675 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:20:22,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:20:22,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:20:22,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:20:22,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:20:22,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:20:22,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:20:22,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:20:22,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:20:22,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:20:22,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:20:22,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:20:22,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:20:22,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:20:22,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:20:22,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:20:22,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:20:22,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:20:22,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:20:22,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:20:22,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:20:22,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:20:22,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:20:22,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:20:22,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:20:22,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:20:22,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:20:22,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:20:22,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:20:22,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:20:22,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:20:22,737 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:20:22,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:20:22,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:20:22,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:20:22,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:20:22,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:20:22,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:20:22,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:20:22,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:20:22,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:20:22,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:20:22,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:20:22,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:20:22,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:20:22,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:20:22,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:20:22,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:20:22,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:20:22,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:20:22,743 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:20:22,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:20:22,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:20:22,744 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2022-07-19 22:20:22,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:20:22,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:20:22,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:20:22,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:20:23,001 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:20:23,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2022-07-19 22:20:23,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25b901224/00a7a605aab24b619521c7498e7eea6c/FLAG2e836ee7b [2022-07-19 22:20:23,679 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:20:23,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2022-07-19 22:20:23,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25b901224/00a7a605aab24b619521c7498e7eea6c/FLAG2e836ee7b [2022-07-19 22:20:23,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25b901224/00a7a605aab24b619521c7498e7eea6c [2022-07-19 22:20:23,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:20:23,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:20:23,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:20:23,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:20:23,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:20:23,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:20:23" (1/1) ... [2022-07-19 22:20:23,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77df3ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:23, skipping insertion in model container [2022-07-19 22:20:23,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:20:23" (1/1) ... [2022-07-19 22:20:23,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:20:23,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:20:24,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2022-07-19 22:20:24,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2022-07-19 22:20:24,954 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,955 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,956 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,956 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,957 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,970 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,971 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,973 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:24,975 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,258 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:20:25,259 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:20:25,260 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:20:25,261 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:20:25,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:20:25,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:20:25,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:20:25,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:20:25,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:20:25,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:20:25,367 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:20:25,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,502 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:20:25,584 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:20:25,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2022-07-19 22:20:25,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2022-07-19 22:20:25,655 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,661 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,662 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,663 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,663 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,680 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,681 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,716 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:20:25,717 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:20:25,718 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:20:25,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:20:25,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:20:25,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:20:25,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:20:25,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:20:25,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:20:25,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:20:25,755 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:20:25,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:25,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:20:25,999 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:20:25,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25 WrapperNode [2022-07-19 22:20:25,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:20:26,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:20:26,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:20:26,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:20:26,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,172 INFO L137 Inliner]: procedures = 681, calls = 2272, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 374 [2022-07-19 22:20:26,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:20:26,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:20:26,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:20:26,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:20:26,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:20:26,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:20:26,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:20:26,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:20:26,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (1/1) ... [2022-07-19 22:20:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:20:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:26,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 22:20:26,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 22:20:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-07-19 22:20:26,352 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-07-19 22:20:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-07-19 22:20:26,353 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-07-19 22:20:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-07-19 22:20:26,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-07-19 22:20:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 22:20:26,354 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 22:20:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:20:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:20:26,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:20:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:20:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:20:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:20:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:20:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:20:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 22:20:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 22:20:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:20:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:20:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:20:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 22:20:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 22:20:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:20:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:20:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:20:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:20:26,612 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:20:26,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:20:26,985 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:20:26,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:20:26,991 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 22:20:26,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:20:26 BoogieIcfgContainer [2022-07-19 22:20:26,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:20:26,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:20:26,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:20:27,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:20:27,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:20:23" (1/3) ... [2022-07-19 22:20:27,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d07a0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:20:27, skipping insertion in model container [2022-07-19 22:20:27,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:25" (2/3) ... [2022-07-19 22:20:27,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d07a0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:20:27, skipping insertion in model container [2022-07-19 22:20:27,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:20:26" (3/3) ... [2022-07-19 22:20:27,006 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i [2022-07-19 22:20:27,022 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:20:27,023 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:20:27,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:20:27,077 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5eb39f1f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6be97f4e [2022-07-19 22:20:27,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:20:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 22:20:27,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-19 22:20:27,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:27,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:27,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1420882534, now seen corresponding path program 1 times [2022-07-19 22:20:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077274980] [2022-07-19 22:20:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:20:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 22:20:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:20:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 22:20:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 22:20:27,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:27,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077274980] [2022-07-19 22:20:27,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077274980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:27,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:27,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 22:20:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045553090] [2022-07-19 22:20:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:27,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 22:20:27,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 22:20:27,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 22:20:27,674 INFO L87 Difference]: Start difference. First operand has 99 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:20:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:27,726 INFO L93 Difference]: Finished difference Result 193 states and 263 transitions. [2022-07-19 22:20:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 22:20:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-07-19 22:20:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:27,738 INFO L225 Difference]: With dead ends: 193 [2022-07-19 22:20:27,738 INFO L226 Difference]: Without dead ends: 94 [2022-07-19 22:20:27,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 22:20:27,750 INFO L413 NwaCegarLoop]: 126 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, 126 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 [2022-07-19 22:20:27,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:20:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-19 22:20:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-07-19 22:20:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-19 22:20:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2022-07-19 22:20:27,808 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 49 [2022-07-19 22:20:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:27,810 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2022-07-19 22:20:27,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:20:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2022-07-19 22:20:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-19 22:20:27,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:27,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:20:27,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -206021594, now seen corresponding path program 1 times [2022-07-19 22:20:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387751099] [2022-07-19 22:20:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:20:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 22:20:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:20:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 22:20:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 22:20:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387751099] [2022-07-19 22:20:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387751099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:28,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:28,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:20:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631588155] [2022-07-19 22:20:28,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:20:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:20:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:20:28,128 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 22:20:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:28,238 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2022-07-19 22:20:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:20:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-07-19 22:20:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:28,240 INFO L225 Difference]: With dead ends: 174 [2022-07-19 22:20:28,240 INFO L226 Difference]: Without dead ends: 94 [2022-07-19 22:20:28,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:20:28,243 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 52 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:28,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 791 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:20:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-19 22:20:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-07-19 22:20:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 62 states have internal predecessors, (73), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-19 22:20:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2022-07-19 22:20:28,253 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 49 [2022-07-19 22:20:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:28,253 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2022-07-19 22:20:28,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 22:20:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2022-07-19 22:20:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 22:20:28,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:28,256 INFO L195 NwaCegarLoop]: 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] [2022-07-19 22:20:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 22:20:28,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1123217906, now seen corresponding path program 1 times [2022-07-19 22:20:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411693338] [2022-07-19 22:20:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:20:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:20:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:20:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 22:20:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:28,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:20:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:20:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:20:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:20:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 22:20:29,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:29,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411693338] [2022-07-19 22:20:29,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411693338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:29,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975159995] [2022-07-19 22:20:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:29,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:29,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:20:29,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:20:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:29,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 22:20:29,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 22:20:29,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:20:29,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975159995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:29,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:20:29,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 32 [2022-07-19 22:20:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218950683] [2022-07-19 22:20:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:20:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:29,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:20:29,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2022-07-19 22:20:29,779 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 22:20:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:30,054 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2022-07-19 22:20:30,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:20:30,055 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 83 [2022-07-19 22:20:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:30,057 INFO L225 Difference]: With dead ends: 119 [2022-07-19 22:20:30,057 INFO L226 Difference]: Without dead ends: 100 [2022-07-19 22:20:30,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 22:20:30,059 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 39 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:30,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1136 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:20:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-19 22:20:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-07-19 22:20:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.2) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2022-07-19 22:20:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2022-07-19 22:20:30,086 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 83 [2022-07-19 22:20:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:30,088 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2022-07-19 22:20:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 22:20:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2022-07-19 22:20:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 22:20:30,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:30,094 INFO L195 NwaCegarLoop]: 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] [2022-07-19 22:20:30,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:30,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:30,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -313871280, now seen corresponding path program 1 times [2022-07-19 22:20:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:30,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039773393] [2022-07-19 22:20:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:20:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:20:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:20:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 22:20:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:20:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:20:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:20:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:20:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 22:20:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039773393] [2022-07-19 22:20:30,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039773393] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:30,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264307536] [2022-07-19 22:20:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:30,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:20:30,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:20:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:31,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-19 22:20:31,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 22:20:31,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:20:31,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264307536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:31,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:20:31,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 25 [2022-07-19 22:20:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78155591] [2022-07-19 22:20:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:20:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:20:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2022-07-19 22:20:31,191 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 22:20:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:31,507 INFO L93 Difference]: Finished difference Result 170 states and 225 transitions. [2022-07-19 22:20:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:20:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 83 [2022-07-19 22:20:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:31,509 INFO L225 Difference]: With dead ends: 170 [2022-07-19 22:20:31,509 INFO L226 Difference]: Without dead ends: 123 [2022-07-19 22:20:31,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 22:20:31,511 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 63 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:31,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1336 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:20:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-19 22:20:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2022-07-19 22:20:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.2) internal successors, (84), 72 states have internal predecessors, (84), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2022-07-19 22:20:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2022-07-19 22:20:31,521 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 83 [2022-07-19 22:20:31,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:31,521 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2022-07-19 22:20:31,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 22:20:31,522 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2022-07-19 22:20:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 22:20:31,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:31,523 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:31,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:31,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-19 22:20:31,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash -723341143, now seen corresponding path program 1 times [2022-07-19 22:20:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:31,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123371399] [2022-07-19 22:20:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:31,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:20:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:20:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:20:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 22:20:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:20:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:20:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:20:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:20:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:20:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 22:20:32,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:32,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123371399] [2022-07-19 22:20:32,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123371399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:32,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798275150] [2022-07-19 22:20:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:32,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:32,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:32,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:20:32,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:20:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:32,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 22:20:32,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 22:20:32,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:20:32,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798275150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:32,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:20:32,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [17] total 32 [2022-07-19 22:20:32,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414497347] [2022-07-19 22:20:32,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:32,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 22:20:32,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:32,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 22:20:32,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2022-07-19 22:20:32,912 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 22:20:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:33,384 INFO L93 Difference]: Finished difference Result 172 states and 226 transitions. [2022-07-19 22:20:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:20:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92 [2022-07-19 22:20:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:33,386 INFO L225 Difference]: With dead ends: 172 [2022-07-19 22:20:33,386 INFO L226 Difference]: Without dead ends: 124 [2022-07-19 22:20:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2022-07-19 22:20:33,388 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 79 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:33,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1484 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:20:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-19 22:20:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2022-07-19 22:20:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.2) internal successors, (84), 73 states have internal predecessors, (84), 26 states have call successors, (26), 9 states have call predecessors, (26), 10 states have return successors, (29), 24 states have call predecessors, (29), 25 states have call successors, (29) [2022-07-19 22:20:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2022-07-19 22:20:33,406 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 92 [2022-07-19 22:20:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:33,407 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2022-07-19 22:20:33,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 22:20:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2022-07-19 22:20:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 22:20:33,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:33,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:33,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:33,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash -785380757, now seen corresponding path program 1 times [2022-07-19 22:20:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:33,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872930588] [2022-07-19 22:20:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:33,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:20:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:20:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:20:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 22:20:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:20:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:20:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:20:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:20:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:20:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 22:20:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:34,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872930588] [2022-07-19 22:20:34,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872930588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:34,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565690488] [2022-07-19 22:20:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:34,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:34,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:20:34,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:20:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:34,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-19 22:20:34,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 22:20:34,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:20:34,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565690488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:34,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:20:34,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 26 [2022-07-19 22:20:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345290132] [2022-07-19 22:20:34,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:20:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:20:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:20:34,557 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 22:20:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:34,860 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2022-07-19 22:20:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:20:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92 [2022-07-19 22:20:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:34,862 INFO L225 Difference]: With dead ends: 154 [2022-07-19 22:20:34,862 INFO L226 Difference]: Without dead ends: 127 [2022-07-19 22:20:34,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 22:20:34,864 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 56 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:34,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1378 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:20:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-19 22:20:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2022-07-19 22:20:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 78 states have internal predecessors, (89), 29 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (32), 27 states have call predecessors, (32), 28 states have call successors, (32) [2022-07-19 22:20:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 150 transitions. [2022-07-19 22:20:34,876 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 150 transitions. Word has length 92 [2022-07-19 22:20:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:34,877 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 150 transitions. [2022-07-19 22:20:34,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 22:20:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 150 transitions. [2022-07-19 22:20:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 22:20:34,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:34,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:34,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:35,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:35,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -871660918, now seen corresponding path program 1 times [2022-07-19 22:20:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:35,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867007062] [2022-07-19 22:20:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:35,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:20:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:20:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:20:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 22:20:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:20:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:20:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:20:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:20:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:20:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 22:20:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:20:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:20:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:20:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-19 22:20:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:35,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867007062] [2022-07-19 22:20:35,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867007062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:35,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165162981] [2022-07-19 22:20:35,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:35,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:35,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:35,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:20:35,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:20:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:35,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 22:20:35,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-19 22:20:35,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:20:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-19 22:20:36,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165162981] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:20:36,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:20:36,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 26 [2022-07-19 22:20:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491104432] [2022-07-19 22:20:36,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:20:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 22:20:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 22:20:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:20:36,126 INFO L87 Difference]: Start difference. First operand 115 states and 150 transitions. Second operand has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 19 states have internal predecessors, (82), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) [2022-07-19 22:20:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:36,711 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2022-07-19 22:20:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:20:36,712 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 19 states have internal predecessors, (82), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) Word has length 111 [2022-07-19 22:20:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:36,713 INFO L225 Difference]: With dead ends: 148 [2022-07-19 22:20:36,713 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 22:20:36,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 22:20:36,715 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:36,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 303 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:20:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 22:20:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 22:20:36,716 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) [2022-07-19 22:20:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 22:20:36,716 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2022-07-19 22:20:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:36,717 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 22:20:36,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 19 states have internal predecessors, (82), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) [2022-07-19 22:20:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 22:20:36,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 22:20:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 22:20:36,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:36,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:36,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 22:20:37,196 INFO L895 garLoopResultBuilder]: At program point L6816(lines 6807 6817) the Hoare annotation is: (and (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset|) (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset|) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-07-19 22:20:37,197 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6801 6805) no Hoare annotation was computed. [2022-07-19 22:20:37,197 INFO L899 garLoopResultBuilder]: For program point L6811-1(lines 6811 6812) no Hoare annotation was computed. [2022-07-19 22:20:37,197 INFO L895 garLoopResultBuilder]: At program point L6811(line 6811) the Hoare annotation is: (and (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset|) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-07-19 22:20:37,197 INFO L899 garLoopResultBuilder]: For program point L6811-5(lines 6811 6812) no Hoare annotation was computed. [2022-07-19 22:20:37,197 INFO L899 garLoopResultBuilder]: For program point L6808-1(line 6808) no Hoare annotation was computed. [2022-07-19 22:20:37,198 INFO L895 garLoopResultBuilder]: At program point L6808(line 6808) the Hoare annotation is: (let ((.cse0 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)))) (and (or (<= 0 (+ (* 18446744073709551616 (div (+ (* (- 1) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) 15) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|)) .cse0) (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (or .cse0 (let ((.cse1 (* 18446744073709551616 (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616)))) (<= .cse1 (+ |ensure_string_is_allocated_bounded_length_~len~1#1| (* 18446744073709551616 (div (+ .cse1 15 (* (- 1) |ensure_string_is_allocated_bounded_length_~len~1#1|)) 18446744073709551616)))))) (= |old(#valid)| |#valid|))) [2022-07-19 22:20:37,198 INFO L899 garLoopResultBuilder]: For program point L6811-3(line 6811) no Hoare annotation was computed. [2022-07-19 22:20:37,198 INFO L895 garLoopResultBuilder]: At program point L6811-2(line 6811) the Hoare annotation is: (and (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset|) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-07-19 22:20:37,198 INFO L895 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-07-19 22:20:37,198 INFO L899 garLoopResultBuilder]: For program point L6803-1(line 6803) no Hoare annotation was computed. [2022-07-19 22:20:37,199 INFO L895 garLoopResultBuilder]: At program point L6803(line 6803) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= (+ (- 16) |ensure_string_is_allocated_bounded_length_~max_size#1|) 0)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-07-19 22:20:37,199 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6801 6805) 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|)) [2022-07-19 22:20:37,199 INFO L899 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2022-07-19 22:20:37,199 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6801 6805) no Hoare annotation was computed. [2022-07-19 22:20:37,199 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6883 6888) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-07-19 22:20:37,199 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6883 6888) no Hoare annotation was computed. [2022-07-19 22:20:37,199 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6883 6888) no Hoare annotation was computed. [2022-07-19 22:20:37,200 INFO L899 garLoopResultBuilder]: For program point L6884-1(lines 6884 6886) no Hoare annotation was computed. [2022-07-19 22:20:37,200 INFO L895 garLoopResultBuilder]: At program point L6884(lines 6884 6886) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-07-19 22:20:37,200 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-07-19 22:20:37,200 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-07-19 22:20:37,200 INFO L902 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2022-07-19 22:20:37,200 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-07-19 22:20:37,200 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-07-19 22:20:37,201 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-07-19 22:20:37,201 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-07-19 22:20:37,201 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6890 6892) no Hoare annotation was computed. [2022-07-19 22:20:37,201 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6890 6892) no Hoare annotation was computed. [2022-07-19 22:20:37,201 INFO L902 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6890 6892) the Hoare annotation is: true [2022-07-19 22:20:37,201 INFO L902 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6253 6258) the Hoare annotation is: true [2022-07-19 22:20:37,201 INFO L899 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L899 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L899 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L899 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-07-19 22:20:37,202 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-07-19 22:20:37,203 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-07-19 22:20:37,203 INFO L899 garLoopResultBuilder]: For program point L7455-1(line 7455) no Hoare annotation was computed. [2022-07-19 22:20:37,203 INFO L902 garLoopResultBuilder]: At program point L8925(line 8925) the Hoare annotation is: true [2022-07-19 22:20:37,203 INFO L895 garLoopResultBuilder]: At program point L7455(line 7455) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2022-07-19 22:20:37,203 INFO L895 garLoopResultBuilder]: At program point L7455-2(lines 7437 7456) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2022-07-19 22:20:37,203 INFO L895 garLoopResultBuilder]: At program point L8921(line 8921) the Hoare annotation is: false [2022-07-19 22:20:37,203 INFO L895 garLoopResultBuilder]: At program point L8921-1(line 8921) the Hoare annotation is: false [2022-07-19 22:20:37,204 INFO L899 garLoopResultBuilder]: For program point L8921-2(line 8921) no Hoare annotation was computed. [2022-07-19 22:20:37,204 INFO L899 garLoopResultBuilder]: For program point L7439(line 7439) no Hoare annotation was computed. [2022-07-19 22:20:37,204 INFO L899 garLoopResultBuilder]: For program point L7439-5(line 7439) no Hoare annotation was computed. [2022-07-19 22:20:37,204 INFO L895 garLoopResultBuilder]: At program point L7439-4(line 7439) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2022-07-19 22:20:37,204 INFO L899 garLoopResultBuilder]: For program point L7439-3(line 7439) no Hoare annotation was computed. [2022-07-19 22:20:37,204 INFO L895 garLoopResultBuilder]: At program point L7439-2(line 7439) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2022-07-19 22:20:37,204 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 22:20:37,205 INFO L895 garLoopResultBuilder]: At program point L8922(line 8922) the Hoare annotation is: false [2022-07-19 22:20:37,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 22:20:37,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 22:20:37,205 INFO L899 garLoopResultBuilder]: For program point L8918-1(line 8918) no Hoare annotation was computed. [2022-07-19 22:20:37,205 INFO L899 garLoopResultBuilder]: For program point L8922-1(line 8922) no Hoare annotation was computed. [2022-07-19 22:20:37,205 INFO L895 garLoopResultBuilder]: At program point L8918(line 8918) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-07-19 22:20:37,205 INFO L895 garLoopResultBuilder]: At program point L7440-2(line 7440) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2022-07-19 22:20:37,206 INFO L899 garLoopResultBuilder]: For program point L7440(line 7440) no Hoare annotation was computed. [2022-07-19 22:20:37,206 INFO L899 garLoopResultBuilder]: For program point L7440-5(line 7440) no Hoare annotation was computed. [2022-07-19 22:20:37,206 INFO L895 garLoopResultBuilder]: At program point L7440-4(line 7440) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2022-07-19 22:20:37,206 INFO L899 garLoopResultBuilder]: For program point L7440-3(line 7440) no Hoare annotation was computed. [2022-07-19 22:20:37,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 22:20:37,206 INFO L899 garLoopResultBuilder]: For program point L8919(lines 8919 8923) no Hoare annotation was computed. [2022-07-19 22:20:37,207 INFO L899 garLoopResultBuilder]: For program point L7441(lines 7441 7445) no Hoare annotation was computed. [2022-07-19 22:20:37,207 INFO L899 garLoopResultBuilder]: For program point L8911(lines 8911 8924) no Hoare annotation was computed. [2022-07-19 22:20:37,207 INFO L899 garLoopResultBuilder]: For program point L7446(lines 7446 7454) no Hoare annotation was computed. [2022-07-19 22:20:37,207 INFO L895 garLoopResultBuilder]: At program point L8916(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-07-19 22:20:37,207 INFO L899 garLoopResultBuilder]: For program point L8916-1(lines 8916 8918) no Hoare annotation was computed. [2022-07-19 22:20:37,207 INFO L895 garLoopResultBuilder]: At program point L8916-2(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-07-19 22:20:37,207 INFO L895 garLoopResultBuilder]: At program point L8920(line 8920) the Hoare annotation is: false [2022-07-19 22:20:37,207 INFO L895 garLoopResultBuilder]: At program point L8920-1(line 8920) the Hoare annotation is: false [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8920-2(line 8920) no Hoare annotation was computed. [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8912-3(line 8912) no Hoare annotation was computed. [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8916-7(lines 8916 8918) no Hoare annotation was computed. [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8912-5(lines 8912 8913) no Hoare annotation was computed. [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8916-3(lines 8916 8917) no Hoare annotation was computed. [2022-07-19 22:20:37,208 INFO L902 garLoopResultBuilder]: At program point L8912(line 8912) the Hoare annotation is: true [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8912-1(lines 8912 8913) no Hoare annotation was computed. [2022-07-19 22:20:37,208 INFO L899 garLoopResultBuilder]: For program point L8916-5(lines 8916 8917) no Hoare annotation was computed. [2022-07-19 22:20:37,209 INFO L902 garLoopResultBuilder]: At program point L8912-2(line 8912) the Hoare annotation is: true [2022-07-19 22:20:37,209 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-07-19 22:20:37,209 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-07-19 22:20:37,209 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-07-19 22:20:37,209 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-07-19 22:20:37,209 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-07-19 22:20:37,209 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-07-19 22:20:37,210 INFO L902 garLoopResultBuilder]: At program point aws_array_eq_ignore_caseENTRY(lines 7986 8016) the Hoare annotation is: true [2022-07-19 22:20:37,210 INFO L899 garLoopResultBuilder]: For program point L8005-4(lines 8005 8011) no Hoare annotation was computed. [2022-07-19 22:20:37,210 INFO L899 garLoopResultBuilder]: For program point L7994(lines 7991 8016) no Hoare annotation was computed. [2022-07-19 22:20:37,210 INFO L899 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseFINAL(lines 7986 8016) no Hoare annotation was computed. [2022-07-19 22:20:37,210 INFO L902 garLoopResultBuilder]: At program point L7992-1(line 7992) the Hoare annotation is: true [2022-07-19 22:20:37,210 INFO L902 garLoopResultBuilder]: At program point L7992(line 7992) the Hoare annotation is: true [2022-07-19 22:20:37,210 INFO L899 garLoopResultBuilder]: For program point L8006(lines 8006 8010) no Hoare annotation was computed. [2022-07-19 22:20:37,211 INFO L902 garLoopResultBuilder]: At program point L8005-3(lines 8005 8011) the Hoare annotation is: true [2022-07-19 22:20:37,211 INFO L899 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseEXIT(lines 7986 8016) no Hoare annotation was computed. [2022-07-19 22:20:37,211 INFO L899 garLoopResultBuilder]: For program point L8005-2(lines 8005 8011) no Hoare annotation was computed. [2022-07-19 22:20:37,220 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:37,222 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 22:20:37,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:20:37 BoogieIcfgContainer [2022-07-19 22:20:37,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 22:20:37,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 22:20:37,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 22:20:37,246 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 22:20:37,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:20:26" (3/4) ... [2022-07-19 22:20:37,249 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 22:20:37,255 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2022-07-19 22:20:37,255 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq_ignore_case [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-07-19 22:20:37,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2022-07-19 22:20:37,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-19 22:20:37,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-19 22:20:37,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 22:20:37,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 22:20:37,291 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0 <= str && 0 <= \result) && !(str == 0)) && (\old(max_size) == max_size || -16 + max_size == 0)) && !(\result == 0)) && !(\old(max_size) == 16) [2022-07-19 22:20:37,403 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 22:20:37,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 22:20:37,404 INFO L158 Benchmark]: Toolchain (without parser) took 13546.67ms. Allocated memory was 98.6MB in the beginning and 207.6MB in the end (delta: 109.1MB). Free memory was 57.3MB in the beginning and 65.8MB in the end (delta: -8.5MB). Peak memory consumption was 99.9MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,404 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:20:37,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2138.56ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 57.1MB in the beginning and 58.2MB in the end (delta: -1.1MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 172.01ms. Allocated memory is still 125.8MB. Free memory was 58.0MB in the beginning and 49.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,405 INFO L158 Benchmark]: Boogie Preprocessor took 86.72ms. Allocated memory is still 125.8MB. Free memory was 49.0MB in the beginning and 44.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,405 INFO L158 Benchmark]: RCFGBuilder took 731.69ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 44.8MB in the beginning and 88.3MB in the end (delta: -43.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,406 INFO L158 Benchmark]: TraceAbstraction took 10251.20ms. Allocated memory was 167.8MB in the beginning and 207.6MB in the end (delta: 39.8MB). Free memory was 88.1MB in the beginning and 84.7MB in the end (delta: 3.4MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,406 INFO L158 Benchmark]: Witness Printer took 157.47ms. Allocated memory is still 207.6MB. Free memory was 84.7MB in the beginning and 65.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-19 22:20:37,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2138.56ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 57.1MB in the beginning and 58.2MB in the end (delta: -1.1MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 172.01ms. Allocated memory is still 125.8MB. Free memory was 58.0MB in the beginning and 49.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.72ms. Allocated memory is still 125.8MB. Free memory was 49.0MB in the beginning and 44.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 731.69ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 44.8MB in the beginning and 88.3MB in the end (delta: -43.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10251.20ms. Allocated memory was 167.8MB in the beginning and 207.6MB in the end (delta: 39.8MB). Free memory was 88.1MB in the beginning and 84.7MB in the end (delta: 3.4MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. * Witness Printer took 157.47ms. Allocated memory is still 207.6MB. Free memory was 84.7MB in the beginning and 65.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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 10 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 402 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346 mSDsluCounter, 6554 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5825 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1704 IncrementalHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 729 mSDtfsCounter, 1704 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 853 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=6, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 171 PreInvPairs, 207 NumberOfFragments, 364 HoareAnnotationTreeSize, 171 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 36 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1118 ConstructedInterpolants, 0 QuantifiedInterpolants, 2658 SizeOfPredicates, 46 NumberOfNonLiveVariables, 4465 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 609/687 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: 7437]: Loop Invariant Derived loop invariant: (str_a == 0 && str_a == 0) || (str_b == 0 && 0 == str_b) - InvariantResult [Line: 8925]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8005]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6807]: Loop Invariant Derived loop invariant: ((((0 <= str && 0 <= \result) && !(str == 0)) && (\old(max_size) == max_size || -16 + max_size == 0)) && !(\result == 0)) && !(\old(max_size) == 16) RESULT: Ultimate proved your program to be correct! [2022-07-19 22:20:37,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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