./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-01-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ea18b6ba0d977117db11fbdff34c486def646c3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 18:09:10,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 18:09:10,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 18:09:10,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 18:09:10,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 18:09:10,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 18:09:10,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 18:09:10,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 18:09:10,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 18:09:10,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 18:09:10,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 18:09:10,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 18:09:10,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 18:09:10,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 18:09:10,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 18:09:10,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 18:09:10,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 18:09:10,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 18:09:10,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 18:09:10,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 18:09:10,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 18:09:10,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 18:09:10,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 18:09:10,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 18:09:10,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 18:09:10,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 18:09:10,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 18:09:10,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 18:09:10,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 18:09:10,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 18:09:10,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 18:09:10,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 18:09:10,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 18:09:10,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 18:09:10,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 18:09:10,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 18:09:10,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 18:09:10,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 18:09:10,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 18:09:10,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 18:09:10,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 18:09:10,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 18:09:10,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 18:09:10,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 18:09:10,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 18:09:10,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 18:09:10,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 18:09:10,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 18:09:10,668 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 18:09:10,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 18:09:10,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 18:09:10,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 18:09:10,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 18:09:10,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 18:09:10,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 18:09:10,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 18:09:10,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 18:09:10,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 18:09:10,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 18:09:10,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:09:10,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 18:09:10,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 18:09:10,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 18:09:10,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 18:09:10,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 18:09:10,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ea18b6ba0d977117db11fbdff34c486def646c3 [2021-08-30 18:09:10,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 18:09:10,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 18:09:10,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 18:09:10,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 18:09:10,960 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 18:09:10,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-2.i [2021-08-30 18:09:11,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52fd1da4/6750a08976974d8d8e032700ca3e8e9e/FLAG071062f4e [2021-08-30 18:09:11,375 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 18:09:11,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i [2021-08-30 18:09:11,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52fd1da4/6750a08976974d8d8e032700ca3e8e9e/FLAG071062f4e [2021-08-30 18:09:11,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52fd1da4/6750a08976974d8d8e032700ca3e8e9e [2021-08-30 18:09:11,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 18:09:11,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 18:09:11,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 18:09:11,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 18:09:11,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 18:09:11,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e6769f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11, skipping insertion in model container [2021-08-30 18:09:11,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 18:09:11,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 18:09:11,666 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22034,22047] [2021-08-30 18:09:11,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22307,22320] [2021-08-30 18:09:11,671 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22516,22529] [2021-08-30 18:09:11,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22586,22599] [2021-08-30 18:09:11,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22853,22866] [2021-08-30 18:09:11,676 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22961,22974] [2021-08-30 18:09:11,678 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23192,23205] [2021-08-30 18:09:11,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23272,23285] [2021-08-30 18:09:11,681 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23351,23364] [2021-08-30 18:09:11,682 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23484,23497] [2021-08-30 18:09:11,684 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23662,23675] [2021-08-30 18:09:11,685 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23740,23753] [2021-08-30 18:09:11,686 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23817,23830] [2021-08-30 18:09:11,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:09:11,703 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 18:09:11,729 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22034,22047] [2021-08-30 18:09:11,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22307,22320] [2021-08-30 18:09:11,732 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22516,22529] [2021-08-30 18:09:11,732 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22586,22599] [2021-08-30 18:09:11,734 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22853,22866] [2021-08-30 18:09:11,734 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[22961,22974] [2021-08-30 18:09:11,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23192,23205] [2021-08-30 18:09:11,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23272,23285] [2021-08-30 18:09:11,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23351,23364] [2021-08-30 18:09:11,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23484,23497] [2021-08-30 18:09:11,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23662,23675] [2021-08-30 18:09:11,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23740,23753] [2021-08-30 18:09:11,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i[23817,23830] [2021-08-30 18:09:11,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:09:11,756 INFO L208 MainTranslator]: Completed translation [2021-08-30 18:09:11,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11 WrapperNode [2021-08-30 18:09:11,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 18:09:11,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 18:09:11,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 18:09:11,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 18:09:11,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 18:09:11,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 18:09:11,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 18:09:11,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 18:09:11,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (1/1) ... [2021-08-30 18:09:11,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:09:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:09:11,837 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) [2021-08-30 18:09:11,853 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 [2021-08-30 18:09:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 18:09:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 18:09:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 18:09:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 18:09:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 18:09:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 18:09:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 18:09:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 18:09:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 18:09:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 18:09:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 18:09:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 18:09:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 18:09:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 18:09:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 18:09:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 18:09:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 18:09:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 18:09:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 18:09:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 18:09:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 18:09:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 18:09:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 18:09:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 18:09:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 18:09:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 18:09:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 18:09:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 18:09:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 18:09:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 18:09:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 18:09:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 18:09:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 18:09:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 18:09:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 18:09:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 18:09:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 18:09:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 18:09:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 18:09:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 18:09:11,898 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 18:09:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 18:09:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 18:09:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 18:09:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 18:09:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 18:09:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 18:09:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 18:09:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 18:09:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 18:09:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 18:09:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 18:09:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 18:09:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 18:09:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 18:09:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 18:09:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 18:09:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 18:09:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 18:09:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 18:09:12,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 18:09:12,278 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-08-30 18:09:12,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:09:12 BoogieIcfgContainer [2021-08-30 18:09:12,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 18:09:12,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 18:09:12,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 18:09:12,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 18:09:12,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:09:11" (1/3) ... [2021-08-30 18:09:12,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73104dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:09:12, skipping insertion in model container [2021-08-30 18:09:12,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:09:11" (2/3) ... [2021-08-30 18:09:12,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73104dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:09:12, skipping insertion in model container [2021-08-30 18:09:12,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:09:12" (3/3) ... [2021-08-30 18:09:12,287 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2021-08-30 18:09:12,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 18:09:12,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2021-08-30 18:09:12,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 18:09:12,330 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 18:09:12,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2021-08-30 18:09:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 115 states have (on average 2.1652173913043478) internal successors, (249), 195 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 18:09:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:09:12,351 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:12,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:12,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:12,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1164341321, now seen corresponding path program 1 times [2021-08-30 18:09:12,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:12,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792601378] [2021-08-30 18:09:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:12,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:12,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:12,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792601378] [2021-08-30 18:09:12,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792601378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:12,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:12,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:09:12,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854637961] [2021-08-30 18:09:12,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:12,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:12,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:12,567 INFO L87 Difference]: Start difference. First operand has 200 states, 115 states have (on average 2.1652173913043478) internal successors, (249), 195 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:12,865 INFO L93 Difference]: Finished difference Result 201 states and 212 transitions. [2021-08-30 18:09:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:12,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 18:09:12,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:12,872 INFO L225 Difference]: With dead ends: 201 [2021-08-30 18:09:12,872 INFO L226 Difference]: Without dead ends: 197 [2021-08-30 18:09:12,873 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.07ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:12,875 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.55ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:12,876 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 8 Invalid, 427 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [15 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 265.55ms Time] [2021-08-30 18:09:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-30 18:09:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2021-08-30 18:09:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 117 states have (on average 1.7264957264957266) internal successors, (202), 188 states have internal predecessors, (202), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2021-08-30 18:09:12,904 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 7 [2021-08-30 18:09:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:12,904 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2021-08-30 18:09:12,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2021-08-30 18:09:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:09:12,905 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:12,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:12,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 18:09:12,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1164341322, now seen corresponding path program 1 times [2021-08-30 18:09:12,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:12,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595423750] [2021-08-30 18:09:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:12,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:12,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:12,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595423750] [2021-08-30 18:09:12,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595423750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:12,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:12,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:09:12,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069528501] [2021-08-30 18:09:12,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:12,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:12,959 INFO L87 Difference]: Start difference. First operand 192 states and 205 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:13,263 INFO L93 Difference]: Finished difference Result 222 states and 234 transitions. [2021-08-30 18:09:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:13,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 18:09:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:13,268 INFO L225 Difference]: With dead ends: 222 [2021-08-30 18:09:13,268 INFO L226 Difference]: Without dead ends: 222 [2021-08-30 18:09:13,268 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.94ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:13,270 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 178 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 284.35ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:13,271 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 7 Invalid, 436 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [13 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 284.35ms Time] [2021-08-30 18:09:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-08-30 18:09:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 202. [2021-08-30 18:09:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 134 states have (on average 1.664179104477612) internal successors, (223), 198 states have internal predecessors, (223), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2021-08-30 18:09:13,282 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 7 [2021-08-30 18:09:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:13,283 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2021-08-30 18:09:13,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2021-08-30 18:09:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 18:09:13,283 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:13,283 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:13,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 18:09:13,283 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2054455159, now seen corresponding path program 1 times [2021-08-30 18:09:13,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:13,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944942426] [2021-08-30 18:09:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:13,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:13,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:13,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:13,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944942426] [2021-08-30 18:09:13,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944942426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:13,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:13,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:13,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23439191] [2021-08-30 18:09:13,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:13,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:13,370 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:13,669 INFO L93 Difference]: Finished difference Result 217 states and 229 transitions. [2021-08-30 18:09:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:13,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 18:09:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:13,670 INFO L225 Difference]: With dead ends: 217 [2021-08-30 18:09:13,670 INFO L226 Difference]: Without dead ends: 217 [2021-08-30 18:09:13,671 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.39ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:13,672 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 175 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 288.43ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:13,672 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 7 Invalid, 421 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 288.43ms Time] [2021-08-30 18:09:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-08-30 18:09:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2021-08-30 18:09:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 133 states have (on average 1.6541353383458646) internal successors, (220), 196 states have internal predecessors, (220), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-08-30 18:09:13,690 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 9 [2021-08-30 18:09:13,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:13,690 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-08-30 18:09:13,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:13,690 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-08-30 18:09:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:09:13,690 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:13,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:13,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 18:09:13,691 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:13,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1492111941, now seen corresponding path program 1 times [2021-08-30 18:09:13,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:13,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050794925] [2021-08-30 18:09:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:13,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:13,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:13,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050794925] [2021-08-30 18:09:13,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050794925] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:13,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:13,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:09:13,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886463786] [2021-08-30 18:09:13,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:09:13,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:09:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:13,776 INFO L87 Difference]: Start difference. First operand 200 states and 223 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:14,213 INFO L93 Difference]: Finished difference Result 199 states and 222 transitions. [2021-08-30 18:09:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:09:14,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-30 18:09:14,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:14,214 INFO L225 Difference]: With dead ends: 199 [2021-08-30 18:09:14,214 INFO L226 Difference]: Without dead ends: 199 [2021-08-30 18:09:14,214 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.48ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:14,215 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 314.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 387.84ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:14,215 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 923 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [2 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 387.84ms Time] [2021-08-30 18:09:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-08-30 18:09:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-08-30 18:09:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 133 states have (on average 1.6466165413533835) internal successors, (219), 195 states have internal predecessors, (219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2021-08-30 18:09:14,220 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 15 [2021-08-30 18:09:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:14,221 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2021-08-30 18:09:14,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2021-08-30 18:09:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:09:14,221 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:14,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:14,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 18:09:14,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1492111940, now seen corresponding path program 1 times [2021-08-30 18:09:14,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:14,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807797209] [2021-08-30 18:09:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:14,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:14,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:14,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807797209] [2021-08-30 18:09:14,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807797209] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:14,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:14,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:09:14,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195748484] [2021-08-30 18:09:14,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:09:14,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:09:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:14,329 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:14,716 INFO L93 Difference]: Finished difference Result 198 states and 221 transitions. [2021-08-30 18:09:14,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:09:14,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-30 18:09:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:14,717 INFO L225 Difference]: With dead ends: 198 [2021-08-30 18:09:14,717 INFO L226 Difference]: Without dead ends: 198 [2021-08-30 18:09:14,717 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.38ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:14,718 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 359.73ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:14,718 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 920 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [2 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 359.73ms Time] [2021-08-30 18:09:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-30 18:09:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-08-30 18:09:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 194 states have internal predecessors, (218), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-08-30 18:09:14,735 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 15 [2021-08-30 18:09:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:14,736 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-08-30 18:09:14,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-08-30 18:09:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 18:09:14,736 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:14,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:14,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 18:09:14,737 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr19ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:14,737 INFO L82 PathProgramCache]: Analyzing trace with hash 331044621, now seen corresponding path program 1 times [2021-08-30 18:09:14,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:14,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798939123] [2021-08-30 18:09:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:14,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:14,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:14,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798939123] [2021-08-30 18:09:14,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798939123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:14,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:14,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:14,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995972808] [2021-08-30 18:09:14,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:14,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:14,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:14,790 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:15,051 INFO L93 Difference]: Finished difference Result 199 states and 222 transitions. [2021-08-30 18:09:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:15,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-30 18:09:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:15,052 INFO L225 Difference]: With dead ends: 199 [2021-08-30 18:09:15,052 INFO L226 Difference]: Without dead ends: 199 [2021-08-30 18:09:15,053 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.93ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:15,056 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.27ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:15,056 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 555 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [1 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 251.27ms Time] [2021-08-30 18:09:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-08-30 18:09:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-08-30 18:09:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 134 states have (on average 1.6343283582089552) internal successors, (219), 195 states have internal predecessors, (219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2021-08-30 18:09:15,060 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 17 [2021-08-30 18:09:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:15,060 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2021-08-30 18:09:15,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2021-08-30 18:09:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 18:09:15,061 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:15,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:15,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 18:09:15,061 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:15,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1404699164, now seen corresponding path program 1 times [2021-08-30 18:09:15,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:15,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737665961] [2021-08-30 18:09:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:15,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:15,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:15,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737665961] [2021-08-30 18:09:15,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737665961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:15,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:15,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:15,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020883429] [2021-08-30 18:09:15,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 18:09:15,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 18:09:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 18:09:15,183 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:15,749 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2021-08-30 18:09:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 18:09:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 18:09:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:15,750 INFO L225 Difference]: With dead ends: 199 [2021-08-30 18:09:15,750 INFO L226 Difference]: Without dead ends: 199 [2021-08-30 18:09:15,751 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 86.48ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-30 18:09:15,751 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 171 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 493.49ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:15,751 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 22 Invalid, 1292 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [13 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 493.49ms Time] [2021-08-30 18:09:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-08-30 18:09:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-08-30 18:09:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.626865671641791) internal successors, (218), 194 states have internal predecessors, (218), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-08-30 18:09:15,754 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 18 [2021-08-30 18:09:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:15,754 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-08-30 18:09:15,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-08-30 18:09:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 18:09:15,755 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:15,755 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:15,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 18:09:15,755 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:15,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1404699165, now seen corresponding path program 1 times [2021-08-30 18:09:15,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:15,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227374393] [2021-08-30 18:09:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:15,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:15,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:15,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227374393] [2021-08-30 18:09:15,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227374393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:15,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:15,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:15,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309951505] [2021-08-30 18:09:15,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 18:09:15,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 18:09:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 18:09:15,879 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:16,434 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-08-30 18:09:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 18:09:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 18:09:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:16,435 INFO L225 Difference]: With dead ends: 198 [2021-08-30 18:09:16,435 INFO L226 Difference]: Without dead ends: 198 [2021-08-30 18:09:16,435 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 108.25ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-30 18:09:16,435 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 168 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 397.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 487.26ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:16,436 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 22 Invalid, 1288 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [13 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 487.26ms Time] [2021-08-30 18:09:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-30 18:09:16,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-08-30 18:09:16,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 134 states have (on average 1.6194029850746268) internal successors, (217), 193 states have internal predecessors, (217), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2021-08-30 18:09:16,439 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 18 [2021-08-30 18:09:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:16,439 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2021-08-30 18:09:16,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2021-08-30 18:09:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 18:09:16,439 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:16,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:16,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 18:09:16,439 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr19ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash 307937042, now seen corresponding path program 1 times [2021-08-30 18:09:16,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:16,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786624441] [2021-08-30 18:09:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:16,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:16,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:16,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786624441] [2021-08-30 18:09:16,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786624441] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:16,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:16,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:16,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673633460] [2021-08-30 18:09:16,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:09:16,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:09:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:16,530 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:17,088 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2021-08-30 18:09:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 18:09:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-30 18:09:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:17,089 INFO L225 Difference]: With dead ends: 289 [2021-08-30 18:09:17,089 INFO L226 Difference]: Without dead ends: 289 [2021-08-30 18:09:17,090 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 85.62ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-08-30 18:09:17,090 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 109 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 397.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.31ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:17,090 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 19 Invalid, 1257 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [5 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 481.31ms Time] [2021-08-30 18:09:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-08-30 18:09:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 194. [2021-08-30 18:09:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 132 states have (on average 1.621212121212121) internal successors, (214), 190 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2021-08-30 18:09:17,093 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 19 [2021-08-30 18:09:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:17,093 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2021-08-30 18:09:17,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2021-08-30 18:09:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 18:09:17,094 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:17,094 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:17,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 18:09:17,094 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:17,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:17,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1873843689, now seen corresponding path program 1 times [2021-08-30 18:09:17,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:17,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101525986] [2021-08-30 18:09:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:17,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:17,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:17,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101525986] [2021-08-30 18:09:17,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101525986] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:17,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:17,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:09:17,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095019364] [2021-08-30 18:09:17,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:09:17,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:17,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:09:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:17,139 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:17,518 INFO L93 Difference]: Finished difference Result 290 states and 319 transitions. [2021-08-30 18:09:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 18:09:17,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 18:09:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:17,519 INFO L225 Difference]: With dead ends: 290 [2021-08-30 18:09:17,519 INFO L226 Difference]: Without dead ends: 290 [2021-08-30 18:09:17,520 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.92ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:17,520 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 106 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.57ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:17,520 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 13 Invalid, 904 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [2 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 350.57ms Time] [2021-08-30 18:09:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-08-30 18:09:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 197. [2021-08-30 18:09:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 135 states have (on average 1.6074074074074074) internal successors, (217), 193 states have internal predecessors, (217), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2021-08-30 18:09:17,524 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 21 [2021-08-30 18:09:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:17,524 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2021-08-30 18:09:17,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2021-08-30 18:09:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 18:09:17,525 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:17,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:17,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 18:09:17,526 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:17,526 INFO L82 PathProgramCache]: Analyzing trace with hash -515815524, now seen corresponding path program 1 times [2021-08-30 18:09:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:17,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208536629] [2021-08-30 18:09:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:17,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:17,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:17,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208536629] [2021-08-30 18:09:17,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208536629] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:17,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:17,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:17,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053701931] [2021-08-30 18:09:17,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:09:17,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:09:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:09:17,564 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:17,768 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2021-08-30 18:09:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:09:17,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 18:09:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:17,769 INFO L225 Difference]: With dead ends: 193 [2021-08-30 18:09:17,769 INFO L226 Difference]: Without dead ends: 193 [2021-08-30 18:09:17,769 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.97ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:17,770 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 257 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.40ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:17,770 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 10 Invalid, 436 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [24 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 189.40ms Time] [2021-08-30 18:09:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-08-30 18:09:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2021-08-30 18:09:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 184 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 211 transitions. [2021-08-30 18:09:17,773 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 211 transitions. Word has length 23 [2021-08-30 18:09:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:17,773 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 211 transitions. [2021-08-30 18:09:17,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 211 transitions. [2021-08-30 18:09:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 18:09:17,774 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:17,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:17,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 18:09:17,774 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash -515815523, now seen corresponding path program 1 times [2021-08-30 18:09:17,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:17,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810535929] [2021-08-30 18:09:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:17,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:17,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:17,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810535929] [2021-08-30 18:09:17,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810535929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:17,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:17,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:09:17,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089510601] [2021-08-30 18:09:17,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:09:17,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:09:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:09:17,847 INFO L87 Difference]: Start difference. First operand 188 states and 211 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:18,190 INFO L93 Difference]: Finished difference Result 249 states and 266 transitions. [2021-08-30 18:09:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:09:18,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 18:09:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:18,191 INFO L225 Difference]: With dead ends: 249 [2021-08-30 18:09:18,191 INFO L226 Difference]: Without dead ends: 249 [2021-08-30 18:09:18,191 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.49ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:18,192 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 258 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 320.30ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:18,192 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 16 Invalid, 770 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [16 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 320.30ms Time] [2021-08-30 18:09:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-08-30 18:09:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 212. [2021-08-30 18:09:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 161 states have (on average 1.5341614906832297) internal successors, (247), 208 states have internal predecessors, (247), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 250 transitions. [2021-08-30 18:09:18,196 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 250 transitions. Word has length 23 [2021-08-30 18:09:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:18,197 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 250 transitions. [2021-08-30 18:09:18,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 250 transitions. [2021-08-30 18:09:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 18:09:18,197 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:18,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:18,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 18:09:18,198 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr45ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:18,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1777429398, now seen corresponding path program 1 times [2021-08-30 18:09:18,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:18,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702864994] [2021-08-30 18:09:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:18,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:18,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:18,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702864994] [2021-08-30 18:09:18,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702864994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:18,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:18,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:09:18,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779832738] [2021-08-30 18:09:18,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:09:18,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:09:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:09:18,235 INFO L87 Difference]: Start difference. First operand 212 states and 250 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:18,524 INFO L93 Difference]: Finished difference Result 244 states and 260 transitions. [2021-08-30 18:09:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:09:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-30 18:09:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:18,525 INFO L225 Difference]: With dead ends: 244 [2021-08-30 18:09:18,525 INFO L226 Difference]: Without dead ends: 244 [2021-08-30 18:09:18,525 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.08ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:18,525 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 235 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.16ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:18,526 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 10 Invalid, 547 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [4 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 270.16ms Time] [2021-08-30 18:09:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-08-30 18:09:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 210. [2021-08-30 18:09:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 160 states have (on average 1.525) internal successors, (244), 206 states have internal predecessors, (244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 247 transitions. [2021-08-30 18:09:18,531 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 247 transitions. Word has length 25 [2021-08-30 18:09:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:18,536 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 247 transitions. [2021-08-30 18:09:18,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 247 transitions. [2021-08-30 18:09:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 18:09:18,540 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:18,540 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:18,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 18:09:18,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:18,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1241440350, now seen corresponding path program 1 times [2021-08-30 18:09:18,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:18,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26258886] [2021-08-30 18:09:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:18,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:18,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:18,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26258886] [2021-08-30 18:09:18,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26258886] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:18,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:18,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:09:18,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877616356] [2021-08-30 18:09:18,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:09:18,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:09:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:09:18,603 INFO L87 Difference]: Start difference. First operand 210 states and 247 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:18,935 INFO L93 Difference]: Finished difference Result 210 states and 247 transitions. [2021-08-30 18:09:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 18:09:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-08-30 18:09:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:18,936 INFO L225 Difference]: With dead ends: 210 [2021-08-30 18:09:18,936 INFO L226 Difference]: Without dead ends: 210 [2021-08-30 18:09:18,936 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.46ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 18:09:18,936 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 104 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 244.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.57ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 299.64ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:18,937 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 16 Invalid, 920 Unknown, 0 Unchecked, 2.57ms Time], IncrementalHoareTripleChecker [6 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 299.64ms Time] [2021-08-30 18:09:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-08-30 18:09:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-08-30 18:09:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 160 states have (on average 1.51875) internal successors, (243), 205 states have internal predecessors, (243), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2021-08-30 18:09:18,940 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 27 [2021-08-30 18:09:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:18,940 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2021-08-30 18:09:18,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2021-08-30 18:09:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 18:09:18,940 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:18,940 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:18,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 18:09:18,941 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr25REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1241440351, now seen corresponding path program 1 times [2021-08-30 18:09:18,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:18,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105913937] [2021-08-30 18:09:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:18,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:18,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:18,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105913937] [2021-08-30 18:09:18,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105913937] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:18,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:18,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:09:18,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817739024] [2021-08-30 18:09:19,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:09:19,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:09:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:09:19,001 INFO L87 Difference]: Start difference. First operand 209 states and 246 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:19,395 INFO L93 Difference]: Finished difference Result 202 states and 239 transitions. [2021-08-30 18:09:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 18:09:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-08-30 18:09:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:19,396 INFO L225 Difference]: With dead ends: 202 [2021-08-30 18:09:19,396 INFO L226 Difference]: Without dead ends: 202 [2021-08-30 18:09:19,397 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 74.23ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-30 18:09:19,397 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 275.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 335.44ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:19,397 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 16 Invalid, 952 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [11 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 335.44ms Time] [2021-08-30 18:09:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-08-30 18:09:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2021-08-30 18:09:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.4709677419354839) internal successors, (228), 191 states have internal predecessors, (228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-08-30 18:09:19,400 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 27 [2021-08-30 18:09:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:19,401 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-08-30 18:09:19,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-08-30 18:09:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 18:09:19,401 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:19,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:19,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 18:09:19,401 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:19,402 INFO L82 PathProgramCache]: Analyzing trace with hash -976729154, now seen corresponding path program 1 times [2021-08-30 18:09:19,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:19,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837548060] [2021-08-30 18:09:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:19,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:19,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:19,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837548060] [2021-08-30 18:09:19,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837548060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:19,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:19,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 18:09:19,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581171135] [2021-08-30 18:09:19,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:09:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:09:19,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:09:19,462 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:19,792 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2021-08-30 18:09:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 18:09:19,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 18:09:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:19,793 INFO L225 Difference]: With dead ends: 198 [2021-08-30 18:09:19,794 INFO L226 Difference]: Without dead ends: 198 [2021-08-30 18:09:19,794 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 49.85ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-30 18:09:19,794 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 235.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.27ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:19,794 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 16 Invalid, 923 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [2 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 291.27ms Time] [2021-08-30 18:09:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-30 18:09:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2021-08-30 18:09:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 187 states have internal predecessors, (224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 227 transitions. [2021-08-30 18:09:19,797 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 227 transitions. Word has length 29 [2021-08-30 18:09:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:19,797 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 227 transitions. [2021-08-30 18:09:19,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 227 transitions. [2021-08-30 18:09:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 18:09:19,798 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:19,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:19,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-30 18:09:19,798 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr59ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:19,798 INFO L82 PathProgramCache]: Analyzing trace with hash 90529238, now seen corresponding path program 1 times [2021-08-30 18:09:19,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:19,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593325979] [2021-08-30 18:09:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:19,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:19,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:19,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593325979] [2021-08-30 18:09:19,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593325979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:19,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:19,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:19,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518089704] [2021-08-30 18:09:19,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:19,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:19,826 INFO L87 Difference]: Start difference. First operand 191 states and 227 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:20,013 INFO L93 Difference]: Finished difference Result 264 states and 315 transitions. [2021-08-30 18:09:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:20,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-08-30 18:09:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:20,014 INFO L225 Difference]: With dead ends: 264 [2021-08-30 18:09:20,014 INFO L226 Difference]: Without dead ends: 264 [2021-08-30 18:09:20,014 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.68ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:20,015 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.16ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:20,015 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 7 Invalid, 461 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [2 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 180.16ms Time] [2021-08-30 18:09:20,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-08-30 18:09:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 197. [2021-08-30 18:09:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 159 states have (on average 1.4591194968553458) internal successors, (232), 193 states have internal predecessors, (232), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 235 transitions. [2021-08-30 18:09:20,019 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 235 transitions. Word has length 31 [2021-08-30 18:09:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:20,019 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 235 transitions. [2021-08-30 18:09:20,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 235 transitions. [2021-08-30 18:09:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 18:09:20,019 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:20,019 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:20,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-30 18:09:20,020 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:20,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:20,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1488582203, now seen corresponding path program 1 times [2021-08-30 18:09:20,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:20,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582730692] [2021-08-30 18:09:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:20,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:20,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:20,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582730692] [2021-08-30 18:09:20,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582730692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:20,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:20,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:20,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183829090] [2021-08-30 18:09:20,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:20,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:20,060 INFO L87 Difference]: Start difference. First operand 197 states and 235 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:20,232 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2021-08-30 18:09:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 18:09:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:20,234 INFO L225 Difference]: With dead ends: 195 [2021-08-30 18:09:20,234 INFO L226 Difference]: Without dead ends: 195 [2021-08-30 18:09:20,234 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.13ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:20,235 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.12ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:20,235 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 435 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [1 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 166.12ms Time] [2021-08-30 18:09:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-08-30 18:09:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-08-30 18:09:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 158 states have (on average 1.4493670886075949) internal successors, (229), 191 states have internal predecessors, (229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 232 transitions. [2021-08-30 18:09:20,238 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 232 transitions. Word has length 32 [2021-08-30 18:09:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:20,238 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 232 transitions. [2021-08-30 18:09:20,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 232 transitions. [2021-08-30 18:09:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 18:09:20,238 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:20,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:20,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-30 18:09:20,238 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1098596299, now seen corresponding path program 1 times [2021-08-30 18:09:20,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:20,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821179480] [2021-08-30 18:09:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:20,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:20,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:20,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821179480] [2021-08-30 18:09:20,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821179480] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:20,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:20,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 18:09:20,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859584109] [2021-08-30 18:09:20,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 18:09:20,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 18:09:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-30 18:09:20,355 INFO L87 Difference]: Start difference. First operand 195 states and 232 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:21,045 INFO L93 Difference]: Finished difference Result 325 states and 363 transitions. [2021-08-30 18:09:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 18:09:21,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-08-30 18:09:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:21,047 INFO L225 Difference]: With dead ends: 325 [2021-08-30 18:09:21,047 INFO L226 Difference]: Without dead ends: 325 [2021-08-30 18:09:21,047 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 131.73ms TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-08-30 18:09:21,048 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 408 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 458.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 585.35ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:21,048 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 22 Invalid, 1411 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [17 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 585.35ms Time] [2021-08-30 18:09:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-08-30 18:09:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 228. [2021-08-30 18:09:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 191 states have (on average 1.3979057591623036) internal successors, (267), 224 states have internal predecessors, (267), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2021-08-30 18:09:21,052 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 33 [2021-08-30 18:09:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:21,052 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2021-08-30 18:09:21,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2021-08-30 18:09:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-30 18:09:21,053 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:21,053 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:21,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-30 18:09:21,053 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr46REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:21,054 INFO L82 PathProgramCache]: Analyzing trace with hash -49345090, now seen corresponding path program 1 times [2021-08-30 18:09:21,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:21,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894750792] [2021-08-30 18:09:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:21,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:21,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:21,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894750792] [2021-08-30 18:09:21,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894750792] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 18:09:21,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512018872] [2021-08-30 18:09:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:21,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 18:09:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:09:21,133 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) [2021-08-30 18:09:21,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 18:09:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:21,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 18:09:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:09:21,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 18:09:21,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 18:09:21,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 18:09:21,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 18:09:21,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 18:09:21,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 18:09:21,630 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-08-30 18:09:21,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 40 [2021-08-30 18:09:21,639 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-08-30 18:09:21,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 22 [2021-08-30 18:09:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:21,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:09:22,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-08-30 18:09:22,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-08-30 18:09:22,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2021-08-30 18:09:22,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-08-30 18:09:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:22,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512018872] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 18:09:22,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 18:09:22,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2021-08-30 18:09:22,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414829919] [2021-08-30 18:09:22,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 18:09:22,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 18:09:22,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=167, Unknown=1, NotChecked=0, Total=210 [2021-08-30 18:09:22,754 INFO L87 Difference]: Start difference. First operand 228 states and 270 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:23,467 INFO L93 Difference]: Finished difference Result 381 states and 422 transitions. [2021-08-30 18:09:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 18:09:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-08-30 18:09:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:23,468 INFO L225 Difference]: With dead ends: 381 [2021-08-30 18:09:23,468 INFO L226 Difference]: Without dead ends: 381 [2021-08-30 18:09:23,469 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 763.90ms TimeCoverageRelationStatistics Valid=130, Invalid=375, Unknown=1, NotChecked=0, Total=506 [2021-08-30 18:09:23,469 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 1058 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 469.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 584.86ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:23,469 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 25 Invalid, 1495 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [74 Valid, 1208 Invalid, 0 Unknown, 213 Unchecked, 584.86ms Time] [2021-08-30 18:09:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-08-30 18:09:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 266. [2021-08-30 18:09:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 229 states have (on average 1.4017467248908297) internal successors, (321), 262 states have internal predecessors, (321), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 324 transitions. [2021-08-30 18:09:23,473 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 324 transitions. Word has length 35 [2021-08-30 18:09:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:23,473 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 324 transitions. [2021-08-30 18:09:23,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 324 transitions. [2021-08-30 18:09:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 18:09:23,474 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:23,474 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:23,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 18:09:23,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 18:09:23,685 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash -824345932, now seen corresponding path program 1 times [2021-08-30 18:09:23,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:23,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203304870] [2021-08-30 18:09:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:23,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:23,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:23,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203304870] [2021-08-30 18:09:23,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203304870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:23,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:23,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:09:23,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028782049] [2021-08-30 18:09:23,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:09:23,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:09:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:23,738 INFO L87 Difference]: Start difference. First operand 266 states and 324 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:24,031 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2021-08-30 18:09:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:09:24,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-08-30 18:09:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:24,033 INFO L225 Difference]: With dead ends: 265 [2021-08-30 18:09:24,033 INFO L226 Difference]: Without dead ends: 265 [2021-08-30 18:09:24,033 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.35ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:24,033 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275.75ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:24,033 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 748 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [2 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 275.75ms Time] [2021-08-30 18:09:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-08-30 18:09:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-08-30 18:09:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 229 states have (on average 1.3973799126637554) internal successors, (320), 261 states have internal predecessors, (320), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 323 transitions. [2021-08-30 18:09:24,037 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 323 transitions. Word has length 37 [2021-08-30 18:09:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:24,037 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 323 transitions. [2021-08-30 18:09:24,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 323 transitions. [2021-08-30 18:09:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 18:09:24,038 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:24,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:24,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-30 18:09:24,038 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -824345931, now seen corresponding path program 1 times [2021-08-30 18:09:24,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:24,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747117180] [2021-08-30 18:09:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:24,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:24,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:24,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747117180] [2021-08-30 18:09:24,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747117180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:24,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:24,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:09:24,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119957833] [2021-08-30 18:09:24,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:09:24,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:09:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:09:24,089 INFO L87 Difference]: Start difference. First operand 265 states and 323 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:24,391 INFO L93 Difference]: Finished difference Result 264 states and 322 transitions. [2021-08-30 18:09:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:09:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-08-30 18:09:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:24,392 INFO L225 Difference]: With dead ends: 264 [2021-08-30 18:09:24,392 INFO L226 Difference]: Without dead ends: 264 [2021-08-30 18:09:24,393 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.87ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:24,393 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 229.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 278.18ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:24,393 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 745 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [2 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 278.18ms Time] [2021-08-30 18:09:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-08-30 18:09:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-08-30 18:09:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 229 states have (on average 1.3930131004366813) internal successors, (319), 260 states have internal predecessors, (319), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 322 transitions. [2021-08-30 18:09:24,396 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 322 transitions. Word has length 37 [2021-08-30 18:09:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:24,396 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 322 transitions. [2021-08-30 18:09:24,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 322 transitions. [2021-08-30 18:09:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-30 18:09:24,397 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:24,397 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:24,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-30 18:09:24,397 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash 385741532, now seen corresponding path program 1 times [2021-08-30 18:09:24,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:24,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349870626] [2021-08-30 18:09:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:24,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:24,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349870626] [2021-08-30 18:09:24,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349870626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:24,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:24,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-30 18:09:24,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315759681] [2021-08-30 18:09:24,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 18:09:24,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 18:09:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-08-30 18:09:24,492 INFO L87 Difference]: Start difference. First operand 264 states and 322 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:25,244 INFO L93 Difference]: Finished difference Result 374 states and 421 transitions. [2021-08-30 18:09:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 18:09:25,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-08-30 18:09:25,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:25,245 INFO L225 Difference]: With dead ends: 374 [2021-08-30 18:09:25,245 INFO L226 Difference]: Without dead ends: 374 [2021-08-30 18:09:25,245 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 147.27ms TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-08-30 18:09:25,249 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 404 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 504.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.06ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 633.36ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:25,249 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 28 Invalid, 1841 Unknown, 0 Unchecked, 5.06ms Time], IncrementalHoareTripleChecker [28 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 633.36ms Time] [2021-08-30 18:09:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-08-30 18:09:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 265. [2021-08-30 18:09:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 261 states have internal predecessors, (317), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 320 transitions. [2021-08-30 18:09:25,253 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 320 transitions. Word has length 38 [2021-08-30 18:09:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:25,253 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 320 transitions. [2021-08-30 18:09:25,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 320 transitions. [2021-08-30 18:09:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-30 18:09:25,253 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:25,253 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:25,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-30 18:09:25,254 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr50REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash 385741533, now seen corresponding path program 1 times [2021-08-30 18:09:25,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:25,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028948142] [2021-08-30 18:09:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:25,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:25,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:25,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028948142] [2021-08-30 18:09:25,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028948142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:25,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:25,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 18:09:25,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081115642] [2021-08-30 18:09:25,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 18:09:25,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:25,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 18:09:25,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-08-30 18:09:25,416 INFO L87 Difference]: Start difference. First operand 265 states and 320 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:26,244 INFO L93 Difference]: Finished difference Result 430 states and 478 transitions. [2021-08-30 18:09:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 18:09:26,244 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-08-30 18:09:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:26,245 INFO L225 Difference]: With dead ends: 430 [2021-08-30 18:09:26,245 INFO L226 Difference]: Without dead ends: 430 [2021-08-30 18:09:26,246 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 207.30ms TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-08-30 18:09:26,246 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 604 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 532.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.62ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 664.99ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:26,246 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 22 Invalid, 1780 Unknown, 0 Unchecked, 5.62ms Time], IncrementalHoareTripleChecker [34 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 664.99ms Time] [2021-08-30 18:09:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-08-30 18:09:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 271. [2021-08-30 18:09:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.361344537815126) internal successors, (324), 267 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 327 transitions. [2021-08-30 18:09:26,250 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 327 transitions. Word has length 38 [2021-08-30 18:09:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:26,250 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 327 transitions. [2021-08-30 18:09:26,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 327 transitions. [2021-08-30 18:09:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-30 18:09:26,250 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:26,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:26,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-30 18:09:26,251 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2104055878, now seen corresponding path program 1 times [2021-08-30 18:09:26,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:26,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690555949] [2021-08-30 18:09:26,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:26,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:26,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:26,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690555949] [2021-08-30 18:09:26,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690555949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:26,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:26,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:26,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233308194] [2021-08-30 18:09:26,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:26,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:26,283 INFO L87 Difference]: Start difference. First operand 271 states and 327 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:26,456 INFO L93 Difference]: Finished difference Result 273 states and 329 transitions. [2021-08-30 18:09:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:26,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-08-30 18:09:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:26,458 INFO L225 Difference]: With dead ends: 273 [2021-08-30 18:09:26,458 INFO L226 Difference]: Without dead ends: 273 [2021-08-30 18:09:26,458 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.74ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:26,459 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.65ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:26,459 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 444 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 167.65ms Time] [2021-08-30 18:09:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-30 18:09:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-08-30 18:09:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 240 states have (on average 1.3583333333333334) internal successors, (326), 269 states have internal predecessors, (326), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 329 transitions. [2021-08-30 18:09:26,464 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 329 transitions. Word has length 39 [2021-08-30 18:09:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:26,464 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 329 transitions. [2021-08-30 18:09:26,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 329 transitions. [2021-08-30 18:09:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 18:09:26,465 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:26,465 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:26,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-30 18:09:26,465 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr64ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1003773134, now seen corresponding path program 1 times [2021-08-30 18:09:26,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:26,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440371320] [2021-08-30 18:09:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:26,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:26,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:26,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:26,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440371320] [2021-08-30 18:09:26,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440371320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:26,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:26,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:26,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805292367] [2021-08-30 18:09:26,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:09:26,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:09:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:26,541 INFO L87 Difference]: Start difference. First operand 273 states and 329 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:26,934 INFO L93 Difference]: Finished difference Result 288 states and 344 transitions. [2021-08-30 18:09:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 18:09:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-08-30 18:09:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:26,935 INFO L225 Difference]: With dead ends: 288 [2021-08-30 18:09:26,935 INFO L226 Difference]: Without dead ends: 288 [2021-08-30 18:09:26,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 69.68ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-30 18:09:26,935 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 352.90ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:26,939 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 19 Invalid, 1021 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [9 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 352.90ms Time] [2021-08-30 18:09:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-08-30 18:09:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2021-08-30 18:09:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 249 states have (on average 1.3453815261044177) internal successors, (335), 278 states have internal predecessors, (335), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 338 transitions. [2021-08-30 18:09:26,943 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 338 transitions. Word has length 40 [2021-08-30 18:09:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:26,943 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 338 transitions. [2021-08-30 18:09:26,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 338 transitions. [2021-08-30 18:09:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 18:09:26,943 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:26,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:26,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-30 18:09:26,944 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr38REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:26,944 INFO L82 PathProgramCache]: Analyzing trace with hash 533473399, now seen corresponding path program 1 times [2021-08-30 18:09:26,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:26,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481033693] [2021-08-30 18:09:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:26,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:27,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:27,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481033693] [2021-08-30 18:09:27,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481033693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:27,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:27,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:27,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13159910] [2021-08-30 18:09:27,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 18:09:27,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 18:09:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 18:09:27,020 INFO L87 Difference]: Start difference. First operand 282 states and 338 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:27,408 INFO L93 Difference]: Finished difference Result 282 states and 338 transitions. [2021-08-30 18:09:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 18:09:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-08-30 18:09:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:27,410 INFO L225 Difference]: With dead ends: 282 [2021-08-30 18:09:27,410 INFO L226 Difference]: Without dead ends: 282 [2021-08-30 18:09:27,411 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 77.36ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-30 18:09:27,411 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.69ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:27,411 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 19 Invalid, 976 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [12 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 333.69ms Time] [2021-08-30 18:09:27,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-08-30 18:09:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2021-08-30 18:09:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 277 states have internal predecessors, (334), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 337 transitions. [2021-08-30 18:09:27,414 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 337 transitions. Word has length 40 [2021-08-30 18:09:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:27,414 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 337 transitions. [2021-08-30 18:09:27,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 337 transitions. [2021-08-30 18:09:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 18:09:27,415 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:27,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:27,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-30 18:09:27,415 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr39REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:27,415 INFO L82 PathProgramCache]: Analyzing trace with hash 533473400, now seen corresponding path program 1 times [2021-08-30 18:09:27,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:27,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068661821] [2021-08-30 18:09:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:27,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:27,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:27,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068661821] [2021-08-30 18:09:27,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068661821] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:27,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:27,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:27,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747462000] [2021-08-30 18:09:27,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 18:09:27,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 18:09:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 18:09:27,500 INFO L87 Difference]: Start difference. First operand 281 states and 337 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:27,913 INFO L93 Difference]: Finished difference Result 281 states and 337 transitions. [2021-08-30 18:09:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 18:09:27,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-08-30 18:09:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:27,915 INFO L225 Difference]: With dead ends: 281 [2021-08-30 18:09:27,915 INFO L226 Difference]: Without dead ends: 281 [2021-08-30 18:09:27,915 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 95.14ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-30 18:09:27,915 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 78 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.17ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:27,915 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 19 Invalid, 972 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [12 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 350.17ms Time] [2021-08-30 18:09:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-08-30 18:09:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2021-08-30 18:09:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 249 states have (on average 1.3373493975903614) internal successors, (333), 276 states have internal predecessors, (333), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 336 transitions. [2021-08-30 18:09:27,919 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 336 transitions. Word has length 40 [2021-08-30 18:09:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:27,919 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 336 transitions. [2021-08-30 18:09:27,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 336 transitions. [2021-08-30 18:09:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 18:09:27,920 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:27,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:27,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-30 18:09:27,920 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr51ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1330432764, now seen corresponding path program 1 times [2021-08-30 18:09:27,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:27,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157165068] [2021-08-30 18:09:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:27,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:28,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:28,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157165068] [2021-08-30 18:09:28,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157165068] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:28,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:28,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-30 18:09:28,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283161157] [2021-08-30 18:09:28,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 18:09:28,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 18:09:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-08-30 18:09:28,136 INFO L87 Difference]: Start difference. First operand 280 states and 336 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:29,240 INFO L93 Difference]: Finished difference Result 448 states and 489 transitions. [2021-08-30 18:09:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-30 18:09:29,241 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-08-30 18:09:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:29,242 INFO L225 Difference]: With dead ends: 448 [2021-08-30 18:09:29,242 INFO L226 Difference]: Without dead ends: 448 [2021-08-30 18:09:29,242 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 332.86ms TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2021-08-30 18:09:29,243 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 846 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 699.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.68ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 840.62ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:29,243 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 25 Invalid, 2155 Unknown, 0 Unchecked, 6.68ms Time], IncrementalHoareTripleChecker [41 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 840.62ms Time] [2021-08-30 18:09:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-08-30 18:09:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 280. [2021-08-30 18:09:29,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 249 states have (on average 1.3333333333333333) internal successors, (332), 276 states have internal predecessors, (332), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 335 transitions. [2021-08-30 18:09:29,247 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 335 transitions. Word has length 40 [2021-08-30 18:09:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:29,247 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 335 transitions. [2021-08-30 18:09:29,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 335 transitions. [2021-08-30 18:09:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 18:09:29,248 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:29,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:29,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-30 18:09:29,248 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash -930257781, now seen corresponding path program 1 times [2021-08-30 18:09:29,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:29,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123558601] [2021-08-30 18:09:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:29,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:29,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:29,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123558601] [2021-08-30 18:09:29,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123558601] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:29,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:29,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 18:09:29,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444068156] [2021-08-30 18:09:29,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:09:29,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:09:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:29,307 INFO L87 Difference]: Start difference. First operand 280 states and 335 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:29,703 INFO L93 Difference]: Finished difference Result 290 states and 346 transitions. [2021-08-30 18:09:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 18:09:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-08-30 18:09:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:29,705 INFO L225 Difference]: With dead ends: 290 [2021-08-30 18:09:29,705 INFO L226 Difference]: Without dead ends: 290 [2021-08-30 18:09:29,705 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 83.12ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-08-30 18:09:29,706 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.06ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:29,706 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19 Invalid, 1043 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [6 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 332.06ms Time] [2021-08-30 18:09:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-08-30 18:09:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 276. [2021-08-30 18:09:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 246 states have (on average 1.329268292682927) internal successors, (327), 272 states have internal predecessors, (327), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 330 transitions. [2021-08-30 18:09:29,709 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 330 transitions. Word has length 41 [2021-08-30 18:09:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:29,709 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 330 transitions. [2021-08-30 18:09:29,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 330 transitions. [2021-08-30 18:09:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-30 18:09:29,710 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:29,710 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:29,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-30 18:09:29,710 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr77ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1804534839, now seen corresponding path program 1 times [2021-08-30 18:09:29,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:29,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904376024] [2021-08-30 18:09:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:29,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:29,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:29,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904376024] [2021-08-30 18:09:29,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904376024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:29,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:29,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:09:29,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691204640] [2021-08-30 18:09:29,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:29,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:29,739 INFO L87 Difference]: Start difference. First operand 276 states and 330 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:29,891 INFO L93 Difference]: Finished difference Result 289 states and 334 transitions. [2021-08-30 18:09:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:29,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-08-30 18:09:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:29,892 INFO L225 Difference]: With dead ends: 289 [2021-08-30 18:09:29,892 INFO L226 Difference]: Without dead ends: 289 [2021-08-30 18:09:29,892 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.39ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:29,893 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.37ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:29,893 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 7 Invalid, 332 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 147.37ms Time] [2021-08-30 18:09:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-08-30 18:09:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2021-08-30 18:09:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 247 states have (on average 1.3279352226720649) internal successors, (328), 273 states have internal predecessors, (328), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 331 transitions. [2021-08-30 18:09:29,896 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 331 transitions. Word has length 42 [2021-08-30 18:09:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:29,896 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 331 transitions. [2021-08-30 18:09:29,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 331 transitions. [2021-08-30 18:09:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-30 18:09:29,897 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:29,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:29,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-30 18:09:29,897 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr54ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash 968459560, now seen corresponding path program 1 times [2021-08-30 18:09:29,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:29,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938112638] [2021-08-30 18:09:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:29,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:30,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:30,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938112638] [2021-08-30 18:09:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938112638] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:30,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:30,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-30 18:09:30,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058077593] [2021-08-30 18:09:30,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 18:09:30,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 18:09:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-08-30 18:09:30,100 INFO L87 Difference]: Start difference. First operand 277 states and 331 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:31,139 INFO L93 Difference]: Finished difference Result 428 states and 475 transitions. [2021-08-30 18:09:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-30 18:09:31,139 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-08-30 18:09:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:31,140 INFO L225 Difference]: With dead ends: 428 [2021-08-30 18:09:31,140 INFO L226 Difference]: Without dead ends: 428 [2021-08-30 18:09:31,141 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 315.95ms TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-08-30 18:09:31,141 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 719 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 666.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 803.32ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:31,141 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 34 Invalid, 2162 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [42 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 803.32ms Time] [2021-08-30 18:09:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-30 18:09:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 277. [2021-08-30 18:09:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 247 states have (on average 1.3238866396761133) internal successors, (327), 273 states have internal predecessors, (327), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 330 transitions. [2021-08-30 18:09:31,145 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 330 transitions. Word has length 43 [2021-08-30 18:09:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:31,145 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 330 transitions. [2021-08-30 18:09:31,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 330 transitions. [2021-08-30 18:09:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 18:09:31,145 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:31,146 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:31,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-30 18:09:31,146 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr62REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1207787386, now seen corresponding path program 1 times [2021-08-30 18:09:31,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:31,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028492291] [2021-08-30 18:09:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:31,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:09:31,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:31,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028492291] [2021-08-30 18:09:31,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028492291] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 18:09:31,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713038488] [2021-08-30 18:09:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:31,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 18:09:31,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:09:31,253 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) [2021-08-30 18:09:31,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 18:09:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:31,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 18:09:31,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:09:31,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 18:09:31,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 18:09:31,402 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-30 18:09:31,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 18:09:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 18:09:31,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 18:09:31,679 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-30 18:09:31,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-08-30 18:09:31,682 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-30 18:09:31,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-08-30 18:09:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:31,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:09:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:31,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713038488] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 18:09:31,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 18:09:31,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 11 [2021-08-30 18:09:31,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349083889] [2021-08-30 18:09:31,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 18:09:31,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 18:09:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-08-30 18:09:31,848 INFO L87 Difference]: Start difference. First operand 277 states and 330 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 10 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:32,580 INFO L93 Difference]: Finished difference Result 409 states and 450 transitions. [2021-08-30 18:09:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 18:09:32,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 10 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-08-30 18:09:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:32,582 INFO L225 Difference]: With dead ends: 409 [2021-08-30 18:09:32,582 INFO L226 Difference]: Without dead ends: 409 [2021-08-30 18:09:32,582 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 202.92ms TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-08-30 18:09:32,582 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 227 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 469.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 567.81ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:32,583 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 25 Invalid, 1664 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [32 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 567.81ms Time] [2021-08-30 18:09:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-08-30 18:09:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 301. [2021-08-30 18:09:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 271 states have (on average 1.3357933579335792) internal successors, (362), 297 states have internal predecessors, (362), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 365 transitions. [2021-08-30 18:09:32,586 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 365 transitions. Word has length 45 [2021-08-30 18:09:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:32,586 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 365 transitions. [2021-08-30 18:09:32,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 10 states have internal predecessors, (99), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 365 transitions. [2021-08-30 18:09:32,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 18:09:32,587 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:32,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:32,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 18:09:32,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-30 18:09:32,801 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr64ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:32,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1891470081, now seen corresponding path program 1 times [2021-08-30 18:09:32,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:32,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655082376] [2021-08-30 18:09:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:32,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:32,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:32,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655082376] [2021-08-30 18:09:32,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655082376] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:32,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:32,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:09:32,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283600916] [2021-08-30 18:09:32,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:09:32,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:09:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:32,831 INFO L87 Difference]: Start difference. First operand 301 states and 365 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:32,986 INFO L93 Difference]: Finished difference Result 303 states and 365 transitions. [2021-08-30 18:09:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:09:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-08-30 18:09:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:32,987 INFO L225 Difference]: With dead ends: 303 [2021-08-30 18:09:32,987 INFO L226 Difference]: Without dead ends: 303 [2021-08-30 18:09:32,987 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.27ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:09:32,987 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 88 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.70ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:32,987 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 7 Invalid, 363 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 149.70ms Time] [2021-08-30 18:09:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-08-30 18:09:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2021-08-30 18:09:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 270 states have (on average 1.325925925925926) internal successors, (358), 295 states have internal predecessors, (358), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 361 transitions. [2021-08-30 18:09:32,991 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 361 transitions. Word has length 45 [2021-08-30 18:09:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:32,991 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 361 transitions. [2021-08-30 18:09:32,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 361 transitions. [2021-08-30 18:09:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-30 18:09:32,992 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:32,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:32,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-30 18:09:32,992 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr79ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:32,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1213297892, now seen corresponding path program 1 times [2021-08-30 18:09:32,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:32,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510616472] [2021-08-30 18:09:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:32,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:33,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:33,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510616472] [2021-08-30 18:09:33,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510616472] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 18:09:33,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118515659] [2021-08-30 18:09:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:33,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 18:09:33,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:09:33,045 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) [2021-08-30 18:09:33,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 18:09:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:33,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 18:09:33,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:09:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:33,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:09:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:33,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118515659] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 18:09:33,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 18:09:33,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-30 18:09:33,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603507594] [2021-08-30 18:09:33,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:09:33,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:09:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:33,412 INFO L87 Difference]: Start difference. First operand 299 states and 361 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:33,676 INFO L93 Difference]: Finished difference Result 330 states and 392 transitions. [2021-08-30 18:09:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:09:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-08-30 18:09:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:33,677 INFO L225 Difference]: With dead ends: 330 [2021-08-30 18:09:33,677 INFO L226 Difference]: Without dead ends: 306 [2021-08-30 18:09:33,677 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 27.34ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:09:33,677 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 255.12ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:33,678 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 1008 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [2 Valid, 690 Invalid, 0 Unknown, 316 Unchecked, 255.12ms Time] [2021-08-30 18:09:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-08-30 18:09:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-08-30 18:09:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 277 states have (on average 1.3176895306859207) internal successors, (365), 302 states have internal predecessors, (365), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 368 transitions. [2021-08-30 18:09:33,681 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 368 transitions. Word has length 46 [2021-08-30 18:09:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:33,681 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 368 transitions. [2021-08-30 18:09:33,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 368 transitions. [2021-08-30 18:09:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-30 18:09:33,682 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:33,682 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:33,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 18:09:33,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 18:09:33,893 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr65REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:33,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:33,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1493965183, now seen corresponding path program 1 times [2021-08-30 18:09:33,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:33,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516910317] [2021-08-30 18:09:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:33,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:33,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:33,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516910317] [2021-08-30 18:09:33,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516910317] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:33,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:33,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 18:09:33,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867059195] [2021-08-30 18:09:33,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 18:09:33,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 18:09:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-30 18:09:33,980 INFO L87 Difference]: Start difference. First operand 306 states and 368 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:34,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:34,437 INFO L93 Difference]: Finished difference Result 349 states and 402 transitions. [2021-08-30 18:09:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 18:09:34,438 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-08-30 18:09:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:34,439 INFO L225 Difference]: With dead ends: 349 [2021-08-30 18:09:34,439 INFO L226 Difference]: Without dead ends: 349 [2021-08-30 18:09:34,439 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 101.63ms TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-08-30 18:09:34,439 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 469 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.08ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:34,440 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 22 Invalid, 1088 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [30 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 389.08ms Time] [2021-08-30 18:09:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-08-30 18:09:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 313. [2021-08-30 18:09:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 284 states have (on average 1.3169014084507042) internal successors, (374), 309 states have internal predecessors, (374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 377 transitions. [2021-08-30 18:09:34,443 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 377 transitions. Word has length 46 [2021-08-30 18:09:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:34,443 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 377 transitions. [2021-08-30 18:09:34,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 377 transitions. [2021-08-30 18:09:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-30 18:09:34,444 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:34,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:34,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-30 18:09:34,444 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr66REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1493965182, now seen corresponding path program 1 times [2021-08-30 18:09:34,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:34,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796352583] [2021-08-30 18:09:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:34,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:09:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:09:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 18:09:34,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:09:34,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796352583] [2021-08-30 18:09:34,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796352583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:09:34,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:09:34,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-30 18:09:34,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146802336] [2021-08-30 18:09:34,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 18:09:34,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:09:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 18:09:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-08-30 18:09:34,590 INFO L87 Difference]: Start difference. First operand 313 states and 377 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:09:35,109 INFO L93 Difference]: Finished difference Result 349 states and 402 transitions. [2021-08-30 18:09:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 18:09:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-08-30 18:09:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:09:35,111 INFO L225 Difference]: With dead ends: 349 [2021-08-30 18:09:35,111 INFO L226 Difference]: Without dead ends: 349 [2021-08-30 18:09:35,111 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 160.41ms TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-08-30 18:09:35,111 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 352 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 341.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 420.30ms IncrementalHoareTripleChecker+Time [2021-08-30 18:09:35,112 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 19 Invalid, 1185 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [24 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 420.30ms Time] [2021-08-30 18:09:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-08-30 18:09:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 319. [2021-08-30 18:09:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 290 states have (on average 1.313793103448276) internal successors, (381), 315 states have internal predecessors, (381), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 384 transitions. [2021-08-30 18:09:35,116 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 384 transitions. Word has length 46 [2021-08-30 18:09:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:09:35,116 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 384 transitions. [2021-08-30 18:09:35,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:09:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 384 transitions. [2021-08-30 18:09:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-30 18:09:35,116 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:09:35,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:09:35,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-30 18:09:35,117 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr57REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ASSERT_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-08-30 18:09:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:09:35,117 INFO L82 PathProgramCache]: Analyzing trace with hash 292246064, now seen corresponding path program 1 times [2021-08-30 18:09:35,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:09:35,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51559679] [2021-08-30 18:09:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:09:35,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:09:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:09:35,127 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 18:09:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:09:35,160 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 18:09:35,161 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 18:09:35,162 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr57REQUIRES_VIOLATION (79 of 80 remaining) [2021-08-30 18:09:35,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (78 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (77 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_LEAK (76 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (75 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (74 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (73 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (72 of 80 remaining) [2021-08-30 18:09:35,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (71 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (70 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (69 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (68 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (67 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (66 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (65 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (64 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (63 of 80 remaining) [2021-08-30 18:09:35,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (62 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (61 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (60 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_LEAK (59 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (58 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (57 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (56 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (55 of 80 remaining) [2021-08-30 18:09:35,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (54 of 80 remaining) [2021-08-30 18:09:35,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (53 of 80 remaining) [2021-08-30 18:09:35,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK (52 of 80 remaining) [2021-08-30 18:09:35,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27ASSERT_VIOLATIONMEMORY_LEAK (51 of 80 remaining) [2021-08-30 18:09:35,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (50 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (49 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (48 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION (47 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION (46 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (45 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION (44 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION (43 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (42 of 80 remaining) [2021-08-30 18:09:35,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (41 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (40 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION (39 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION (38 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION (37 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION (36 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION (35 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK (34 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45ASSERT_VIOLATIONMEMORY_LEAK (33 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION (32 of 80 remaining) [2021-08-30 18:09:35,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION (31 of 80 remaining) [2021-08-30 18:09:35,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_LEAK (30 of 80 remaining) [2021-08-30 18:09:35,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION (29 of 80 remaining) [2021-08-30 18:09:35,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION (28 of 80 remaining) [2021-08-30 18:09:35,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_LEAK (27 of 80 remaining) [2021-08-30 18:09:35,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION (26 of 80 remaining) [2021-08-30 18:09:35,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION (25 of 80 remaining) [2021-08-30 18:09:35,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ASSERT_VIOLATIONMEMORY_LEAK (24 of 80 remaining) [2021-08-30 18:09:35,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION (23 of 80 remaining) [2021-08-30 18:09:35,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION (22 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION (21 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_LEAK (20 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION (19 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61REQUIRES_VIOLATION (18 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION (17 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63REQUIRES_VIOLATION (16 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_LEAK (15 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65REQUIRES_VIOLATION (14 of 80 remaining) [2021-08-30 18:09:35,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66REQUIRES_VIOLATION (13 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67ASSERT_VIOLATIONMEMORY_LEAK (12 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68REQUIRES_VIOLATION (11 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69REQUIRES_VIOLATION (10 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr70ASSERT_VIOLATIONMEMORY_LEAK (9 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr71ASSERT_VIOLATIONMEMORY_FREE (8 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr72ASSERT_VIOLATIONMEMORY_FREE (7 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr73ASSERT_VIOLATIONMEMORY_FREE (6 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr74REQUIRES_VIOLATION (5 of 80 remaining) [2021-08-30 18:09:35,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr75REQUIRES_VIOLATION (4 of 80 remaining) [2021-08-30 18:09:35,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr76ASSERT_VIOLATIONMEMORY_FREE (3 of 80 remaining) [2021-08-30 18:09:35,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr77ASSERT_VIOLATIONMEMORY_FREE (2 of 80 remaining) [2021-08-30 18:09:35,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr78ASSERT_VIOLATIONMEMORY_FREE (1 of 80 remaining) [2021-08-30 18:09:35,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr79ENSURES_VIOLATIONMEMORY_LEAK (0 of 80 remaining) [2021-08-30 18:09:35,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-30 18:09:35,179 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 18:09:35,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:09:35 BoogieIcfgContainer [2021-08-30 18:09:35,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 18:09:35,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 18:09:35,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 18:09:35,218 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 18:09:35,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:09:12" (3/4) ... [2021-08-30 18:09:35,219 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 18:09:35,265 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 18:09:35,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 18:09:35,268 INFO L158 Benchmark]: Toolchain (without parser) took 23864.88ms. Allocated memory was 62.9MB in the beginning and 144.7MB in the end (delta: 81.8MB). Free memory was 42.9MB in the beginning and 56.7MB in the end (delta: -13.9MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. [2021-08-30 18:09:35,268 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:09:35,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.24ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 37.3MB in the end (delta: 5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 18:09:35,270 INFO L158 Benchmark]: Boogie Preprocessor took 52.17ms. Allocated memory is still 62.9MB. Free memory was 37.3MB in the beginning and 34.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 18:09:35,271 INFO L158 Benchmark]: RCFGBuilder took 470.48ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.0MB in the beginning and 45.2MB in the end (delta: -11.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-08-30 18:09:35,271 INFO L158 Benchmark]: TraceAbstraction took 22934.59ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 44.9MB in the beginning and 58.8MB in the end (delta: -13.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2021-08-30 18:09:35,272 INFO L158 Benchmark]: Witness Printer took 47.82ms. Allocated memory is still 144.7MB. Free memory was 58.8MB in the beginning and 56.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 18:09:35,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.24ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 37.3MB in the end (delta: 5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.17ms. Allocated memory is still 62.9MB. Free memory was 37.3MB in the beginning and 34.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 470.48ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.0MB in the beginning and 45.2MB in the end (delta: -11.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22934.59ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 44.9MB in the beginning and 58.8MB in the end (delta: -13.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Witness Printer took 47.82ms. Allocated memory is still 144.7MB. Free memory was 58.8MB in the beginning and 56.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1040]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1002] SLL* list = malloc(sizeof(SLL)); [L1003] list->next = ((void*)0) VAL [list={-1:0}] [L1004] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1004] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}] [L1004] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}] [L1004] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}] [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1] [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1006] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1009] COND FALSE !(__VERIFIER_nondet_int()) [L1019] end = ((void*)0) [L1020] end = list VAL [end={-1:0}, list={-1:0}] [L1023] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1025] COND TRUE ((void*)0) != end [L1027] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}] [L1028] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}] [L1028] SLL* inner = end->inner; [L1029] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}] [L1031] COND TRUE len == 0 [L1032] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}] [L1035] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}] [L1036] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}] [L1036] COND FALSE !(!(((void*)0) == inner->inner)) [L1037] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}] [L1037] COND FALSE !(!(((void*)0) == inner->next)) [L1038] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}] [L1038] inner = inner->inner [L1039] COND TRUE len == 1 VAL [end={-1:0}, inner={0:0}, len=1, list={-1:0}] [L1040] inner->inner - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 203 locations, 80 error locations. Started 1 CEGAR loops. OverallTime: 22852.95ms, OverallIterations: 38, TraceHistogramMax: 2, EmptinessCheckTime: 23.98ms, AutomataDifference: 16213.72ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.04ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7609 SdHoareTripleChecker+Valid, 13834.57ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7609 mSDsluCounter, 583 SdHoareTripleChecker+Invalid, 11192.68ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 529 IncrementalHoareTripleChecker+Unchecked, 15091 mSDsCounter, 508 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35263 IncrementalHoareTripleChecker+Invalid, 36300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 508 mSolverCounterUnsat, 112 mSDtfsCounter, 35263 mSolverCounterSat, 114.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 3515.59ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=319occurred in iteration=37, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 174.07ms AutomataMinimizationTime, 37 MinimizatonAttempts, 1401 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 66.71ms SsaConstructionTime, 326.75ms SatisfiabilityAnalysisTime, 4792.35ms InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1343 ConstructedInterpolants, 20 QuantifiedInterpolants, 12739 SizeOfPredicates, 16 NumberOfNonLiveVariables, 583 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 43 InterpolantComputations, 34 PerfectInterpolantSequences, 16/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-30 18:09:35,301 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...