./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 871be16186d4378aec884efd2352a47ca4eb57bc .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:49:15,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:49:15,838 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:49:15,846 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:49:15,846 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:49:15,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:49:15,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:49:15,849 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:49:15,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:49:15,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:49:15,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:49:15,851 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:49:15,852 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:49:15,852 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:49:15,853 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:49:15,853 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:49:15,853 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:49:15,854 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:49:15,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:49:15,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:49:15,856 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:49:15,857 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:49:15,858 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:49:15,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:49:15,859 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:49:15,859 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:49:15,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:49:15,860 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:49:15,860 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:49:15,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:49:15,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:49:15,861 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:49:15,861 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:49:15,862 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:49:15,862 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:49:15,862 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:49:15,862 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-03 07:49:15,869 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:49:15,869 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:49:15,870 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:49:15,870 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:49:15,870 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:49:15,870 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:49:15,870 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:49:15,871 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 07:49:15,871 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:49:15,871 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:49:15,871 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 07:49:15,871 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 07:49:15,871 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:49:15,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:49:15,872 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 07:49:15,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 07:49:15,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:49:15,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 07:49:15,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:49:15,873 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 07:49:15,873 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-03 07:49:15,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 07:49:15,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 07:49:15,873 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:49:15,874 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:49:15,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 07:49:15,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 07:49:15,875 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_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 871be16186d4378aec884efd2352a47ca4eb57bc [2018-12-03 07:49:15,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:49:15,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:49:15,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:49:15,906 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:49:15,906 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:49:15,906 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-03 07:49:15,938 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/data/9c4644c08/c553704077624be195e9d5e92f1ed499/FLAG608c78dd6 [2018-12-03 07:49:16,223 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:49:16,223 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-03 07:49:16,226 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/data/9c4644c08/c553704077624be195e9d5e92f1ed499/FLAG608c78dd6 [2018-12-03 07:49:16,663 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/data/9c4644c08/c553704077624be195e9d5e92f1ed499 [2018-12-03 07:49:16,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:49:16,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:49:16,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:49:16,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:49:16,668 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:49:16,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2f884e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16, skipping insertion in model container [2018-12-03 07:49:16,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:49:16,682 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:49:16,759 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:49:16,761 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:49:16,769 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:49:16,776 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:49:16,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16 WrapperNode [2018-12-03 07:49:16,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:49:16,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:49:16,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:49:16,777 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:49:16,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:49:16,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:49:16,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:49:16,788 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:49:16,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... [2018-12-03 07:49:16,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:49:16,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:49:16,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:49:16,798 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:49:16,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/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 07:49:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 07:49:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 07:49:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:49:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:49:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 07:49:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 07:49:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2018-12-03 07:49:16,860 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2018-12-03 07:49:16,938 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:49:16,938 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 07:49:16,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:49:16 BoogieIcfgContainer [2018-12-03 07:49:16,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:49:16,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:49:16,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:49:16,941 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:49:16,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:49:16" (1/3) ... [2018-12-03 07:49:16,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e1aee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:49:16, skipping insertion in model container [2018-12-03 07:49:16,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:49:16" (2/3) ... [2018-12-03 07:49:16,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e1aee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:49:16, skipping insertion in model container [2018-12-03 07:49:16,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:49:16" (3/3) ... [2018-12-03 07:49:16,943 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-03 07:49:16,949 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:49:16,953 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-03 07:49:16,963 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-03 07:49:16,982 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:49:16,982 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 07:49:16,982 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:49:16,982 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:49:16,982 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:49:16,982 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:49:16,982 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:49:16,982 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:49:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-12-03 07:49:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 07:49:16,996 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:16,997 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:16,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash -946681433, now seen corresponding path program 1 times [2018-12-03 07:49:17,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,032 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,083 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 07:49:17,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 07:49:17,084 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:49:17,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:49:17,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:49:17,096 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-12-03 07:49:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,120 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-12-03 07:49:17,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:49:17,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-03 07:49:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,128 INFO L225 Difference]: With dead ends: 29 [2018-12-03 07:49:17,128 INFO L226 Difference]: Without dead ends: 23 [2018-12-03 07:49:17,130 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 [2018-12-03 07:49:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-03 07:49:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-12-03 07:49:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-03 07:49:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-12-03 07:49:17,154 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2018-12-03 07:49:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,154 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-12-03 07:49:17,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:49:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-12-03 07:49:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 07:49:17,155 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:17,155 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:17,155 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash -946681593, now seen corresponding path program 1 times [2018-12-03 07:49:17,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,157 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,194 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 07:49:17,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:49:17,194 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:49:17,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:49:17,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:49:17,196 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-12-03 07:49:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,237 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2018-12-03 07:49:17,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 07:49:17,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-12-03 07:49:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,238 INFO L225 Difference]: With dead ends: 38 [2018-12-03 07:49:17,238 INFO L226 Difference]: Without dead ends: 34 [2018-12-03 07:49:17,239 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 07:49:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-03 07:49:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-12-03 07:49:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-03 07:49:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-12-03 07:49:17,244 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 9 [2018-12-03 07:49:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,244 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-12-03 07:49:17,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:49:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-12-03 07:49:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 07:49:17,244 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:17,245 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:17,245 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash 717646699, now seen corresponding path program 1 times [2018-12-03 07:49:17,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,246 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,264 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 07:49:17,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:49:17,264 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:49:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:49:17,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:49:17,265 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2018-12-03 07:49:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,308 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-12-03 07:49:17,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 07:49:17,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-03 07:49:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,309 INFO L225 Difference]: With dead ends: 47 [2018-12-03 07:49:17,309 INFO L226 Difference]: Without dead ends: 46 [2018-12-03 07:49:17,310 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 07:49:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-03 07:49:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-12-03 07:49:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-03 07:49:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-12-03 07:49:17,315 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 10 [2018-12-03 07:49:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,315 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-12-03 07:49:17,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:49:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-12-03 07:49:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 07:49:17,316 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:17,316 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:17,316 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,317 INFO L82 PathProgramCache]: Analyzing trace with hash 717641734, now seen corresponding path program 1 times [2018-12-03 07:49:17,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,318 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,325 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 07:49:17,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 07:49:17,326 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:49:17,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:49:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:49:17,327 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 3 states. [2018-12-03 07:49:17,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,337 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2018-12-03 07:49:17,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:49:17,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-03 07:49:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,338 INFO L225 Difference]: With dead ends: 46 [2018-12-03 07:49:17,338 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 07:49:17,338 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 [2018-12-03 07:49:17,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 07:49:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-12-03 07:49:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-03 07:49:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-03 07:49:17,344 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 10 [2018-12-03 07:49:17,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,344 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-03 07:49:17,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:49:17,344 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-03 07:49:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 07:49:17,344 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:17,344 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:17,345 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1100578997, now seen corresponding path program 1 times [2018-12-03 07:49:17,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,346 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:49:17,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:49:17,373 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:49:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:49:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:49:17,373 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2018-12-03 07:49:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,411 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2018-12-03 07:49:17,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 07:49:17,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-03 07:49:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,413 INFO L225 Difference]: With dead ends: 59 [2018-12-03 07:49:17,413 INFO L226 Difference]: Without dead ends: 58 [2018-12-03 07:49:17,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:49:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-12-03 07:49:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2018-12-03 07:49:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-03 07:49:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2018-12-03 07:49:17,419 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2018-12-03 07:49:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,419 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2018-12-03 07:49:17,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:49:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2018-12-03 07:49:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-03 07:49:17,420 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:17,420 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:17,420 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1291625796, now seen corresponding path program 1 times [2018-12-03 07:49:17,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,421 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 07:49:17,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:49:17,444 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:49:17,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:49:17,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:49:17,445 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 5 states. [2018-12-03 07:49:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,494 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2018-12-03 07:49:17,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 07:49:17,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-03 07:49:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,495 INFO L225 Difference]: With dead ends: 56 [2018-12-03 07:49:17,495 INFO L226 Difference]: Without dead ends: 55 [2018-12-03 07:49:17,496 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-03 07:49:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-03 07:49:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2018-12-03 07:49:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-03 07:49:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2018-12-03 07:49:17,501 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 22 [2018-12-03 07:49:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,501 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2018-12-03 07:49:17,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:49:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2018-12-03 07:49:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 07:49:17,501 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:49:17,502 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:49:17,502 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-03 07:49:17,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:49:17,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1385689002, now seen corresponding path program 1 times [2018-12-03 07:49:17,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:49:17,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:49:17,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:49:17,503 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:49:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:49:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 07:49:17,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:49:17,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:49:17,521 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:49:17,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:49:17,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:49:17,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:49:17,522 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 5 states. [2018-12-03 07:49:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:49:17,561 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-12-03 07:49:17,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 07:49:17,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-03 07:49:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:49:17,561 INFO L225 Difference]: With dead ends: 52 [2018-12-03 07:49:17,561 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 07:49:17,562 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:49:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 07:49:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 07:49:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 07:49:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 07:49:17,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-12-03 07:49:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:49:17,562 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 07:49:17,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:49:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 07:49:17,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 07:49:17,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 07:49:17,644 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-03 07:49:17,644 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-03 07:49:17,644 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-03 07:49:17,644 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-03 07:49:17,644 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-03 07:49:17,644 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-03 07:49:17,644 INFO L444 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 17) the Hoare annotation is: true [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 17) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 17) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-12-03 07:49:17,645 INFO L448 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-12-03 07:49:17,646 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 11) no Hoare annotation was computed. [2018-12-03 07:49:17,646 INFO L448 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-12-03 07:49:17,646 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-12-03 07:49:17,646 INFO L444 ceAbstractionStarter]: At program point L11-2(line 11) the Hoare annotation is: (or (< 2147483647 |mc91_#in~n|) (< (+ |mc91_#in~n| 2147483648) 0) (and (<= mc91_~n 100) (<= 0 (+ mc91_~n 2147483648)))) [2018-12-03 07:49:17,646 INFO L448 ceAbstractionStarter]: For program point L10-2(line 10) no Hoare annotation was computed. [2018-12-03 07:49:17,646 INFO L448 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-12-03 07:49:17,646 INFO L444 ceAbstractionStarter]: At program point L11-4(line 11) the Hoare annotation is: (or (< 2147483647 |mc91_#in~n|) (< (+ |mc91_#in~n| 2147483648) 0) (and (<= 0 (+ |mc91_#t~ret0| 2147483648)) (<= mc91_~n 100) (<= 0 (+ mc91_~n 2147483648)) (<= |mc91_#t~ret0| 2147483647))) [2018-12-03 07:49:17,646 INFO L451 ceAbstractionStarter]: At program point mc91ENTRY(lines 8 12) the Hoare annotation is: true [2018-12-03 07:49:17,647 INFO L448 ceAbstractionStarter]: For program point L11-5(line 11) no Hoare annotation was computed. [2018-12-03 07:49:17,647 INFO L448 ceAbstractionStarter]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-12-03 07:49:17,647 INFO L448 ceAbstractionStarter]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2018-12-03 07:49:17,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:49:17 BoogieIcfgContainer [2018-12-03 07:49:17,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 07:49:17,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 07:49:17,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 07:49:17,650 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 07:49:17,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:49:16" (3/4) ... [2018-12-03 07:49:17,652 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 07:49:17,657 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 07:49:17,657 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 07:49:17,657 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2018-12-03 07:49:17,660 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-03 07:49:17,660 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-03 07:49:17,660 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 07:49:17,686 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ccafb6fb-00b2-4f2b-8427-de71d5a3059c/bin-2019/utaipan/witness.graphml [2018-12-03 07:49:17,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 07:49:17,686 INFO L168 Benchmark]: Toolchain (without parser) took 1021.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 953.3 MB in the beginning and 963.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 94.0 MB. Max. memory is 11.5 GB. [2018-12-03 07:49:17,687 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:49:17,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 110.52 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 07:49:17,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.18 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:49:17,688 INFO L168 Benchmark]: Boogie Preprocessor took 9.72 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:49:17,688 INFO L168 Benchmark]: RCFGBuilder took 140.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-12-03 07:49:17,689 INFO L168 Benchmark]: TraceAbstraction took 710.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.8 MB in the end (delta: 124.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 11.5 GB. [2018-12-03 07:49:17,689 INFO L168 Benchmark]: Witness Printer took 36.53 ms. Allocated memory is still 1.1 GB. Free memory was 965.8 MB in the beginning and 963.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 07:49:17,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 110.52 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.18 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.72 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 710.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.8 MB in the end (delta: 124.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 11.5 GB. * Witness Printer took 36.53 ms. Allocated memory is still 1.1 GB. Free memory was 965.8 MB in the beginning and 963.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 121 SDslu, 227 SDs, 0 SdLazy, 201 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 32 PreInvPairs, 32 NumberOfFragments, 62 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 17/17 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...