./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5_true-termination_true-no-overflow.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_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/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 d38e7f8e829b6fb879eed3e9eda17afd63dbb323 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:31:55,306 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:31:55,307 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:31:55,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:31:55,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:31:55,314 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:31:55,315 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:31:55,316 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:31:55,317 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:31:55,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:31:55,318 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:31:55,318 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:31:55,318 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:31:55,319 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:31:55,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:31:55,320 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:31:55,320 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:31:55,321 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:31:55,322 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:31:55,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:31:55,324 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:31:55,325 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:31:55,326 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:31:55,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:31:55,326 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:31:55,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:31:55,327 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:31:55,328 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:31:55,328 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:31:55,329 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:31:55,329 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:31:55,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:31:55,329 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:31:55,330 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:31:55,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:31:55,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:31:55,331 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 10:31:55,338 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:31:55,338 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:31:55,339 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 10:31:55,339 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 10:31:55,339 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 10:31:55,339 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 10:31:55,339 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 10:31:55,340 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 10:31:55,340 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 10:31:55,340 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 10:31:55,340 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 10:31:55,340 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 10:31:55,340 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 10:31:55,340 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 10:31:55,341 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:31:55,341 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 10:31:55,342 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 10:31:55,342 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 10:31:55,342 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_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/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 -> d38e7f8e829b6fb879eed3e9eda17afd63dbb323 [2018-12-09 10:31:55,361 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:31:55,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:31:55,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:31:55,371 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:31:55,371 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:31:55,372 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5_true-termination_true-no-overflow.c [2018-12-09 10:31:55,406 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/data/8cec127ca/a7dcceaab77343ab814c6587e5737440/FLAGf0c03729f [2018-12-09 10:31:55,832 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:31:55,833 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5_true-termination_true-no-overflow.c [2018-12-09 10:31:55,836 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/data/8cec127ca/a7dcceaab77343ab814c6587e5737440/FLAGf0c03729f [2018-12-09 10:31:55,843 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/data/8cec127ca/a7dcceaab77343ab814c6587e5737440 [2018-12-09 10:31:55,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:31:55,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:31:55,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:31:55,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:31:55,848 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:31:55,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55, skipping insertion in model container [2018-12-09 10:31:55,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:31:55,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:31:55,942 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:31:55,944 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:31:55,952 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:31:55,959 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:31:55,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55 WrapperNode [2018-12-09 10:31:55,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:31:55,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:31:55,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:31:55,960 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:31:55,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:31:55,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:31:55,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:31:55,971 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:31:55,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... [2018-12-09 10:31:55,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:31:55,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:31:55,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:31:55,983 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:31:55,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/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 [2018-12-09 10:31:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 10:31:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 10:31:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:31:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:31:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 10:31:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 10:31:56,134 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:31:56,134 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 10:31:56,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:31:56 BoogieIcfgContainer [2018-12-09 10:31:56,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:31:56,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 10:31:56,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 10:31:56,137 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 10:31:56,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:31:55" (1/3) ... [2018-12-09 10:31:56,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f492a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:31:56, skipping insertion in model container [2018-12-09 10:31:56,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:31:55" (2/3) ... [2018-12-09 10:31:56,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f492a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:31:56, skipping insertion in model container [2018-12-09 10:31:56,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:31:56" (3/3) ... [2018-12-09 10:31:56,139 INFO L112 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig5_true-termination_true-no-overflow.c [2018-12-09 10:31:56,145 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 10:31:56,149 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 10:31:56,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 10:31:56,178 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 10:31:56,178 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 10:31:56,178 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 10:31:56,178 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:31:56,178 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:31:56,178 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 10:31:56,178 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:31:56,179 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 10:31:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-09 10:31:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 10:31:56,192 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:31:56,193 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:31:56,194 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 10:31:56,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:31:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash -778806590, now seen corresponding path program 1 times [2018-12-09 10:31:56,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:31:56,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:31:56,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,227 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:31:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:31:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:31:56,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:31:56,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 10:31:56,280 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:31:56,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 10:31:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 10:31:56,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 10:31:56,292 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-12-09 10:31:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:31:56,330 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-12-09 10:31:56,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 10:31:56,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 10:31:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:31:56,337 INFO L225 Difference]: With dead ends: 35 [2018-12-09 10:31:56,337 INFO L226 Difference]: Without dead ends: 21 [2018-12-09 10:31:56,339 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 [2018-12-09 10:31:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-09 10:31:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-12-09 10:31:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 10:31:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-12-09 10:31:56,359 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2018-12-09 10:31:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:31:56,359 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-12-09 10:31:56,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 10:31:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-12-09 10:31:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 10:31:56,360 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:31:56,360 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:31:56,360 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 10:31:56,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:31:56,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1626799533, now seen corresponding path program 1 times [2018-12-09 10:31:56,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:31:56,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:31:56,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,361 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:31:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:31:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:31:56,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:31:56,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 10:31:56,379 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:31:56,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 10:31:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 10:31:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 10:31:56,380 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2018-12-09 10:31:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:31:56,411 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-09 10:31:56,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 10:31:56,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-12-09 10:31:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:31:56,412 INFO L225 Difference]: With dead ends: 20 [2018-12-09 10:31:56,412 INFO L226 Difference]: Without dead ends: 17 [2018-12-09 10:31:56,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 10:31:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-09 10:31:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-09 10:31:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 10:31:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-09 10:31:56,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2018-12-09 10:31:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:31:56,415 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-09 10:31:56,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 10:31:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-09 10:31:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 10:31:56,415 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:31:56,416 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:31:56,416 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 10:31:56,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:31:56,416 INFO L82 PathProgramCache]: Analyzing trace with hash -13742961, now seen corresponding path program 1 times [2018-12-09 10:31:56,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:31:56,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:31:56,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,417 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:31:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:31:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:31:56,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:31:56,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 10:31:56,429 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:31:56,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 10:31:56,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 10:31:56,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 10:31:56,429 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-12-09 10:31:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:31:56,451 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-12-09 10:31:56,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 10:31:56,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 10:31:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:31:56,451 INFO L225 Difference]: With dead ends: 24 [2018-12-09 10:31:56,452 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 10:31:56,452 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 [2018-12-09 10:31:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 10:31:56,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-09 10:31:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 10:31:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-12-09 10:31:56,454 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 10 [2018-12-09 10:31:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:31:56,454 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-12-09 10:31:56,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 10:31:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-12-09 10:31:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 10:31:56,455 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:31:56,455 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:31:56,455 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 10:31:56,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:31:56,455 INFO L82 PathProgramCache]: Analyzing trace with hash -283092845, now seen corresponding path program 1 times [2018-12-09 10:31:56,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:31:56,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:31:56,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:31:56,456 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:31:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:31:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:31:56,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 10:31:56,538 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 10:31:56,539 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-12-09 10:31:56,540 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [14], [15], [17], [19], [21], [23], [25], [31], [32], [33] [2018-12-09 10:31:56,560 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 10:31:56,560 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 10:31:56,696 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 10:31:56,697 INFO L272 AbstractInterpreter]: Visited 13 different actions 29 times. Merged at 8 different actions 16 times. Never widened. Performed 88 root evaluator evaluations with a maximum evaluation depth of 8. Performed 88 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-12-09 10:31:56,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:31:56,703 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 10:31:56,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 10:31:56,704 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/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 [2018-12-09 10:31:56,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:31:56,712 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 10:31:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:31:56,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:31:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:31:56,797 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 10:31:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:31:56,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 10:31:56,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2018-12-09 10:31:56,880 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 10:31:56,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 10:31:56,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 10:31:56,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-12-09 10:31:56,882 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2018-12-09 10:31:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:31:56,925 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-12-09 10:31:56,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 10:31:56,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2018-12-09 10:31:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:31:56,926 INFO L225 Difference]: With dead ends: 22 [2018-12-09 10:31:56,926 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 10:31:56,927 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-12-09 10:31:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 10:31:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 10:31:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 10:31:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 10:31:56,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-12-09 10:31:56,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:31:56,928 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:31:56,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 10:31:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 10:31:56,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 10:31:56,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 10:31:56,965 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 10:31:56,965 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:31:56,965 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:31:56,965 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 10:31:56,965 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 10:31:56,965 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 10:31:56,965 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 19) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 19) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 19) the Hoare annotation is: true [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,966 INFO L448 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,967 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,967 INFO L448 ceAbstractionStarter]: For program point L16-2(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,967 INFO L448 ceAbstractionStarter]: For program point L16-3(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,967 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse0 (<= main_~y~0 2))) (or (and .cse0 (<= 2 main_~y~0) (<= main_~x~0 (+ main_~y~0 2147483645))) (and (exists ((v_main_~y~0_15 Int)) (let ((.cse1 (+ v_main_~y~0_15 1))) (and (<= (+ main_~x~0 v_main_~y~0_15) 2147483647) (<= 2 v_main_~y~0_15) (<= (div .cse1 2) main_~y~0) (<= 0 .cse1)))) .cse0))) [2018-12-09 10:31:56,967 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-09 10:31:56,967 INFO L448 ceAbstractionStarter]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2018-12-09 10:31:56,967 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-12-09 10:31:56,971 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,971 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,972 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,972 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,976 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,976 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,976 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,977 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:56,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:31:56 BoogieIcfgContainer [2018-12-09 10:31:56,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 10:31:56,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:31:56,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:31:56,979 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:31:56,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:31:56" (3/4) ... [2018-12-09 10:31:56,981 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 10:31:56,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 10:31:56,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 10:31:56,988 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 10:31:56,988 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 10:31:56,988 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 10:31:57,004 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((y <= 2 && 2 <= y) && x <= y + 2147483645) || ((\exists v_main_~y~0_15 : int :: ((x + v_main_~y~0_15 <= 2147483647 && 2 <= v_main_~y~0_15) && (v_main_~y~0_15 + 1) / 2 <= y) && 0 <= v_main_~y~0_15 + 1) && y <= 2) [2018-12-09 10:31:57,013 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b1c44cf5-00eb-4c12-b4d1-fcde353caf10/bin-2019/utaipan/witness.graphml [2018-12-09 10:31:57,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:31:57,013 INFO L168 Benchmark]: Toolchain (without parser) took 1168.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 962.4 MB in the beginning and 973.3 MB in the end (delta: -10.8 MB). Peak memory consumption was 112.4 MB. Max. memory is 11.5 GB. [2018-12-09 10:31:57,014 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:31:57,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.19 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 10:31:57,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:31:57,015 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:31:57,016 INFO L168 Benchmark]: RCFGBuilder took 151.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-09 10:31:57,016 INFO L168 Benchmark]: TraceAbstraction took 843.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.3 MB in the end (delta: 130.0 MB). Peak memory consumption was 130.0 MB. Max. memory is 11.5 GB. [2018-12-09 10:31:57,017 INFO L168 Benchmark]: Witness Printer took 34.22 ms. Allocated memory is still 1.2 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:31:57,019 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 113.19 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 151.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 843.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.3 MB in the end (delta: 130.0 MB). Peak memory consumption was 130.0 MB. Max. memory is 11.5 GB. * Witness Printer took 34.22 ms. Allocated memory is still 1.2 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant [2018-12-09 10:31:57,023 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,023 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,023 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,023 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,024 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,024 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,024 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] [2018-12-09 10:31:57,024 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_15,QUANTIFIED] Derived loop invariant: ((y <= 2 && 2 <= y) && x <= y + 2147483645) || ((\exists v_main_~y~0_15 : int :: ((x + v_main_~y~0_15 <= 2147483647 && 2 <= v_main_~y~0_15) && (v_main_~y~0_15 + 1) / 2 <= y) && 0 <= v_main_~y~0_15 + 1) && y <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. SAFE Result, 0.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 38 SDslu, 37 SDs, 0 SdLazy, 77 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 43 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 2 QuantifiedInterpolants, 6432 SizeOfPredicates, 1 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...