./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:08:48,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:08:48,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:08:48,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:08:48,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:08:48,747 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:08:48,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:08:48,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:08:48,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:08:48,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:08:48,754 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:08:48,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:08:48,755 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:08:48,756 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:08:48,757 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:08:48,758 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:08:48,759 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:08:48,761 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:08:48,763 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:08:48,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:08:48,766 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:08:48,768 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:08:48,770 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:08:48,771 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:08:48,771 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:08:48,772 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:08:48,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:08:48,774 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:08:48,775 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:08:48,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:08:48,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:08:48,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:08:48,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:08:48,779 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:08:48,780 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:08:48,781 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:08:48,781 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:08:48,796 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:08:48,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:08:48,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:08:48,798 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:08:48,799 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:08:48,799 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:08:48,799 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:08:48,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:08:48,799 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:08:48,800 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:08:48,800 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:08:48,800 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:08:48,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:08:48,800 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:08:48,801 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:08:48,802 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:08:48,802 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:08:48,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:08:48,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:08:48,803 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:08:48,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:08:48,803 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:08:48,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:08:48,804 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:08:48,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:08:48,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:08:48,805 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:08:48,805 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:08:48,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:08:48,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2018-11-28 23:08:48,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:08:48,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:08:48,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:08:48,860 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:08:48,860 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:08:48,861 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-11-28 23:08:48,918 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d6bfb9d/5397d9d62fa94844a2b06678b53d14ff/FLAG5269f781d [2018-11-28 23:08:49,333 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:08:49,334 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-11-28 23:08:49,340 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d6bfb9d/5397d9d62fa94844a2b06678b53d14ff/FLAG5269f781d [2018-11-28 23:08:49,706 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d6bfb9d/5397d9d62fa94844a2b06678b53d14ff [2018-11-28 23:08:49,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:08:49,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:08:49,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:08:49,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:08:49,720 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:08:49,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e62687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49, skipping insertion in model container [2018-11-28 23:08:49,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:08:49,748 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:08:49,905 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:08:49,909 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:08:49,928 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:08:49,943 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:08:49,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49 WrapperNode [2018-11-28 23:08:49,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:08:49,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:08:49,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:08:49,946 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:08:49,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:08:49,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:08:49,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:08:49,971 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:08:49,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... [2018-11-28 23:08:49,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:08:49,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:08:49,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:08:49,996 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:08:49,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:08:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:08:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:08:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:08:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:08:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:08:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:08:50,321 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:08:50,321 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 23:08:50,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:08:50 BoogieIcfgContainer [2018-11-28 23:08:50,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:08:50,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:08:50,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:08:50,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:08:50,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:08:49" (1/3) ... [2018-11-28 23:08:50,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd70fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:08:50, skipping insertion in model container [2018-11-28 23:08:50,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:08:49" (2/3) ... [2018-11-28 23:08:50,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd70fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:08:50, skipping insertion in model container [2018-11-28 23:08:50,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:08:50" (3/3) ... [2018-11-28 23:08:50,330 INFO L112 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-11-28 23:08:50,339 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:08:50,346 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 23:08:50,362 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 23:08:50,391 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:08:50,392 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:08:50,392 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:08:50,392 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:08:50,392 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:08:50,392 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:08:50,393 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:08:50,393 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:08:50,393 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:08:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-28 23:08:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 23:08:50,418 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:08:50,419 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:08:50,421 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:08:50,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:08:50,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1374165426, now seen corresponding path program 1 times [2018-11-28 23:08:50,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:08:50,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:08:50,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:50,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:08:50,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:08:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:08:50,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:08:50,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:08:50,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:08:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:08:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:08:50,617 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-11-28 23:08:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:08:50,786 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2018-11-28 23:08:50,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:08:50,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 23:08:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:08:50,799 INFO L225 Difference]: With dead ends: 38 [2018-11-28 23:08:50,799 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 23:08:50,803 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:08:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 23:08:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-28 23:08:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 23:08:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-28 23:08:50,839 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2018-11-28 23:08:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:08:50,839 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-28 23:08:50,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:08:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-28 23:08:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 23:08:50,840 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:08:50,841 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:08:50,842 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:08:50,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:08:50,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1374165371, now seen corresponding path program 1 times [2018-11-28 23:08:50,843 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:08:50,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:08:50,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:50,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:08:50,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:08:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:08:50,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:08:50,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:08:50,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:08:50,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:08:50,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:08:50,901 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-28 23:08:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:08:50,964 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-28 23:08:50,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:08:50,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 23:08:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:08:50,965 INFO L225 Difference]: With dead ends: 19 [2018-11-28 23:08:50,966 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 23:08:50,966 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 [2018-11-28 23:08:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 23:08:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-28 23:08:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:08:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-28 23:08:50,973 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2018-11-28 23:08:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:08:50,974 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-28 23:08:50,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:08:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-28 23:08:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 23:08:50,975 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:08:50,975 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:08:50,975 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:08:50,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:08:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1867753438, now seen corresponding path program 1 times [2018-11-28 23:08:50,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:08:50,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:08:50,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:50,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:08:50,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:08:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:08:51,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:08:51,055 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:08:51,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:08:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:08:51,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:08:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:08:51,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:08:51,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-28 23:08:51,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:08:51,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:08:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:08:51,164 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2018-11-28 23:08:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:08:51,388 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-28 23:08:51,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:08:51,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 23:08:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:08:51,393 INFO L225 Difference]: With dead ends: 31 [2018-11-28 23:08:51,393 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 23:08:51,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:08:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 23:08:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 23:08:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:08:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-28 23:08:51,400 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2018-11-28 23:08:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:08:51,400 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-28 23:08:51,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:08:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-28 23:08:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 23:08:51,402 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:08:51,403 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:08:51,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:08:51,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:08:51,404 INFO L82 PathProgramCache]: Analyzing trace with hash -830353999, now seen corresponding path program 1 times [2018-11-28 23:08:51,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:08:51,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:08:51,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:51,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:08:51,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:08:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 23:08:51,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:08:51,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:08:51,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:08:51,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:08:51,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:08:51,541 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 3 states. [2018-11-28 23:08:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:08:51,592 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-28 23:08:51,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:08:51,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-28 23:08:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:08:51,594 INFO L225 Difference]: With dead ends: 19 [2018-11-28 23:08:51,594 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 23:08:51,594 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 [2018-11-28 23:08:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 23:08:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-28 23:08:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 23:08:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-28 23:08:51,599 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2018-11-28 23:08:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:08:51,600 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-28 23:08:51,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:08:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-28 23:08:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 23:08:51,601 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:08:51,601 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:08:51,601 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:08:51,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:08:51,602 INFO L82 PathProgramCache]: Analyzing trace with hash -830352301, now seen corresponding path program 1 times [2018-11-28 23:08:51,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:08:51,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:08:51,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:51,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:08:51,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:08:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:08:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 23:08:51,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:08:51,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:08:51,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:08:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:08:51,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:08:51,640 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2018-11-28 23:08:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:08:51,703 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-11-28 23:08:51,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:08:51,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-28 23:08:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:08:51,705 INFO L225 Difference]: With dead ends: 18 [2018-11-28 23:08:51,705 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 23:08:51,706 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 [2018-11-28 23:08:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 23:08:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 23:08:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 23:08:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:08:51,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-28 23:08:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:08:51,708 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:08:51,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:08:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:08:51,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 23:08:51,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 23:08:51,788 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 23:08:51,789 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:08:51,789 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:08:51,789 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 23:08:51,789 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 23:08:51,789 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 23:08:51,789 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-28 23:08:51,789 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-28 23:08:51,790 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 23:08:51,791 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= main_~x1~0 10) (<= 0 (+ main_~x1~0 2147483648)) (<= main_~x2~0 1000)) [2018-11-28 23:08:51,791 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2018-11-28 23:08:51,791 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ main_~x1~0 2147483648)) [2018-11-28 23:08:51,791 INFO L448 ceAbstractionStarter]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2018-11-28 23:08:51,791 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-28 23:08:51,791 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-28 23:08:51,792 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-28 23:08:51,792 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-28 23:08:51,792 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-28 23:08:51,792 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-28 23:08:51,792 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 23:08:51,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:08:51 BoogieIcfgContainer [2018-11-28 23:08:51,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:08:51,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:08:51,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:08:51,806 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:08:51,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:08:50" (3/4) ... [2018-11-28 23:08:51,811 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 23:08:51,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 23:08:51,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 23:08:51,824 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 23:08:51,824 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 23:08:51,825 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 23:08:51,874 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:08:51,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:08:51,876 INFO L168 Benchmark]: Toolchain (without parser) took 2164.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -104.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:08:51,878 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:08:51,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.27 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:08:51,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.38 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:08:51,879 INFO L168 Benchmark]: Boogie Preprocessor took 24.80 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:08:51,880 INFO L168 Benchmark]: RCFGBuilder took 326.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:08:51,881 INFO L168 Benchmark]: TraceAbstraction took 1482.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:08:51,881 INFO L168 Benchmark]: Witness Printer took 69.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:08:51,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.27 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.38 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.80 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 326.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1482.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. * Witness Printer took 69.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && 0 <= x1 + 2147483648) && x2 <= 1000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 18 SDslu, 39 SDs, 0 SdLazy, 51 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 21 HoareAnnotationTreeSize, 6 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 1528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 15/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...