./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 8d39666f7b9e3c393826226f879477647e7209cc ........................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:11:08,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:11:08,757 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:11:08,769 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:11:08,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:11:08,771 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:11:08,772 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:11:08,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:11:08,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:11:08,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:11:08,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:11:08,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:11:08,778 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:11:08,779 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:11:08,780 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:11:08,781 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:11:08,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:11:08,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:11:08,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:11:08,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:11:08,790 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:11:08,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:11:08,794 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:11:08,794 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:11:08,795 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:11:08,796 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:11:08,797 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:11:08,798 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:11:08,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:11:08,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:11:08,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:11:08,801 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:11:08,802 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:11:08,802 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:11:08,803 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:11:08,804 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:11:08,804 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-28 23:11:08,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:11:08,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:11:08,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:11:08,822 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:11:08,823 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:11:08,823 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:11:08,824 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:11:08,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:11:08,824 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:11:08,825 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:11:08,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:11:08,825 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:11:08,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:11:08,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:11:08,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:11:08,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:11:08,826 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:11:08,827 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:11:08,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:11:08,827 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:11:08,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:11:08,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:11:08,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:11:08,829 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:11:08,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:11:08,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:11:08,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:11:08,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:11:08,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:11:08,830 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:11:08,831 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:11:08,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:11:08,831 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d39666f7b9e3c393826226f879477647e7209cc [2018-11-28 23:11:08,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:11:08,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:11:08,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:11:08,893 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:11:08,894 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:11:08,894 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-11-28 23:11:08,969 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7701118/6207c9b2fb464fd4bfbccf5486698473/FLAG4ebbaea3f [2018-11-28 23:11:09,424 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:11:09,425 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-11-28 23:11:09,431 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7701118/6207c9b2fb464fd4bfbccf5486698473/FLAG4ebbaea3f [2018-11-28 23:11:09,928 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7701118/6207c9b2fb464fd4bfbccf5486698473 [2018-11-28 23:11:09,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:11:09,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:11:09,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:11:09,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:11:09,939 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:11:09,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:11:09" (1/1) ... [2018-11-28 23:11:09,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692ad555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:09, skipping insertion in model container [2018-11-28 23:11:09,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:11:09" (1/1) ... [2018-11-28 23:11:09,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:11:09,966 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:11:10,123 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:11:10,128 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:11:10,144 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:11:10,161 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:11:10,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10 WrapperNode [2018-11-28 23:11:10,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:11:10,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:11:10,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:11:10,163 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:11:10,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:11:10,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:11:10,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:11:10,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:11:10,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (1/1) ... [2018-11-28 23:11:10,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:11:10,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:11:10,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:11:10,205 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:11:10,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (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 23:11:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:11:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:11:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:11:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:11:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:11:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:11:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-28 23:11:10,326 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-28 23:11:10,558 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:11:10,558 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 23:11:10,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:11:10 BoogieIcfgContainer [2018-11-28 23:11:10,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:11:10,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:11:10,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:11:10,570 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:11:10,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:11:09" (1/3) ... [2018-11-28 23:11:10,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4444afff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:11:10, skipping insertion in model container [2018-11-28 23:11:10,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:11:10" (2/3) ... [2018-11-28 23:11:10,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4444afff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:11:10, skipping insertion in model container [2018-11-28 23:11:10,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:11:10" (3/3) ... [2018-11-28 23:11:10,575 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o5_true-unreach-call_true-termination_true-no-overflow.c [2018-11-28 23:11:10,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:11:10,591 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-28 23:11:10,605 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-28 23:11:10,637 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:11:10,637 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:11:10,637 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:11:10,638 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:11:10,638 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:11:10,638 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:11:10,638 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:11:10,638 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:11:10,638 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:11:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 23:11:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 23:11:10,664 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:11:10,665 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:11:10,673 INFO L423 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:11:10,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:11:10,680 INFO L82 PathProgramCache]: Analyzing trace with hash 755938958, now seen corresponding path program 1 times [2018-11-28 23:11:10,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:11:10,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:11:10,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:10,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:11:10,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:11:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 23:11:10,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:11:10,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:11:10,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:11:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:11:10,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:11:10,948 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-11-28 23:11:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:11:11,091 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-28 23:11:11,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:11:11,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-28 23:11:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:11:11,105 INFO L225 Difference]: With dead ends: 35 [2018-11-28 23:11:11,105 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 23:11:11,109 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:11:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 23:11:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-28 23:11:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 23:11:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-28 23:11:11,153 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 18 [2018-11-28 23:11:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:11:11,153 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-28 23:11:11,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:11:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-28 23:11:11,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 23:11:11,155 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:11:11,155 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:11:11,156 INFO L423 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:11:11,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:11:11,156 INFO L82 PathProgramCache]: Analyzing trace with hash 323921339, now seen corresponding path program 1 times [2018-11-28 23:11:11,156 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:11:11,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:11:11,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:11,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:11:11,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:11:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 23:11:11,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:11:11,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:11:11,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:11:11,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:11:11,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:11:11,310 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2018-11-28 23:11:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:11:11,404 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 23:11:11,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:11:11,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-28 23:11:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:11:11,410 INFO L225 Difference]: With dead ends: 33 [2018-11-28 23:11:11,410 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 23:11:11,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:11:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 23:11:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-28 23:11:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:11:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-28 23:11:11,418 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 24 [2018-11-28 23:11:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:11:11,419 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-28 23:11:11,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:11:11,419 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-28 23:11:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 23:11:11,421 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:11:11,421 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:11:11,421 INFO L423 AbstractCegarLoop]: === Iteration 3 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:11:11,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:11:11,422 INFO L82 PathProgramCache]: Analyzing trace with hash 324844860, now seen corresponding path program 1 times [2018-11-28 23:11:11,422 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:11:11,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:11:11,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:11,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:11:11,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:11:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 23:11:11,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:11:11,666 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 23:11:11,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:11:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:11:11,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:11:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 23:11:11,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:11:11,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-28 23:11:11,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:11:11,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:11:11,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:11:11,845 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2018-11-28 23:11:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:11:12,110 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-28 23:11:12,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:11:12,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-28 23:11:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:11:12,113 INFO L225 Difference]: With dead ends: 29 [2018-11-28 23:11:12,113 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 23:11:12,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:11:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 23:11:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-11-28 23:11:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 23:11:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-28 23:11:12,120 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-11-28 23:11:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:11:12,121 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-28 23:11:12,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:11:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-28 23:11:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 23:11:12,122 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:11:12,123 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:11:12,123 INFO L423 AbstractCegarLoop]: === Iteration 4 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:11:12,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:11:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1480256124, now seen corresponding path program 1 times [2018-11-28 23:11:12,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:11:12,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:11:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:12,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:11:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:11:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 23:11:12,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:11:12,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:11:12,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:11:12,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:11:12,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:11:12,204 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-11-28 23:11:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:11:12,259 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-28 23:11:12,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:11:12,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-28 23:11:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:11:12,261 INFO L225 Difference]: With dead ends: 27 [2018-11-28 23:11:12,261 INFO L226 Difference]: Without dead ends: 26 [2018-11-28 23:11:12,262 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 23:11:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-28 23:11:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-28 23:11:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 23:11:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-28 23:11:12,268 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 25 [2018-11-28 23:11:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:11:12,269 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-28 23:11:12,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:11:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-28 23:11:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 23:11:12,271 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:11:12,272 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:11:12,272 INFO L423 AbstractCegarLoop]: === Iteration 5 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:11:12,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:11:12,272 INFO L82 PathProgramCache]: Analyzing trace with hash 313120041, now seen corresponding path program 1 times [2018-11-28 23:11:12,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:11:12,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:11:12,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:12,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:11:12,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:11:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:11:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-28 23:11:12,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:11:12,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:11:12,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:11:12,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:11:12,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:11:12,361 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2018-11-28 23:11:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:11:12,385 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-28 23:11:12,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:11:12,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 23:11:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:11:12,387 INFO L225 Difference]: With dead ends: 26 [2018-11-28 23:11:12,387 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 23:11:12,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:11:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 23:11:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 23:11:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 23:11:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:11:12,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 23:11:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:11:12,390 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:11:12,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:11:12,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:11:12,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 23:11:12,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 23:11:12,499 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 23:11:12,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:11:12,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:11:12,500 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 23:11:12,500 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 23:11:12,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 23:11:12,500 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-28 23:11:12,501 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-28 23:11:12,501 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-28 23:11:12,501 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2018-11-28 23:11:12,501 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-28 23:11:12,501 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-11-28 23:11:12,501 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-28 23:11:12,501 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-11-28 23:11:12,502 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-28 23:11:12,502 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-11-28 23:11:12,502 INFO L448 ceAbstractionStarter]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-11-28 23:11:12,502 INFO L448 ceAbstractionStarter]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-11-28 23:11:12,502 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-28 23:11:12,502 INFO L451 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2018-11-28 23:11:12,503 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 23:11:12,503 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-11-28 23:11:12,503 INFO L448 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2018-11-28 23:11:12,503 INFO L448 ceAbstractionStarter]: For program point L6-3(line 6) no Hoare annotation was computed. [2018-11-28 23:11:12,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:11:12 BoogieIcfgContainer [2018-11-28 23:11:12,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:11:12,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:11:12,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:11:12,508 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:11:12,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:11:10" (3/4) ... [2018-11-28 23:11:12,513 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 23:11:12,521 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 23:11:12,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 23:11:12,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-28 23:11:12,527 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 23:11:12,528 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 23:11:12,528 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 23:11:12,585 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:11:12,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:11:12,587 INFO L168 Benchmark]: Toolchain (without parser) took 2655.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -85.5 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:11:12,590 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:11:12,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.90 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:11:12,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.05 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:11:12,601 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:11:12,601 INFO L168 Benchmark]: RCFGBuilder took 354.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:11:12,602 INFO L168 Benchmark]: TraceAbstraction took 1947.67 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: 72.9 MB). Peak memory consumption was 72.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:11:12,603 INFO L168 Benchmark]: Witness Printer took 78.71 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:11:12,614 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 227.90 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 21.05 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 354.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1947.67 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: 72.9 MB). Peak memory consumption was 72.9 MB. Max. memory is 11.5 GB. * Witness Printer took 78.71 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 2 error locations. SAFE Result, 1.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 85 SDtfs, 10 SDslu, 188 SDs, 0 SdLazy, 82 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 5481 SizeOfPredicates, 1 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 84/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...