./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive-simple/id_b5_o10_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 0449565d36be00deee168302da89fb227fc941e3 ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:57:09,230 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 01:57:09,231 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 01:57:09,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 01:57:09,243 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 01:57:09,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 01:57:09,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 01:57:09,248 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 01:57:09,250 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 01:57:09,251 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 01:57:09,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 01:57:09,252 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 01:57:09,253 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 01:57:09,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 01:57:09,255 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 01:57:09,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 01:57:09,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 01:57:09,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 01:57:09,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 01:57:09,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 01:57:09,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 01:57:09,266 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 01:57:09,269 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 01:57:09,270 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 01:57:09,270 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 01:57:09,271 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 01:57:09,272 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 01:57:09,273 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 01:57:09,274 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 01:57:09,275 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 01:57:09,276 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 01:57:09,276 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 01:57:09,277 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 01:57:09,277 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 01:57:09,278 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 01:57:09,279 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 01:57:09,279 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-01-14 01:57:09,302 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 01:57:09,302 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 01:57:09,304 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 01:57:09,304 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 01:57:09,305 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 01:57:09,305 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 01:57:09,305 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 01:57:09,305 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 01:57:09,305 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 01:57:09,305 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 01:57:09,306 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 01:57:09,306 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 01:57:09,306 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 01:57:09,306 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 01:57:09,306 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 01:57:09,306 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 01:57:09,307 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 01:57:09,307 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 01:57:09,307 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 01:57:09,307 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 01:57:09,307 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 01:57:09,307 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 01:57:09,309 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 01:57:09,309 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 01:57:09,309 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 01:57:09,309 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 01:57:09,309 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 01:57:09,310 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 01:57:09,310 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 01:57:09,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 01:57:09,310 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 -> 0449565d36be00deee168302da89fb227fc941e3 [2019-01-14 01:57:09,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 01:57:09,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 01:57:09,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 01:57:09,368 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 01:57:09,368 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 01:57:09,369 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2019-01-14 01:57:09,428 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3e22da1/7092c10a1ece49b984bf7a6199a3e2da/FLAG21e9a5572 [2019-01-14 01:57:09,913 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 01:57:09,913 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2019-01-14 01:57:09,921 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3e22da1/7092c10a1ece49b984bf7a6199a3e2da/FLAG21e9a5572 [2019-01-14 01:57:10,266 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3e22da1/7092c10a1ece49b984bf7a6199a3e2da [2019-01-14 01:57:10,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 01:57:10,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 01:57:10,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 01:57:10,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 01:57:10,276 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 01:57:10,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eab8d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10, skipping insertion in model container [2019-01-14 01:57:10,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 01:57:10,311 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 01:57:10,478 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:57:10,483 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 01:57:10,500 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:57:10,516 INFO L195 MainTranslator]: Completed translation [2019-01-14 01:57:10,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10 WrapperNode [2019-01-14 01:57:10,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 01:57:10,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 01:57:10,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 01:57:10,519 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 01:57:10,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 01:57:10,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 01:57:10,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 01:57:10,555 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 01:57:10,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (1/1) ... [2019-01-14 01:57:10,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 01:57:10,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 01:57:10,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 01:57:10,576 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 01:57:10,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (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 [2019-01-14 01:57:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 01:57:10,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 01:57:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-01-14 01:57:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-01-14 01:57:10,971 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 01:57:10,972 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 01:57:10,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:57:10 BoogieIcfgContainer [2019-01-14 01:57:10,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 01:57:10,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 01:57:10,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 01:57:10,979 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 01:57:10,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 01:57:10" (1/3) ... [2019-01-14 01:57:10,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9d4109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:57:10, skipping insertion in model container [2019-01-14 01:57:10,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:57:10" (2/3) ... [2019-01-14 01:57:10,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9d4109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:57:10, skipping insertion in model container [2019-01-14 01:57:10,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:57:10" (3/3) ... [2019-01-14 01:57:10,990 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2019-01-14 01:57:11,018 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 01:57:11,034 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-14 01:57:11,062 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-14 01:57:11,114 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 01:57:11,114 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 01:57:11,115 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 01:57:11,115 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 01:57:11,115 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 01:57:11,115 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 01:57:11,116 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 01:57:11,116 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 01:57:11,116 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 01:57:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-01-14 01:57:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 01:57:11,143 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:57:11,144 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 01:57:11,146 INFO L423 AbstractCegarLoop]: === Iteration 1 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:57:11,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:57:11,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1550668038, now seen corresponding path program 1 times [2019-01-14 01:57:11,154 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:57:11,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:57:11,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:11,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:57:11,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:57:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-01-14 01:57:11,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:57:11,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 01:57:11,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 01:57:11,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 01:57:11,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:57:11,356 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-01-14 01:57:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:57:11,442 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-01-14 01:57:11,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 01:57:11,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 01:57:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:57:11,453 INFO L225 Difference]: With dead ends: 29 [2019-01-14 01:57:11,454 INFO L226 Difference]: Without dead ends: 18 [2019-01-14 01:57:11,457 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 [2019-01-14 01:57:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-01-14 01:57:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-01-14 01:57:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-14 01:57:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-01-14 01:57:11,492 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-01-14 01:57:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:57:11,493 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-01-14 01:57:11,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 01:57:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-01-14 01:57:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-01-14 01:57:11,494 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:57:11,494 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 01:57:11,495 INFO L423 AbstractCegarLoop]: === Iteration 2 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:57:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:57:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash -554411409, now seen corresponding path program 1 times [2019-01-14 01:57:11,496 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:57:11,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:57:11,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:11,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:57:11,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:57:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-01-14 01:57:11,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:57:11,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 01:57:11,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 01:57:11,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 01:57:11,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 01:57:11,615 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-01-14 01:57:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:57:11,715 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-01-14 01:57:11,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 01:57:11,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-01-14 01:57:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:57:11,719 INFO L225 Difference]: With dead ends: 29 [2019-01-14 01:57:11,719 INFO L226 Difference]: Without dead ends: 21 [2019-01-14 01:57:11,720 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 [2019-01-14 01:57:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-14 01:57:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-01-14 01:57:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-14 01:57:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-01-14 01:57:11,725 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 23 [2019-01-14 01:57:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:57:11,726 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-01-14 01:57:11,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 01:57:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-01-14 01:57:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 01:57:11,727 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:57:11,727 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 01:57:11,727 INFO L423 AbstractCegarLoop]: === Iteration 3 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:57:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:57:11,728 INFO L82 PathProgramCache]: Analyzing trace with hash 877327312, now seen corresponding path program 1 times [2019-01-14 01:57:11,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:57:11,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:57:11,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:11,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:57:11,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:57:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-14 01:57:11,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 01:57:11,906 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 01:57:11,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:57:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:57:11,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 01:57:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-14 01:57:12,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 01:57:12,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-01-14 01:57:12,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-14 01:57:12,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-14 01:57:12,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-01-14 01:57:12,211 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2019-01-14 01:57:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:57:12,313 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-01-14 01:57:12,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 01:57:12,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-01-14 01:57:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:57:12,316 INFO L225 Difference]: With dead ends: 25 [2019-01-14 01:57:12,316 INFO L226 Difference]: Without dead ends: 24 [2019-01-14 01:57:12,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-01-14 01:57:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-01-14 01:57:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-01-14 01:57:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-14 01:57:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-01-14 01:57:12,324 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2019-01-14 01:57:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:57:12,325 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-01-14 01:57:12,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-14 01:57:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-01-14 01:57:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-01-14 01:57:12,327 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:57:12,327 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-01-14 01:57:12,328 INFO L423 AbstractCegarLoop]: === Iteration 4 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:57:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:57:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash 21744710, now seen corresponding path program 1 times [2019-01-14 01:57:12,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:57:12,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:57:12,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:12,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:57:12,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:57:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-01-14 01:57:12,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:57:12,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 01:57:12,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 01:57:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 01:57:12,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 01:57:12,407 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-01-14 01:57:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:57:12,450 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-01-14 01:57:12,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 01:57:12,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-01-14 01:57:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:57:12,452 INFO L225 Difference]: With dead ends: 23 [2019-01-14 01:57:12,452 INFO L226 Difference]: Without dead ends: 22 [2019-01-14 01:57:12,453 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 01:57:12,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-01-14 01:57:12,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-01-14 01:57:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-14 01:57:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-01-14 01:57:12,459 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 24 [2019-01-14 01:57:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:57:12,459 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-01-14 01:57:12,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 01:57:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-01-14 01:57:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-01-14 01:57:12,461 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:57:12,462 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-01-14 01:57:12,462 INFO L423 AbstractCegarLoop]: === Iteration 5 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:57:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:57:12,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1394216999, now seen corresponding path program 1 times [2019-01-14 01:57:12,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:57:12,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:57:12,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:12,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:57:12,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:57:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:57:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-01-14 01:57:12,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:57:12,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 01:57:12,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 01:57:12,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 01:57:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:57:12,549 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2019-01-14 01:57:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:57:12,586 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-01-14 01:57:12,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 01:57:12,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-01-14 01:57:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:57:12,588 INFO L225 Difference]: With dead ends: 22 [2019-01-14 01:57:12,589 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 01:57:12,590 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 [2019-01-14 01:57:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 01:57:12,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 01:57:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 01:57:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 01:57:12,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-01-14 01:57:12,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:57:12,591 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 01:57:12,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 01:57:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 01:57:12,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 01:57:12,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 01:57:12,607 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 01:57:12,607 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 01:57:12,607 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 01:57:12,607 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-01-14 01:57:12,607 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-01-14 01:57:12,608 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2019-01-14 01:57:12,608 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-01-14 01:57:12,608 INFO L448 ceAbstractionStarter]: For program point L11(lines 11 17) no Hoare annotation was computed. [2019-01-14 01:57:12,608 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2019-01-14 01:57:12,608 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2019-01-14 01:57:12,609 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2019-01-14 01:57:12,609 INFO L448 ceAbstractionStarter]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2019-01-14 01:57:12,609 INFO L448 ceAbstractionStarter]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2019-01-14 01:57:12,610 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-01-14 01:57:12,611 INFO L451 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2019-01-14 01:57:12,611 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-14 01:57:12,611 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-01-14 01:57:12,611 INFO L448 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-01-14 01:57:12,611 INFO L448 ceAbstractionStarter]: For program point L6-3(line 6) no Hoare annotation was computed. [2019-01-14 01:57:12,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 01:57:12 BoogieIcfgContainer [2019-01-14 01:57:12,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 01:57:12,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 01:57:12,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 01:57:12,615 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 01:57:12,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:57:10" (3/4) ... [2019-01-14 01:57:12,620 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 01:57:12,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-01-14 01:57:12,631 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-14 01:57:12,632 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 01:57:12,679 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 01:57:12,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 01:57:12,680 INFO L168 Benchmark]: Toolchain (without parser) took 2409.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -78.8 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. [2019-01-14 01:57:12,682 INFO L168 Benchmark]: CDTParser took 0.21 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 01:57:12,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.35 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 01:57:12,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.90 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 01:57:12,683 INFO L168 Benchmark]: Boogie Preprocessor took 20.79 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 01:57:12,684 INFO L168 Benchmark]: RCFGBuilder took 397.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-14 01:57:12,684 INFO L168 Benchmark]: TraceAbstraction took 1640.40 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: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 11.5 GB. [2019-01-14 01:57:12,685 INFO L168 Benchmark]: Witness Printer took 63.85 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-01-14 01:57:12,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 245.35 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 35.90 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 20.79 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 397.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1640.40 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: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 11.5 GB. * Witness Printer took 63.85 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: 6.5 MB). Peak memory consumption was 6.5 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 2 procedures, 19 locations, 2 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 10 SDslu, 126 SDs, 0 SdLazy, 77 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 4131 SizeOfPredicates, 1 NumberOfNonLiveVariables, 48 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...