./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0ed9222f 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/PodelskiRybalchenko-TACAS2011-Fig2_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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 01:32:33,825 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 01:32:33,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 01:32:33,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 01:32:33,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 01:32:33,839 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 01:32:33,841 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 01:32:33,843 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 01:32:33,845 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 01:32:33,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 01:32:33,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 01:32:33,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 01:32:33,848 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 01:32:33,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 01:32:33,850 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 01:32:33,851 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 01:32:33,852 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 01:32:33,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 01:32:33,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 01:32:33,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 01:32:33,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 01:32:33,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 01:32:33,862 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 01:32:33,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 01:32:33,863 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 01:32:33,864 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 01:32:33,865 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 01:32:33,866 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 01:32:33,867 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 01:32:33,868 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 01:32:33,868 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 01:32:33,869 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 01:32:33,869 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 01:32:33,870 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 01:32:33,871 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 01:32:33,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 01:32:33,872 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 01:32:33,888 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 01:32:33,888 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 01:32:33,889 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 01:32:33,890 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 01:32:33,890 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 01:32:33,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 01:32:33,890 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 01:32:33,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 01:32:33,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 01:32:33,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 01:32:33,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 01:32:33,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 01:32:33,892 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 01:32:33,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 01:32:33,892 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 01:32:33,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 01:32:33,893 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 01:32:33,893 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 01:32:33,893 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 01:32:33,893 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 01:32:33,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 01:32:33,894 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 01:32:33,894 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 01:32:33,894 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 01:32:33,894 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 01:32:33,894 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 01:32:33,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 01:32:33,895 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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2019-01-14 01:32:33,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 01:32:33,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 01:32:33,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 01:32:33,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 01:32:33,975 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 01:32:33,976 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2019-01-14 01:32:34,038 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70824868/3a732c91ecfb42b7ac36496fdc814108/FLAG320c26aa5 [2019-01-14 01:32:34,431 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 01:32:34,432 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2019-01-14 01:32:34,437 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70824868/3a732c91ecfb42b7ac36496fdc814108/FLAG320c26aa5 [2019-01-14 01:32:34,824 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70824868/3a732c91ecfb42b7ac36496fdc814108 [2019-01-14 01:32:34,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 01:32:34,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 01:32:34,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 01:32:34,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 01:32:34,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 01:32:34,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:32:34" (1/1) ... [2019-01-14 01:32:34,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b00c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:34, skipping insertion in model container [2019-01-14 01:32:34,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:32:34" (1/1) ... [2019-01-14 01:32:34,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 01:32:34,883 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 01:32:35,098 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:32:35,106 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 01:32:35,125 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:32:35,140 INFO L195 MainTranslator]: Completed translation [2019-01-14 01:32:35,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35 WrapperNode [2019-01-14 01:32:35,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 01:32:35,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 01:32:35,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 01:32:35,144 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 01:32:35,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 01:32:35,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 01:32:35,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 01:32:35,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 01:32:35,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (1/1) ... [2019-01-14 01:32:35,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 01:32:35,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 01:32:35,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 01:32:35,217 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 01:32:35,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (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 [2019-01-14 01:32:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 01:32:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 01:32:35,621 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 01:32:35,622 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-14 01:32:35,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:32:35 BoogieIcfgContainer [2019-01-14 01:32:35,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 01:32:35,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 01:32:35,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 01:32:35,642 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 01:32:35,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 01:32:34" (1/3) ... [2019-01-14 01:32:35,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46822650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:32:35, skipping insertion in model container [2019-01-14 01:32:35,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:32:35" (2/3) ... [2019-01-14 01:32:35,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46822650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:32:35, skipping insertion in model container [2019-01-14 01:32:35,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:32:35" (3/3) ... [2019-01-14 01:32:35,649 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2019-01-14 01:32:35,669 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 01:32:35,679 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-14 01:32:35,700 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-14 01:32:35,756 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 01:32:35,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 01:32:35,761 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 01:32:35,761 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 01:32:35,761 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 01:32:35,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 01:32:35,761 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 01:32:35,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 01:32:35,762 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 01:32:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-01-14 01:32:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 01:32:35,802 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:32:35,803 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 01:32:35,806 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:32:35,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:32:35,814 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2019-01-14 01:32:35,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:32:35,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:32:35,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:35,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:35,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:32:36,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:32:36,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 01:32:36,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 01:32:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 01:32:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:32:36,026 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-01-14 01:32:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:32:36,217 INFO L93 Difference]: Finished difference Result 48 states and 69 transitions. [2019-01-14 01:32:36,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 01:32:36,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-01-14 01:32:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:32:36,228 INFO L225 Difference]: With dead ends: 48 [2019-01-14 01:32:36,228 INFO L226 Difference]: Without dead ends: 26 [2019-01-14 01:32:36,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 01:32:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-01-14 01:32:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-01-14 01:32:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-14 01:32:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-01-14 01:32:36,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 4 [2019-01-14 01:32:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:32:36,270 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-01-14 01:32:36,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 01:32:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-01-14 01:32:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 01:32:36,271 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:32:36,271 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 01:32:36,272 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:32:36,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:32:36,275 INFO L82 PathProgramCache]: Analyzing trace with hash 29867816, now seen corresponding path program 1 times [2019-01-14 01:32:36,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:32:36,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:32:36,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:36,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:32:36,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:32:36,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 01:32:36,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 01:32:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 01:32:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 01:32:36,308 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 3 states. [2019-01-14 01:32:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:32:36,379 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-01-14 01:32:36,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 01:32:36,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-01-14 01:32:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:32:36,382 INFO L225 Difference]: With dead ends: 19 [2019-01-14 01:32:36,382 INFO L226 Difference]: Without dead ends: 18 [2019-01-14 01:32:36,383 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 [2019-01-14 01:32:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-01-14 01:32:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-01-14 01:32:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-14 01:32:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-01-14 01:32:36,388 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2019-01-14 01:32:36,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:32:36,388 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-01-14 01:32:36,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 01:32:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-01-14 01:32:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 01:32:36,389 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:32:36,389 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 01:32:36,390 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:32:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:32:36,390 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-01-14 01:32:36,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:32:36,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:32:36,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:36,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:32:36,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:32:36,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 01:32:36,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 01:32:36,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 01:32:36,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 01:32:36,435 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2019-01-14 01:32:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:32:36,522 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-01-14 01:32:36,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 01:32:36,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-01-14 01:32:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:32:36,523 INFO L225 Difference]: With dead ends: 19 [2019-01-14 01:32:36,523 INFO L226 Difference]: Without dead ends: 12 [2019-01-14 01:32:36,524 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 [2019-01-14 01:32:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-14 01:32:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-01-14 01:32:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-14 01:32:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-01-14 01:32:36,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2019-01-14 01:32:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:32:36,527 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-01-14 01:32:36,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 01:32:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-01-14 01:32:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 01:32:36,528 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:32:36,528 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 01:32:36,529 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:32:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:32:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2019-01-14 01:32:36,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:32:36,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:32:36,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:36,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-14 01:32:36,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:32:36,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-14 01:32:36,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 01:32:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 01:32:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 01:32:36,606 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2019-01-14 01:32:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:32:36,687 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-01-14 01:32:36,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 01:32:36,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-14 01:32:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:32:36,689 INFO L225 Difference]: With dead ends: 11 [2019-01-14 01:32:36,689 INFO L226 Difference]: Without dead ends: 10 [2019-01-14 01:32:36,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 01:32:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-14 01:32:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-01-14 01:32:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-14 01:32:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-01-14 01:32:36,692 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2019-01-14 01:32:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:32:36,693 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-01-14 01:32:36,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 01:32:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-01-14 01:32:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 01:32:36,693 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:32:36,694 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-01-14 01:32:36,694 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:32:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:32:36,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2019-01-14 01:32:36,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:32:36,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:32:36,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:36,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:32:36,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 01:32:36,751 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 [2019-01-14 01:32:36,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:36,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 01:32:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:32:36,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 01:32:36,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-14 01:32:36,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 01:32:36,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 01:32:36,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:32:36,824 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-01-14 01:32:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:32:36,953 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-01-14 01:32:36,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 01:32:36,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-01-14 01:32:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:32:36,955 INFO L225 Difference]: With dead ends: 18 [2019-01-14 01:32:36,955 INFO L226 Difference]: Without dead ends: 17 [2019-01-14 01:32:36,956 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:32:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-01-14 01:32:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2019-01-14 01:32:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-01-14 01:32:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-01-14 01:32:36,961 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2019-01-14 01:32:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:32:36,961 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-01-14 01:32:36,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 01:32:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-01-14 01:32:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 01:32:36,963 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:32:36,963 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-01-14 01:32:36,964 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:32:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:32:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2000108501, now seen corresponding path program 2 times [2019-01-14 01:32:36,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:32:36,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:32:36,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:32:36,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:32:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:32:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:32:37,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 01:32:37,053 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 01:32:37,065 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-14 01:32:37,079 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-01-14 01:32:37,079 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-14 01:32:37,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 01:32:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-01-14 01:32:37,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 01:32:37,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2019-01-14 01:32:37,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-14 01:32:37,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-14 01:32:37,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-14 01:32:37,135 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2019-01-14 01:32:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:32:37,482 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-01-14 01:32:37,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-14 01:32:37,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-01-14 01:32:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:32:37,483 INFO L225 Difference]: With dead ends: 27 [2019-01-14 01:32:37,483 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 01:32:37,484 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-01-14 01:32:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 01:32:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 01:32:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 01:32:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 01:32:37,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-01-14 01:32:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:32:37,486 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 01:32:37,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-14 01:32:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 01:32:37,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 01:32:37,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 01:32:37,596 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 01:32:37,597 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-01-14 01:32:37,597 INFO L448 ceAbstractionStarter]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2019-01-14 01:32:37,597 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-01-14 01:32:37,597 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2019-01-14 01:32:37,598 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-01-14 01:32:37,598 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-01-14 01:32:37,598 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 01:32:37,598 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 01:32:37,598 INFO L444 ceAbstractionStarter]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 1) [2019-01-14 01:32:37,598 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-01-14 01:32:37,598 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-01-14 01:32:37,599 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-01-14 01:32:37,599 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-01-14 01:32:37,599 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-01-14 01:32:37,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 01:32:37 BoogieIcfgContainer [2019-01-14 01:32:37,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 01:32:37,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 01:32:37,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 01:32:37,614 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 01:32:37,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:32:35" (3/4) ... [2019-01-14 01:32:37,619 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 01:32:37,630 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-14 01:32:37,630 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 01:32:37,674 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 01:32:37,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 01:32:37,675 INFO L168 Benchmark]: Toolchain (without parser) took 2842.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -73.8 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. [2019-01-14 01:32:37,677 INFO L168 Benchmark]: CDTParser took 0.16 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. [2019-01-14 01:32:37,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.72 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. [2019-01-14 01:32:37,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.68 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. [2019-01-14 01:32:37,678 INFO L168 Benchmark]: Boogie Preprocessor took 31.75 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. [2019-01-14 01:32:37,679 INFO L168 Benchmark]: RCFGBuilder took 407.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-14 01:32:37,680 INFO L168 Benchmark]: TraceAbstraction took 1987.14 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: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. [2019-01-14 01:32:37,681 INFO L168 Benchmark]: Witness Printer took 60.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:32:37,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 305.72 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 40.68 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 31.75 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 407.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1987.14 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: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. * Witness Printer took 60.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 22]: 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: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 1 <= y) && 0 <= x - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 65 SDslu, 13 SDs, 0 SdLazy, 102 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 142 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 869 SizeOfPredicates, 1 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/19 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...