./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr-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_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/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 b77e20ecf2782844251cc1f0f4840606114db633 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 11:57:59,576 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 11:57:59,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 11:57:59,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 11:57:59,585 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 11:57:59,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 11:57:59,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 11:57:59,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 11:57:59,588 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 11:57:59,589 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 11:57:59,589 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 11:57:59,589 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 11:57:59,590 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 11:57:59,591 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 11:57:59,591 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 11:57:59,592 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 11:57:59,593 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 11:57:59,594 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 11:57:59,595 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 11:57:59,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 11:57:59,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 11:57:59,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 11:57:59,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 11:57:59,600 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 11:57:59,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 11:57:59,601 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 11:57:59,601 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 11:57:59,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 11:57:59,603 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 11:57:59,603 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 11:57:59,603 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 11:57:59,604 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 11:57:59,604 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 11:57:59,604 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 11:57:59,605 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 11:57:59,605 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 11:57:59,605 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-02 11:57:59,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 11:57:59,616 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 11:57:59,617 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 11:57:59,617 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 11:57:59,617 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 11:57:59,618 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 11:57:59,618 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 11:57:59,618 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 11:57:59,618 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 11:57:59,618 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 11:57:59,619 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 11:57:59,619 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 11:57:59,620 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 11:57:59,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 11:57:59,620 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_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/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 -> b77e20ecf2782844251cc1f0f4840606114db633 [2018-12-02 11:57:59,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 11:57:59,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 11:57:59,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 11:57:59,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 11:57:59,656 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 11:57:59,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-12-02 11:57:59,699 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/data/77c3f9d51/94f0e36b250848f49dc1183b4a841325/FLAG4da9fab86 [2018-12-02 11:58:00,044 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 11:58:00,044 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/sv-benchmarks/c/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-12-02 11:58:00,052 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/data/77c3f9d51/94f0e36b250848f49dc1183b4a841325/FLAG4da9fab86 [2018-12-02 11:58:00,447 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/data/77c3f9d51/94f0e36b250848f49dc1183b4a841325 [2018-12-02 11:58:00,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 11:58:00,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 11:58:00,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 11:58:00,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 11:58:00,461 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 11:58:00,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3263b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00, skipping insertion in model container [2018-12-02 11:58:00,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 11:58:00,494 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 11:58:00,663 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 11:58:00,670 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 11:58:00,722 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 11:58:00,743 INFO L195 MainTranslator]: Completed translation [2018-12-02 11:58:00,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00 WrapperNode [2018-12-02 11:58:00,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 11:58:00,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 11:58:00,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 11:58:00,744 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 11:58:00,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 11:58:00,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 11:58:00,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 11:58:00,760 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 11:58:00,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... [2018-12-02 11:58:00,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 11:58:00,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 11:58:00,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 11:58:00,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 11:58:00,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/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 [2018-12-02 11:58:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 11:58:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 11:58:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure cstrchr [2018-12-02 11:58:00,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrchr [2018-12-02 11:58:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 11:58:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 11:58:00,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 11:58:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 11:58:00,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 11:58:00,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 11:58:00,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 11:58:00,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 11:58:00,931 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 11:58:00,931 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 11:58:00,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:58:00 BoogieIcfgContainer [2018-12-02 11:58:00,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 11:58:00,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 11:58:00,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 11:58:00,933 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 11:58:00,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:58:00" (1/3) ... [2018-12-02 11:58:00,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a7bfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:58:00, skipping insertion in model container [2018-12-02 11:58:00,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:58:00" (2/3) ... [2018-12-02 11:58:00,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a7bfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:58:00, skipping insertion in model container [2018-12-02 11:58:00,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:58:00" (3/3) ... [2018-12-02 11:58:00,935 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-12-02 11:58:00,941 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 11:58:00,945 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-02 11:58:00,953 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-02 11:58:00,968 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 11:58:00,968 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 11:58:00,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 11:58:00,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 11:58:00,968 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 11:58:00,968 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 11:58:00,968 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 11:58:00,968 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 11:58:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-02 11:58:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 11:58:00,982 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:00,982 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:00,983 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:00,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 73489347, now seen corresponding path program 1 times [2018-12-02 11:58:00,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:01,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,015 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 11:58:01,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 11:58:01,075 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 11:58:01,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 11:58:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 11:58:01,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 11:58:01,087 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-12-02 11:58:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:01,118 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-12-02 11:58:01,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 11:58:01,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 11:58:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:01,124 INFO L225 Difference]: With dead ends: 36 [2018-12-02 11:58:01,124 INFO L226 Difference]: Without dead ends: 33 [2018-12-02 11:58:01,125 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 11:58:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-02 11:58:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-02 11:58:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 11:58:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-12-02 11:58:01,145 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 9 [2018-12-02 11:58:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:01,146 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-12-02 11:58:01,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 11:58:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-12-02 11:58:01,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 11:58:01,146 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:01,146 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:01,147 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:01,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:01,147 INFO L82 PathProgramCache]: Analyzing trace with hash 73489348, now seen corresponding path program 1 times [2018-12-02 11:58:01,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:01,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,148 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 11:58:01,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 11:58:01,181 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 11:58:01,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 11:58:01,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 11:58:01,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 11:58:01,182 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-12-02 11:58:01,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:01,196 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-12-02 11:58:01,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 11:58:01,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-02 11:58:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:01,198 INFO L225 Difference]: With dead ends: 32 [2018-12-02 11:58:01,198 INFO L226 Difference]: Without dead ends: 32 [2018-12-02 11:58:01,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 11:58:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-02 11:58:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-02 11:58:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-02 11:58:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-12-02 11:58:01,202 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 9 [2018-12-02 11:58:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:01,202 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-12-02 11:58:01,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 11:58:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-12-02 11:58:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 11:58:01,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:01,203 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:01,203 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:01,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:01,203 INFO L82 PathProgramCache]: Analyzing trace with hash -117234863, now seen corresponding path program 1 times [2018-12-02 11:58:01,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:01,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,205 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 11:58:01,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 11:58:01,246 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 11:58:01,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 11:58:01,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 11:58:01,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 11:58:01,246 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2018-12-02 11:58:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:01,284 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-12-02 11:58:01,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 11:58:01,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 11:58:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:01,284 INFO L225 Difference]: With dead ends: 29 [2018-12-02 11:58:01,285 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 11:58:01,285 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 [2018-12-02 11:58:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 11:58:01,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-02 11:58:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 11:58:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-12-02 11:58:01,287 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 13 [2018-12-02 11:58:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:01,287 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-12-02 11:58:01,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 11:58:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-12-02 11:58:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 11:58:01,287 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:01,287 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:01,288 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:01,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash -117234862, now seen corresponding path program 1 times [2018-12-02 11:58:01,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:01,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,289 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 11:58:01,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 11:58:01,329 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 11:58:01,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 11:58:01,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 11:58:01,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-02 11:58:01,330 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2018-12-02 11:58:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:01,375 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-12-02 11:58:01,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 11:58:01,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-02 11:58:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:01,377 INFO L225 Difference]: With dead ends: 40 [2018-12-02 11:58:01,377 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 11:58:01,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-02 11:58:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 11:58:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-12-02 11:58:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 11:58:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2018-12-02 11:58:01,380 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2018-12-02 11:58:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:01,381 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-12-02 11:58:01,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 11:58:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2018-12-02 11:58:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 11:58:01,381 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:01,381 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:01,381 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:01,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:01,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1322983191, now seen corresponding path program 1 times [2018-12-02 11:58:01,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:01,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,382 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 11:58:01,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 11:58:01,401 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 11:58:01,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 11:58:01,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 11:58:01,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 11:58:01,402 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 3 states. [2018-12-02 11:58:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:01,407 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-12-02 11:58:01,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 11:58:01,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-12-02 11:58:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:01,408 INFO L225 Difference]: With dead ends: 38 [2018-12-02 11:58:01,408 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 11:58:01,408 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 11:58:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 11:58:01,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-02 11:58:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 11:58:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-12-02 11:58:01,411 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2018-12-02 11:58:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:01,411 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-12-02 11:58:01,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 11:58:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-02 11:58:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 11:58:01,411 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:01,411 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:01,411 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:01,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:01,412 INFO L82 PathProgramCache]: Analyzing trace with hash -82387354, now seen corresponding path program 1 times [2018-12-02 11:58:01,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:01,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:01,412 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 11:58:01,551 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 11:58:01,552 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-12-02 11:58:01,553 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [8], [11], [12], [15], [23], [38], [39], [43], [48], [50], [51], [54], [59], [60], [61], [63] [2018-12-02 11:58:01,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 11:58:01,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 11:58:01,665 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 11:58:01,666 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Performed 128 root evaluator evaluations with a maximum evaluation depth of 5. Performed 128 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 21 variables. [2018-12-02 11:58:01,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:01,672 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 11:58:01,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 11:58:01,672 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/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 [2018-12-02 11:58:01,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:01,681 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 11:58:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:01,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 11:58:01,726 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-12-02 11:58:01,728 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 11 treesize of output 10 [2018-12-02 11:58:01,729 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:01,730 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:01,739 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 11:58:01,739 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-12-02 11:58:01,795 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-12-02 11:58:01,801 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-12-02 11:58:01,802 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-02 11:58:01,805 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 11:58:01,814 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 11:58:01,814 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-12-02 11:58:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:01,885 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 11:58:02,045 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 16 treesize of output 12 [2018-12-02 11:58:02,046 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,052 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-02 11:58:02,061 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-12-02 11:58:02,061 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,062 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,070 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,070 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:35, output treesize:7 [2018-12-02 11:58:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:02,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 11:58:02,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2018-12-02 11:58:02,090 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 11:58:02,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 11:58:02,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 11:58:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2018-12-02 11:58:02,091 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 17 states. [2018-12-02 11:58:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:02,647 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-02 11:58:02,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 11:58:02,647 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 19 [2018-12-02 11:58:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:02,648 INFO L225 Difference]: With dead ends: 59 [2018-12-02 11:58:02,648 INFO L226 Difference]: Without dead ends: 59 [2018-12-02 11:58:02,649 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2018-12-02 11:58:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-02 11:58:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2018-12-02 11:58:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 11:58:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-12-02 11:58:02,652 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 19 [2018-12-02 11:58:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:02,653 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-12-02 11:58:02,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 11:58:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-12-02 11:58:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 11:58:02,653 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:02,654 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:02,654 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:02,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1785413760, now seen corresponding path program 1 times [2018-12-02 11:58:02,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:02,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:02,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:02,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:02,655 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:02,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 11:58:02,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 11:58:02,700 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 11:58:02,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 11:58:02,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 11:58:02,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 11:58:02,701 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-12-02 11:58:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:02,731 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-12-02 11:58:02,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 11:58:02,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 11:58:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:02,732 INFO L225 Difference]: With dead ends: 43 [2018-12-02 11:58:02,732 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 11:58:02,732 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 [2018-12-02 11:58:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 11:58:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 11:58:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 11:58:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-02 11:58:02,734 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 23 [2018-12-02 11:58:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:02,734 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-02 11:58:02,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 11:58:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-02 11:58:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 11:58:02,735 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 11:58:02,735 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 11:58:02,735 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-02 11:58:02,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 11:58:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash 841939578, now seen corresponding path program 2 times [2018-12-02 11:58:02,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 11:58:02,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:02,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 11:58:02,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 11:58:02,736 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 11:58:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 11:58:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 11:58:02,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 11:58:02,926 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 11:58:02,926 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 11:58:02,926 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 11:58:02,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 11:58:02,926 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/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 [2018-12-02 11:58:02,932 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 11:58:02,932 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 11:58:02,944 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-02 11:58:02,944 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 11:58:02,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 11:58:02,949 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 6 treesize of output 5 [2018-12-02 11:58:02,949 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,951 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,951 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 11:58:02,967 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-12-02 11:58:02,968 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 13 treesize of output 12 [2018-12-02 11:58:02,969 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,970 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:02,974 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 11:58:02,974 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-12-02 11:58:03,105 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-12-02 11:58:03,107 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2018-12-02 11:58:03,107 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:03,108 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:03,113 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:03,114 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:24 [2018-12-02 11:58:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 11:58:03,152 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 11:58:03,349 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-02 11:58:03,357 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-12-02 11:58:03,357 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 11:58:03,358 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:03,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 11:58:03,364 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:44 [2018-12-02 11:58:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 11:58:03,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 11:58:03,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2018-12-02 11:58:03,408 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 11:58:03,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 11:58:03,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 11:58:03,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2018-12-02 11:58:03,409 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 20 states. [2018-12-02 11:58:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 11:58:04,362 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-02 11:58:04,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-02 11:58:04,362 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2018-12-02 11:58:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 11:58:04,363 INFO L225 Difference]: With dead ends: 33 [2018-12-02 11:58:04,363 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 11:58:04,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=430, Invalid=1922, Unknown=0, NotChecked=0, Total=2352 [2018-12-02 11:58:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 11:58:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 11:58:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 11:58:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 11:58:04,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-12-02 11:58:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 11:58:04,364 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 11:58:04,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 11:58:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 11:58:04,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 11:58:04,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:58:04 BoogieIcfgContainer [2018-12-02 11:58:04,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 11:58:04,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 11:58:04,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 11:58:04,367 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 11:58:04,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:58:00" (3/4) ... [2018-12-02 11:58:04,370 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 11:58:04,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrchr [2018-12-02 11:58:04,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 11:58:04,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 11:58:04,376 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-02 11:58:04,376 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 11:58:04,376 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 11:58:04,400 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0b8c6325-9021-49fc-aac5-35cb1f1ae9bc/bin-2019/utaipan/witness.graphml [2018-12-02 11:58:04,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 11:58:04,401 INFO L168 Benchmark]: Toolchain (without parser) took 3947.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 947.0 MB in the beginning and 802.0 MB in the end (delta: 145.0 MB). Peak memory consumption was 355.2 MB. Max. memory is 11.5 GB. [2018-12-02 11:58:04,402 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 11:58:04,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-02 11:58:04,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.20 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. [2018-12-02 11:58:04,402 INFO L168 Benchmark]: Boogie Preprocessor took 14.39 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. [2018-12-02 11:58:04,402 INFO L168 Benchmark]: RCFGBuilder took 156.21 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-02 11:58:04,403 INFO L168 Benchmark]: TraceAbstraction took 3435.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 802.0 MB in the end (delta: 285.0 MB). Peak memory consumption was 365.2 MB. Max. memory is 11.5 GB. [2018-12-02 11:58:04,403 INFO L168 Benchmark]: Witness Printer took 33.01 ms. Allocated memory is still 1.2 GB. Free memory is still 802.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 11:58:04,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.20 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. * Boogie Preprocessor took 14.39 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 156.21 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3435.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 802.0 MB in the end (delta: 285.0 MB). Peak memory consumption was 365.2 MB. Max. memory is 11.5 GB. * Witness Printer took 33.01 ms. Allocated memory is still 1.2 GB. Free memory is still 802.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 542]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 9 error locations. SAFE Result, 3.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 205 SDtfs, 361 SDslu, 549 SDs, 0 SdLazy, 642 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 204 ConstructedInterpolants, 30 QuantifiedInterpolants, 38910 SizeOfPredicates, 24 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...