./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/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 e334e85dd18553afecc96b27cf49a003304cbca8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 11:48:16,180 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:48:16,181 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:48:16,190 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:48:16,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:48:16,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:48:16,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:48:16,193 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:48:16,194 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:48:16,195 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:48:16,196 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:48:16,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:48:16,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:48:16,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:48:16,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:48:16,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:48:16,200 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:48:16,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:48:16,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:48:16,204 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:48:16,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:48:16,206 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:48:16,207 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:48:16,208 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:48:16,208 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:48:16,208 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:48:16,209 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:48:16,210 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:48:16,211 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:48:16,211 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:48:16,211 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:48:16,212 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:48:16,212 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:48:16,212 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:48:16,213 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:48:16,214 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:48:16,214 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-23 11:48:16,224 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:48:16,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:48:16,225 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:48:16,225 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:48:16,225 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 11:48:16,226 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 11:48:16,226 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 11:48:16,227 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:48:16,227 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 11:48:16,227 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 11:48:16,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:48:16,227 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:48:16,228 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:48:16,228 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:48:16,228 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 11:48:16,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:48:16,228 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:48:16,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:48:16,229 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:48:16,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:48:16,230 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 11:48:16,231 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:48:16,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 11:48:16,231 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:48:16,231 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_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2018-11-23 11:48:16,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:48:16,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:48:16,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:48:16,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:48:16,268 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:48:16,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-11-23 11:48:16,312 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/data/1476de4f9/c5ce1262216c47d8b8b08448830b3b9e/FLAG0cbdfb54d [2018-11-23 11:48:16,645 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:48:16,645 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-11-23 11:48:16,650 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/data/1476de4f9/c5ce1262216c47d8b8b08448830b3b9e/FLAG0cbdfb54d [2018-11-23 11:48:17,081 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/data/1476de4f9/c5ce1262216c47d8b8b08448830b3b9e [2018-11-23 11:48:17,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:48:17,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:48:17,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:48:17,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:48:17,086 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:48:17,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa4fa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17, skipping insertion in model container [2018-11-23 11:48:17,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:48:17,105 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:48:17,208 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:48:17,210 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:48:17,219 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:48:17,226 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:48:17,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17 WrapperNode [2018-11-23 11:48:17,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:48:17,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:48:17,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:48:17,227 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:48:17,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:48:17,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:48:17,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:48:17,240 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:48:17,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... [2018-11-23 11:48:17,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:48:17,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:48:17,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:48:17,253 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:48:17,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/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 [2018-11-23 11:48:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:48:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:48:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:48:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:48:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:48:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:48:17,438 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:48:17,439 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 11:48:17,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:17 BoogieIcfgContainer [2018-11-23 11:48:17,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:48:17,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:48:17,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:48:17,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:48:17,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:48:17" (1/3) ... [2018-11-23 11:48:17,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e2dacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:48:17, skipping insertion in model container [2018-11-23 11:48:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:17" (2/3) ... [2018-11-23 11:48:17,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e2dacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:48:17, skipping insertion in model container [2018-11-23 11:48:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:17" (3/3) ... [2018-11-23 11:48:17,445 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-11-23 11:48:17,452 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:48:17,456 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 11:48:17,469 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 11:48:17,495 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:48:17,495 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:48:17,495 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:48:17,496 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:48:17,496 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:48:17,496 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:48:17,496 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:48:17,496 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:48:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-23 11:48:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 11:48:17,515 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:17,516 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:17,518 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 11:48:17,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash 350361843, now seen corresponding path program 1 times [2018-11-23 11:48:17,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:48:17,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:17,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,569 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:48:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:17,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:48:17,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 11:48:17,628 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:48:17,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 11:48:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 11:48:17,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:48:17,640 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-11-23 11:48:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:17,671 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-23 11:48:17,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 11:48:17,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 11:48:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:17,681 INFO L225 Difference]: With dead ends: 34 [2018-11-23 11:48:17,681 INFO L226 Difference]: Without dead ends: 20 [2018-11-23 11:48:17,683 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 [2018-11-23 11:48:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-23 11:48:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-23 11:48:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 11:48:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-23 11:48:17,710 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2018-11-23 11:48:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:17,710 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-23 11:48:17,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 11:48:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-23 11:48:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 11:48:17,711 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:17,711 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:17,712 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 11:48:17,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:17,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2023684702, now seen corresponding path program 1 times [2018-11-23 11:48:17,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:48:17,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:17,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,714 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:48:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:17,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:48:17,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 11:48:17,741 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:48:17,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 11:48:17,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 11:48:17,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:48:17,743 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-11-23 11:48:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:17,752 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-23 11:48:17,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 11:48:17,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 11:48:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:17,753 INFO L225 Difference]: With dead ends: 19 [2018-11-23 11:48:17,753 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 11:48:17,754 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 [2018-11-23 11:48:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 11:48:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 11:48:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 11:48:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-23 11:48:17,756 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2018-11-23 11:48:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:17,757 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-23 11:48:17,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 11:48:17,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-23 11:48:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 11:48:17,757 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:17,757 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:17,758 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 11:48:17,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1690283733, now seen corresponding path program 1 times [2018-11-23 11:48:17,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:48:17,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:17,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,760 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:48:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:17,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:48:17,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 11:48:17,790 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:48:17,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 11:48:17,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 11:48:17,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 11:48:17,791 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-11-23 11:48:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:17,821 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-11-23 11:48:17,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 11:48:17,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-23 11:48:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:17,822 INFO L225 Difference]: With dead ends: 18 [2018-11-23 11:48:17,822 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 11:48:17,822 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 [2018-11-23 11:48:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 11:48:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-23 11:48:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 11:48:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-23 11:48:17,825 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2018-11-23 11:48:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:17,825 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-23 11:48:17,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 11:48:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-23 11:48:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 11:48:17,826 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:17,826 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:17,826 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 11:48:17,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash 859188228, now seen corresponding path program 1 times [2018-11-23 11:48:17,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:48:17,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:17,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,828 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:48:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:17,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:48:17,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 11:48:17,845 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:48:17,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 11:48:17,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 11:48:17,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:48:17,846 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-11-23 11:48:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:17,853 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-11-23 11:48:17,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 11:48:17,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-23 11:48:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:17,854 INFO L225 Difference]: With dead ends: 18 [2018-11-23 11:48:17,854 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 11:48:17,854 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 [2018-11-23 11:48:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 11:48:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-23 11:48:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 11:48:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-23 11:48:17,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-11-23 11:48:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:17,857 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-23 11:48:17,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 11:48:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-23 11:48:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 11:48:17,858 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:17,858 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:17,858 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 11:48:17,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1928538036, now seen corresponding path program 1 times [2018-11-23 11:48:17,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:48:17,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:17,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:17,860 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:48:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:17,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 11:48:17,890 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 11:48:17,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-23 11:48:17,892 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [16], [19], [20], [21], [23], [25], [27], [39], [40], [41] [2018-11-23 11:48:17,911 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 11:48:17,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 11:48:18,014 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 11:48:18,016 INFO L272 AbstractInterpreter]: Visited 13 different actions 32 times. Merged at 6 different actions 16 times. Never widened. Performed 116 root evaluator evaluations with a maximum evaluation depth of 2. Performed 116 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 11:48:18,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:18,033 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 11:48:18,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 11:48:18,033 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/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 [2018-11-23 11:48:18,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:18,040 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 11:48:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:18,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:48:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:18,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:48:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:18,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 11:48:18,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-23 11:48:18,132 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 11:48:18,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 11:48:18,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 11:48:18,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 11:48:18,133 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2018-11-23 11:48:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:18,157 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-11-23 11:48:18,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 11:48:18,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-23 11:48:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:18,159 INFO L225 Difference]: With dead ends: 24 [2018-11-23 11:48:18,159 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 11:48:18,160 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 11:48:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 11:48:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-23 11:48:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 11:48:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-23 11:48:18,164 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2018-11-23 11:48:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:18,164 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-23 11:48:18,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 11:48:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-11-23 11:48:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 11:48:18,165 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:18,165 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:18,165 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 11:48:18,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:18,165 INFO L82 PathProgramCache]: Analyzing trace with hash -403246875, now seen corresponding path program 2 times [2018-11-23 11:48:18,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:48:18,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:18,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:18,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:48:18,167 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:48:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:48:18,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 11:48:18,204 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 11:48:18,204 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 11:48:18,204 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 11:48:18,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 11:48:18,204 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 11:48:18,211 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 11:48:18,211 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 11:48:18,218 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-23 11:48:18,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 11:48:18,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:48:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 11:48:18,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:48:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 11:48:18,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 11:48:18,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2018-11-23 11:48:18,297 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 11:48:18,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 11:48:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 11:48:18,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 11:48:18,298 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 7 states. [2018-11-23 11:48:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:18,378 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-23 11:48:18,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 11:48:18,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-11-23 11:48:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:18,379 INFO L225 Difference]: With dead ends: 33 [2018-11-23 11:48:18,379 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 11:48:18,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-23 11:48:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 11:48:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 11:48:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 11:48:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 11:48:18,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-23 11:48:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:18,380 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:48:18,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 11:48:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 11:48:18,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:48:18,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 11:48:18,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 11:48:18,408 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 11:48:18,408 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-23 11:48:18,408 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 0 main_~v2~0) (<= main_~m~0 2147483647) (<= main_~v1~0 2147483647)) [2018-11-23 11:48:18,408 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2018-11-23 11:48:18,409 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2018-11-23 11:48:18,409 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2018-11-23 11:48:18,409 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2018-11-23 11:48:18,409 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-23 11:48:18,409 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-23 11:48:18,409 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-23 11:48:18,409 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-23 11:48:18,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:48:18 BoogieIcfgContainer [2018-11-23 11:48:18,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 11:48:18,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:48:18,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:48:18,416 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:48:18,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:17" (3/4) ... [2018-11-23 11:48:18,419 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 11:48:18,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 11:48:18,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 11:48:18,425 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 11:48:18,425 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 11:48:18,425 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 11:48:18,426 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 11:48:18,451 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_92bf15a9-5fed-49aa-9c01-4a1de47dcd00/bin-2019/utaipan/witness.graphml [2018-11-23 11:48:18,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:48:18,452 INFO L168 Benchmark]: Toolchain (without parser) took 1368.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -54.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:18,453 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:48:18,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.99 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:18,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.38 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:48:18,454 INFO L168 Benchmark]: Boogie Preprocessor took 12.34 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:18,454 INFO L168 Benchmark]: RCFGBuilder took 186.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:18,454 INFO L168 Benchmark]: TraceAbstraction took 976.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:18,454 INFO L168 Benchmark]: Witness Printer took 35.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 11:48:18,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.99 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 12.38 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.34 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 976.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 11.5 GB. * Witness Printer took 35.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: 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 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((n <= 2147483647 && 0 <= v2) && m <= 2147483647) && v1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. SAFE Result, 0.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 45 SDslu, 70 SDs, 0 SdLazy, 59 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=5, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 17 HoareAnnotationTreeSize, 5 FomulaSimplifications, 86 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 5140 SizeOfPredicates, 3 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 20/45 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...