./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/insertionsort-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/insertionsort-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c911d3bfcad41488f605dca082dbd47805d189ae ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 07:00:04,541 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:00:04,542 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:00:04,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:00:04,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:00:04,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:00:04,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:00:04,552 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:00:04,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:00:04,553 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:00:04,553 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:00:04,554 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:00:04,554 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:00:04,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:00:04,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:00:04,555 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:00:04,556 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:00:04,557 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:00:04,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:00:04,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:00:04,559 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:00:04,560 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:00:04,561 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:00:04,561 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:00:04,561 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:00:04,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:00:04,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:00:04,562 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:00:04,563 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:00:04,564 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:00:04,564 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:00:04,564 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:00:04,564 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:00:04,565 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:00:04,565 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:00:04,566 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:00:04,566 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 07:00:04,576 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:00:04,576 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:00:04,577 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:00:04,577 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:00:04,577 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:00:04,577 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:00:04,577 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:00:04,578 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 07:00:04,578 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:00:04,578 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:00:04,578 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 07:00:04,578 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 07:00:04,578 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:00:04,579 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 07:00:04,579 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 07:00:04,579 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:00:04,579 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 07:00:04,580 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 07:00:04,580 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 07:00:04,580 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 07:00:04,580 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:00:04,580 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 07:00:04,580 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 07:00:04,581 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 07:00:04,581 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:00:04,581 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 07:00:04,581 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:00:04,581 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:00:04,581 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:00:04,581 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:00:04,582 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:00:04,582 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:00:04,582 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:00:04,582 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 07:00:04,582 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:00:04,582 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 07:00:04,583 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan 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 -> Taipan 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 -> c911d3bfcad41488f605dca082dbd47805d189ae [2018-12-03 07:00:04,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:00:04,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:00:04,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:00:04,617 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:00:04,617 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:00:04,618 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/insertionsort-alloca_true-valid-memsafety_true-termination.i [2018-12-03 07:00:04,656 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/data/f6f3d712c/b4be2bb2ffa84fca87c072e81272dc4b/FLAG552cb220d [2018-12-03 07:00:05,145 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:00:05,145 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/sv-benchmarks/c/array-memsafety/insertionsort-alloca_true-valid-memsafety_true-termination.i [2018-12-03 07:00:05,154 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/data/f6f3d712c/b4be2bb2ffa84fca87c072e81272dc4b/FLAG552cb220d [2018-12-03 07:00:05,165 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/data/f6f3d712c/b4be2bb2ffa84fca87c072e81272dc4b [2018-12-03 07:00:05,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:00:05,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:00:05,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:00:05,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:00:05,172 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:00:05,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178df10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05, skipping insertion in model container [2018-12-03 07:00:05,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:00:05,199 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:00:05,341 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:00:05,347 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:00:05,407 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:00:05,430 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:00:05,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05 WrapperNode [2018-12-03 07:00:05,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:00:05,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:00:05,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:00:05,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:00:05,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:00:05,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:00:05,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:00:05,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:00:05,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... [2018-12-03 07:00:05,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:00:05,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:00:05,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:00:05,470 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:00:05,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 07:00:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 07:00:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure insertionSort [2018-12-03 07:00:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure insertionSort [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 07:00:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:00:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:00:05,640 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:00:05,640 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-03 07:00:05,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:00:05 BoogieIcfgContainer [2018-12-03 07:00:05,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:00:05,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:00:05,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:00:05,642 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:00:05,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:00:05" (1/3) ... [2018-12-03 07:00:05,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d125a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:00:05, skipping insertion in model container [2018-12-03 07:00:05,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:00:05" (2/3) ... [2018-12-03 07:00:05,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d125a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:00:05, skipping insertion in model container [2018-12-03 07:00:05,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:00:05" (3/3) ... [2018-12-03 07:00:05,644 INFO L112 eAbstractionObserver]: Analyzing ICFG insertionsort-alloca_true-valid-memsafety_true-termination.i [2018-12-03 07:00:05,649 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:00:05,653 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-12-03 07:00:05,662 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-12-03 07:00:05,676 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:00:05,676 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 07:00:05,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:00:05,677 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:00:05,677 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:00:05,677 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:00:05,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:00:05,677 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:00:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-03 07:00:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 07:00:05,691 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:05,692 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:05,693 INFO L423 AbstractCegarLoop]: === Iteration 1 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:05,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1146763727, now seen corresponding path program 1 times [2018-12-03 07:00:05,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:05,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:05,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:05,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:05,725 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:05,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:05,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:00:05,811 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:05,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:00:05,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:00:05,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:00:05,823 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2018-12-03 07:00:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:05,893 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-12-03 07:00:05,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 07:00:05,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-12-03 07:00:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:05,902 INFO L225 Difference]: With dead ends: 37 [2018-12-03 07:00:05,902 INFO L226 Difference]: Without dead ends: 34 [2018-12-03 07:00:05,904 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-03 07:00:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-03 07:00:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-03 07:00:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-03 07:00:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-12-03 07:00:05,927 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 12 [2018-12-03 07:00:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:05,927 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-12-03 07:00:05,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:00:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-12-03 07:00:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 07:00:05,928 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:05,928 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:05,928 INFO L423 AbstractCegarLoop]: === Iteration 2 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:05,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:05,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1146763726, now seen corresponding path program 1 times [2018-12-03 07:00:05,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:05,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:05,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:05,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:05,929 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:05,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:05,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 07:00:05,976 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:05,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:00:05,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:00:05,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:00:05,977 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2018-12-03 07:00:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:06,000 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-12-03 07:00:06,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 07:00:06,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-12-03 07:00:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:06,000 INFO L225 Difference]: With dead ends: 43 [2018-12-03 07:00:06,000 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 07:00:06,001 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-03 07:00:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 07:00:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-12-03 07:00:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-03 07:00:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-12-03 07:00:06,004 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 12 [2018-12-03 07:00:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:06,004 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-12-03 07:00:06,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:00:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-12-03 07:00:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 07:00:06,005 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:06,005 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:06,005 INFO L423 AbstractCegarLoop]: === Iteration 3 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:06,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1089505424, now seen corresponding path program 1 times [2018-12-03 07:00:06,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:06,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,006 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:06,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 07:00:06,060 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:06,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 07:00:06,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 07:00:06,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-03 07:00:06,060 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2018-12-03 07:00:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:06,140 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2018-12-03 07:00:06,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 07:00:06,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-03 07:00:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:06,142 INFO L225 Difference]: With dead ends: 60 [2018-12-03 07:00:06,142 INFO L226 Difference]: Without dead ends: 60 [2018-12-03 07:00:06,142 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-03 07:00:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-03 07:00:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2018-12-03 07:00:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-03 07:00:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-12-03 07:00:06,145 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2018-12-03 07:00:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:06,145 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-12-03 07:00:06,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 07:00:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-12-03 07:00:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-03 07:00:06,146 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:06,146 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:06,146 INFO L423 AbstractCegarLoop]: === Iteration 4 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:06,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1068840272, now seen corresponding path program 1 times [2018-12-03 07:00:06,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:06,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,147 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:06,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:00:06,174 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:06,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 07:00:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 07:00:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:00:06,175 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 4 states. [2018-12-03 07:00:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:06,208 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-12-03 07:00:06,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 07:00:06,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-12-03 07:00:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:06,209 INFO L225 Difference]: With dead ends: 41 [2018-12-03 07:00:06,209 INFO L226 Difference]: Without dead ends: 31 [2018-12-03 07:00:06,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:00:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-03 07:00:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-03 07:00:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-03 07:00:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-12-03 07:00:06,211 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2018-12-03 07:00:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:06,211 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-12-03 07:00:06,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 07:00:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-12-03 07:00:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-03 07:00:06,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:06,212 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:06,212 INFO L423 AbstractCegarLoop]: === Iteration 5 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:06,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,212 INFO L82 PathProgramCache]: Analyzing trace with hash 848344021, now seen corresponding path program 1 times [2018-12-03 07:00:06,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:06,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,213 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:06,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 07:00:06,255 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:06,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 07:00:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 07:00:06,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:00:06,256 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 7 states. [2018-12-03 07:00:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:06,332 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-12-03 07:00:06,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 07:00:06,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-03 07:00:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:06,333 INFO L225 Difference]: With dead ends: 64 [2018-12-03 07:00:06,333 INFO L226 Difference]: Without dead ends: 64 [2018-12-03 07:00:06,334 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-03 07:00:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-12-03 07:00:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2018-12-03 07:00:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-03 07:00:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-12-03 07:00:06,336 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 16 [2018-12-03 07:00:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:06,336 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-12-03 07:00:06,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 07:00:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-03 07:00:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 07:00:06,337 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:06,337 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:06,337 INFO L423 AbstractCegarLoop]: === Iteration 6 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:06,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash 528866906, now seen corresponding path program 1 times [2018-12-03 07:00:06,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:06,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,338 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:06,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 07:00:06,362 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:06,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:00:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:00:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:00:06,363 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2018-12-03 07:00:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:06,419 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2018-12-03 07:00:06,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 07:00:06,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-03 07:00:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:06,420 INFO L225 Difference]: With dead ends: 64 [2018-12-03 07:00:06,420 INFO L226 Difference]: Without dead ends: 64 [2018-12-03 07:00:06,421 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-03 07:00:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-12-03 07:00:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2018-12-03 07:00:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-03 07:00:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-12-03 07:00:06,423 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 17 [2018-12-03 07:00:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:06,423 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-12-03 07:00:06,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:00:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-03 07:00:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 07:00:06,424 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:06,424 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:06,424 INFO L423 AbstractCegarLoop]: === Iteration 7 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:06,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1429125399, now seen corresponding path program 1 times [2018-12-03 07:00:06,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:06,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,425 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:00:06,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 07:00:06,476 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:00:06,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 07:00:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 07:00:06,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:00:06,477 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 7 states. [2018-12-03 07:00:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:06,552 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2018-12-03 07:00:06,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 07:00:06,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-03 07:00:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:06,553 INFO L225 Difference]: With dead ends: 62 [2018-12-03 07:00:06,553 INFO L226 Difference]: Without dead ends: 62 [2018-12-03 07:00:06,553 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-03 07:00:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-12-03 07:00:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 40. [2018-12-03 07:00:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-03 07:00:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-12-03 07:00:06,555 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2018-12-03 07:00:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:06,556 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-12-03 07:00:06,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 07:00:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-12-03 07:00:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-03 07:00:06,556 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:06,556 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:06,556 INFO L423 AbstractCegarLoop]: === Iteration 8 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:06,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash -936054848, now seen corresponding path program 1 times [2018-12-03 07:00:06,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:06,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:06,557 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:06,653 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:00:06,653 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-12-03 07:00:06,655 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [11], [13], [14], [18], [21], [22], [25], [31], [46], [50], [58], [63], [65], [70], [71], [72], [74] [2018-12-03 07:00:06,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 07:00:06,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 07:00:06,844 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 07:00:06,845 INFO L272 AbstractInterpreter]: Visited 21 different actions 58 times. Merged at 11 different actions 37 times. Never widened. Performed 424 root evaluator evaluations with a maximum evaluation depth of 4. Performed 424 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 23 variables. [2018-12-03 07:00:06,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:06,851 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 07:00:06,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:06,851 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 07:00:06,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:06,858 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 07:00:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:06,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:00:06,899 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-12-03 07:00:06,900 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 07:00:06,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:00:06,907 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-03 07:00:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:06,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:00:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:07,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 07:00:07,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2018-12-03 07:00:07,139 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 07:00:07,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-03 07:00:07,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-03 07:00:07,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-12-03 07:00:07,139 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 12 states. [2018-12-03 07:00:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:07,265 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-12-03 07:00:07,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 07:00:07,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-12-03 07:00:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:07,266 INFO L225 Difference]: With dead ends: 54 [2018-12-03 07:00:07,266 INFO L226 Difference]: Without dead ends: 54 [2018-12-03 07:00:07,266 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2018-12-03 07:00:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-03 07:00:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2018-12-03 07:00:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-03 07:00:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-12-03 07:00:07,269 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2018-12-03 07:00:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:07,269 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-12-03 07:00:07,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-03 07:00:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-03 07:00:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-03 07:00:07,270 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:07,270 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:07,270 INFO L423 AbstractCegarLoop]: === Iteration 9 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:07,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2000371467, now seen corresponding path program 1 times [2018-12-03 07:00:07,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:07,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:07,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:07,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:07,271 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:07,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:07,316 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:00:07,316 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-12-03 07:00:07,316 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [11], [14], [18], [21], [22], [24], [25], [33], [34], [37], [40], [42], [58], [63], [65], [70], [71], [72], [74] [2018-12-03 07:00:07,317 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 07:00:07,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 07:00:07,334 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 07:00:07,335 INFO L272 AbstractInterpreter]: Visited 23 different actions 25 times. Merged at 2 different actions 2 times. Never widened. Performed 151 root evaluator evaluations with a maximum evaluation depth of 4. Performed 151 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-12-03 07:00:07,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:07,336 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 07:00:07,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:07,336 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 07:00:07,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:07,342 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 07:00:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:07,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:00:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:07,384 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:00:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:07,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 07:00:07,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2018-12-03 07:00:07,428 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 07:00:07,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 07:00:07,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 07:00:07,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-03 07:00:07,428 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 8 states. [2018-12-03 07:00:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:07,488 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-12-03 07:00:07,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 07:00:07,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-03 07:00:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:07,489 INFO L225 Difference]: With dead ends: 55 [2018-12-03 07:00:07,489 INFO L226 Difference]: Without dead ends: 55 [2018-12-03 07:00:07,489 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-12-03 07:00:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-03 07:00:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2018-12-03 07:00:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-03 07:00:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-12-03 07:00:07,492 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 25 [2018-12-03 07:00:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:07,492 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-12-03 07:00:07,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 07:00:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-12-03 07:00:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 07:00:07,492 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:07,492 INFO L402 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] [2018-12-03 07:00:07,493 INFO L423 AbstractCegarLoop]: === Iteration 10 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:07,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1881967302, now seen corresponding path program 1 times [2018-12-03 07:00:07,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:07,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:07,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:07,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:07,494 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:07,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:07,572 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:00:07,572 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-12-03 07:00:07,572 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [11], [14], [18], [21], [22], [25], [27], [31], [33], [34], [37], [40], [42], [48], [58], [63], [65], [70], [71], [72], [74] [2018-12-03 07:00:07,573 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 07:00:07,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 07:00:07,592 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 07:00:07,592 INFO L272 AbstractInterpreter]: Visited 25 different actions 31 times. Merged at 5 different actions 5 times. Never widened. Performed 173 root evaluator evaluations with a maximum evaluation depth of 4. Performed 173 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 2 fixpoints after 2 different actions. Largest state had 24 variables. [2018-12-03 07:00:07,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:07,593 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 07:00:07,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:07,593 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 07:00:07,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:07,600 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 07:00:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:07,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:00:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:07,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:00:07,926 INFO L478 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 25 treesize of output 23 [2018-12-03 07:00:07,927 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 07:00:07,938 INFO L478 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 28 treesize of output 24 [2018-12-03 07:00:07,938 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 07:00:07,945 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-12-03 07:00:07,946 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:54, output treesize:31 [2018-12-03 07:00:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:08,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 07:00:08,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2018-12-03 07:00:08,017 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 07:00:08,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-03 07:00:08,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-03 07:00:08,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2018-12-03 07:00:08,018 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 19 states. [2018-12-03 07:00:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:08,749 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-12-03 07:00:08,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-03 07:00:08,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2018-12-03 07:00:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:08,750 INFO L225 Difference]: With dead ends: 64 [2018-12-03 07:00:08,750 INFO L226 Difference]: Without dead ends: 64 [2018-12-03 07:00:08,750 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2018-12-03 07:00:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-12-03 07:00:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2018-12-03 07:00:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-03 07:00:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-12-03 07:00:08,752 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 26 [2018-12-03 07:00:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:08,753 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-12-03 07:00:08,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-03 07:00:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-12-03 07:00:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 07:00:08,753 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:00:08,753 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:00:08,754 INFO L423 AbstractCegarLoop]: === Iteration 11 === [insertionSortErr3REQUIRES_VIOLATION, insertionSortErr8REQUIRES_VIOLATION, insertionSortErr4REQUIRES_VIOLATION, insertionSortErr9REQUIRES_VIOLATION, insertionSortErr6REQUIRES_VIOLATION, insertionSortErr0REQUIRES_VIOLATION, insertionSortErr5REQUIRES_VIOLATION, insertionSortErr2REQUIRES_VIOLATION, insertionSortErr7REQUIRES_VIOLATION, insertionSortErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:00:08,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:08,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1063156699, now seen corresponding path program 1 times [2018-12-03 07:00:08,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:00:08,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:08,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:08,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:00:08,754 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:00:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:08,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:08,825 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:00:08,825 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-12-03 07:00:08,825 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [11], [14], [18], [21], [22], [24], [25], [31], [46], [50], [58], [63], [65], [70], [71], [72], [74] [2018-12-03 07:00:08,826 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 07:00:08,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 07:00:08,871 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 07:00:08,872 INFO L272 AbstractInterpreter]: Visited 21 different actions 57 times. Merged at 11 different actions 36 times. Never widened. Performed 420 root evaluator evaluations with a maximum evaluation depth of 4. Performed 420 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 23 variables. [2018-12-03 07:00:08,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:00:08,874 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 07:00:08,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:00:08,874 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 07:00:08,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:00:08,882 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 07:00:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:00:08,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:00:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:08,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:00:08,983 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-12-03 07:00:08,984 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 07:00:08,987 INFO L478 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 11 treesize of output 9 [2018-12-03 07:00:08,987 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 07:00:08,988 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:00:08,988 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:7 [2018-12-03 07:00:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:00:09,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 07:00:09,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2018-12-03 07:00:09,077 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 07:00:09,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-03 07:00:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-03 07:00:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2018-12-03 07:00:09,077 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2018-12-03 07:00:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:00:09,378 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-12-03 07:00:09,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-03 07:00:09,378 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2018-12-03 07:00:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:00:09,379 INFO L225 Difference]: With dead ends: 66 [2018-12-03 07:00:09,379 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 07:00:09,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2018-12-03 07:00:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 07:00:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 07:00:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 07:00:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 07:00:09,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-12-03 07:00:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:00:09,380 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 07:00:09,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-03 07:00:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 07:00:09,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 07:00:09,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:00:09 BoogieIcfgContainer [2018-12-03 07:00:09,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 07:00:09,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 07:00:09,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 07:00:09,386 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 07:00:09,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:00:05" (3/4) ... [2018-12-03 07:00:09,390 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 07:00:09,395 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 07:00:09,395 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure insertionSort [2018-12-03 07:00:09,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 07:00:09,399 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-03 07:00:09,400 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-03 07:00:09,400 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-03 07:00:09,429 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0324b912-6291-465a-93a2-a64dcd911acb/bin-2019/utaipan/witness.graphml [2018-12-03 07:00:09,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 07:00:09,430 INFO L168 Benchmark]: Toolchain (without parser) took 4261.97 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 322.4 MB). Free memory was 947.0 MB in the beginning and 1.3 GB in the end (delta: -316.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2018-12-03 07:00:09,431 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:00:09,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-03 07:00:09,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-03 07:00:09,431 INFO L168 Benchmark]: Boogie Preprocessor took 19.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:00:09,431 INFO L168 Benchmark]: RCFGBuilder took 170.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-12-03 07:00:09,431 INFO L168 Benchmark]: TraceAbstraction took 3744.74 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 186.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -168.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-12-03 07:00:09,432 INFO L168 Benchmark]: Witness Printer took 43.58 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:00:09,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 170.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3744.74 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 186.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -168.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.58 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 11 error locations. SAFE Result, 3.7s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 245 SDtfs, 1041 SDslu, 738 SDs, 0 SdLazy, 915 SolverSat, 155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 134 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 381 ConstructedInterpolants, 63 QuantifiedInterpolants, 75347 SizeOfPredicates, 23 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 17/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...