./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-benchs/inv_square_int_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/float-benchs/inv_square_int_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a264ac1dee459017a9965df88403c901cb7750b ...................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/float-benchs/inv_square_int_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a264ac1dee459017a9965df88403c901cb7750b ............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 08:27:08,225 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 08:27:08,227 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 08:27:08,239 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 08:27:08,239 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 08:27:08,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 08:27:08,246 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 08:27:08,250 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 08:27:08,255 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 08:27:08,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 08:27:08,261 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 08:27:08,261 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 08:27:08,262 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 08:27:08,265 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 08:27:08,268 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 08:27:08,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 08:27:08,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 08:27:08,277 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 08:27:08,282 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 08:27:08,286 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 08:27:08,288 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 08:27:08,292 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 08:27:08,294 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 08:27:08,295 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 08:27:08,297 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 08:27:08,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 08:27:08,299 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 08:27:08,300 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 08:27:08,304 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 08:27:08,305 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 08:27:08,305 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 08:27:08,306 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 08:27:08,306 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 08:27:08,307 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 08:27:08,310 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 08:27:08,310 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 08:27:08,311 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 08:27:08,336 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 08:27:08,336 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 08:27:08,337 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 08:27:08,337 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 08:27:08,337 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 08:27:08,338 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 08:27:08,338 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 08:27:08,338 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 08:27:08,338 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 08:27:08,338 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 08:27:08,338 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 08:27:08,339 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 08:27:08,339 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 08:27:08,339 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 08:27:08,339 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 08:27:08,339 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 08:27:08,340 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 08:27:08,340 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 08:27:08,340 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 08:27:08,340 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 08:27:08,340 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 08:27:08,340 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 08:27:08,341 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 08:27:08,341 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 08:27:08,341 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 08:27:08,341 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 08:27:08,341 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 08:27:08,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 08:27:08,342 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 ! call(__VERIFIER_error())) ) 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 -> 0a264ac1dee459017a9965df88403c901cb7750b [2019-01-12 08:27:08,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 08:27:08,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 08:27:08,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 08:27:08,397 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 08:27:08,397 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 08:27:08,398 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-benchs/inv_square_int_true-unreach-call_true-termination.c [2019-01-12 08:27:08,461 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213250700/6af2255831914fcdb5c42a9ba5df59b8/FLAG1d50e66cc [2019-01-12 08:27:08,880 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 08:27:08,881 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-benchs/inv_square_int_true-unreach-call_true-termination.c [2019-01-12 08:27:08,887 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213250700/6af2255831914fcdb5c42a9ba5df59b8/FLAG1d50e66cc [2019-01-12 08:27:09,274 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213250700/6af2255831914fcdb5c42a9ba5df59b8 [2019-01-12 08:27:09,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 08:27:09,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 08:27:09,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 08:27:09,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 08:27:09,283 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 08:27:09,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120b707f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09, skipping insertion in model container [2019-01-12 08:27:09,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 08:27:09,311 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 08:27:09,470 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 08:27:09,475 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 08:27:09,493 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 08:27:09,508 INFO L195 MainTranslator]: Completed translation [2019-01-12 08:27:09,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09 WrapperNode [2019-01-12 08:27:09,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 08:27:09,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 08:27:09,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 08:27:09,510 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 08:27:09,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 08:27:09,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 08:27:09,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 08:27:09,551 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 08:27:09,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (1/1) ... [2019-01-12 08:27:09,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 08:27:09,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 08:27:09,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 08:27:09,577 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 08:27:09,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (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 [2019-01-12 08:27:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 08:27:09,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 08:27:09,944 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 08:27:09,944 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-12 08:27:09,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 08:27:09 BoogieIcfgContainer [2019-01-12 08:27:09,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 08:27:09,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 08:27:09,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 08:27:09,950 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 08:27:09,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 08:27:09" (1/3) ... [2019-01-12 08:27:09,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527042cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 08:27:09, skipping insertion in model container [2019-01-12 08:27:09,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:09" (2/3) ... [2019-01-12 08:27:09,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527042cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 08:27:09, skipping insertion in model container [2019-01-12 08:27:09,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 08:27:09" (3/3) ... [2019-01-12 08:27:09,953 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_int_true-unreach-call_true-termination.c [2019-01-12 08:27:09,964 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 08:27:09,972 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 08:27:09,989 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 08:27:10,018 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 08:27:10,019 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 08:27:10,019 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 08:27:10,019 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 08:27:10,019 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 08:27:10,019 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 08:27:10,019 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 08:27:10,019 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 08:27:10,020 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 08:27:10,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-01-12 08:27:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-12 08:27:10,041 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 08:27:10,042 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-12 08:27:10,044 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 08:27:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 08:27:10,051 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-01-12 08:27:10,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 08:27:10,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 08:27:10,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 08:27:10,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 08:27:10,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 08:27:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 08:27:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 08:27:10,162 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 08:27:10,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 08:27:10 BoogieIcfgContainer [2019-01-12 08:27:10,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 08:27:10,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 08:27:10,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 08:27:10,182 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 08:27:10,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 08:27:09" (3/4) ... [2019-01-12 08:27:10,186 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 08:27:10,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 08:27:10,187 INFO L168 Benchmark]: Toolchain (without parser) took 909.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 08:27:10,190 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-01-12 08:27:10,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.68 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:10,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.67 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 08:27:10,192 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 08:27:10,193 INFO L168 Benchmark]: RCFGBuilder took 368.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:10,194 INFO L168 Benchmark]: TraceAbstraction took 234.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:10,195 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 08:27:10,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 229.68 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 40.67 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.57 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 368.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 19, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] int x; [L13] float y, z; [L15] x = __VERIFIER_nondet_int() [L18] y = x*x - 2.f [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-0ed9222-m [2019-01-12 08:27:12,529 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 08:27:12,531 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 08:27:12,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 08:27:12,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 08:27:12,556 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 08:27:12,558 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 08:27:12,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 08:27:12,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 08:27:12,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 08:27:12,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 08:27:12,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 08:27:12,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 08:27:12,576 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 08:27:12,577 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 08:27:12,580 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 08:27:12,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 08:27:12,586 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 08:27:12,592 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 08:27:12,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 08:27:12,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 08:27:12,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 08:27:12,606 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 08:27:12,608 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 08:27:12,608 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 08:27:12,609 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 08:27:12,610 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 08:27:12,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 08:27:12,616 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 08:27:12,617 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 08:27:12,617 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 08:27:12,618 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 08:27:12,618 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 08:27:12,618 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 08:27:12,620 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 08:27:12,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 08:27:12,621 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 08:27:12,642 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 08:27:12,642 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 08:27:12,643 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 08:27:12,643 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 08:27:12,644 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 08:27:12,644 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 08:27:12,644 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 08:27:12,644 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 08:27:12,644 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 08:27:12,644 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 08:27:12,645 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 08:27:12,645 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 08:27:12,645 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 08:27:12,645 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 08:27:12,645 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 08:27:12,645 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 08:27:12,646 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 08:27:12,646 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 08:27:12,646 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 08:27:12,646 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 08:27:12,646 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 08:27:12,647 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 08:27:12,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 08:27:12,647 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 08:27:12,647 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 08:27:12,647 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 08:27:12,647 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 08:27:12,648 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 08:27:12,648 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 08:27:12,648 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 08:27:12,648 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 ! call(__VERIFIER_error())) ) 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 -> 0a264ac1dee459017a9965df88403c901cb7750b [2019-01-12 08:27:12,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 08:27:12,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 08:27:12,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 08:27:12,719 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 08:27:12,720 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 08:27:12,720 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-benchs/inv_square_int_true-unreach-call_true-termination.c [2019-01-12 08:27:12,788 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec5a20a6/1b7ef730d61d4b47ba49d886129f6c21/FLAGcf7f92327 [2019-01-12 08:27:13,184 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 08:27:13,184 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-benchs/inv_square_int_true-unreach-call_true-termination.c [2019-01-12 08:27:13,190 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec5a20a6/1b7ef730d61d4b47ba49d886129f6c21/FLAGcf7f92327 [2019-01-12 08:27:13,595 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec5a20a6/1b7ef730d61d4b47ba49d886129f6c21 [2019-01-12 08:27:13,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 08:27:13,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 08:27:13,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 08:27:13,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 08:27:13,604 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 08:27:13,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae4de63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13, skipping insertion in model container [2019-01-12 08:27:13,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 08:27:13,636 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 08:27:13,863 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 08:27:13,873 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 08:27:13,893 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 08:27:13,910 INFO L195 MainTranslator]: Completed translation [2019-01-12 08:27:13,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13 WrapperNode [2019-01-12 08:27:13,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 08:27:13,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 08:27:13,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 08:27:13,912 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 08:27:13,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 08:27:13,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 08:27:13,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 08:27:13,953 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 08:27:13,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (1/1) ... [2019-01-12 08:27:13,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 08:27:13,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 08:27:13,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 08:27:13,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 08:27:13,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (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 [2019-01-12 08:27:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 08:27:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 08:27:14,930 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 08:27:14,931 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-12 08:27:14,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 08:27:14 BoogieIcfgContainer [2019-01-12 08:27:14,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 08:27:14,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 08:27:14,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 08:27:14,936 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 08:27:14,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 08:27:13" (1/3) ... [2019-01-12 08:27:14,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e23701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 08:27:14, skipping insertion in model container [2019-01-12 08:27:14,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 08:27:13" (2/3) ... [2019-01-12 08:27:14,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e23701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 08:27:14, skipping insertion in model container [2019-01-12 08:27:14,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 08:27:14" (3/3) ... [2019-01-12 08:27:14,940 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_int_true-unreach-call_true-termination.c [2019-01-12 08:27:14,948 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 08:27:14,955 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 08:27:14,970 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 08:27:15,002 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 08:27:15,003 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 08:27:15,003 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 08:27:15,003 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 08:27:15,004 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 08:27:15,004 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 08:27:15,005 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 08:27:15,005 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 08:27:15,005 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 08:27:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-12 08:27:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-12 08:27:15,026 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 08:27:15,027 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-12 08:27:15,030 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 08:27:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 08:27:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-01-12 08:27:15,041 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 08:27:15,042 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-01-12 08:27:15,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 08:27:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 08:27:15,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 08:27:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 08:27:19,914 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 08:27:19,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 08:27:19,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 08:27:19,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 08:27:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 08:27:19,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 08:27:19,951 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-01-12 08:27:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 08:27:19,971 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-01-12 08:27:19,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 08:27:19,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-12 08:27:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 08:27:19,981 INFO L225 Difference]: With dead ends: 13 [2019-01-12 08:27:19,981 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 08:27:19,984 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 08:27:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 08:27:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 08:27:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 08:27:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 08:27:20,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-12 08:27:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 08:27:20,011 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 08:27:20,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 08:27:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 08:27:20,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 08:27:20,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 08:27:20,069 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 08:27:20,069 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 08:27:20,070 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-01-12 08:27:20,070 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 08:27:20,070 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 08:27:20,070 INFO L444 ceAbstractionStarter]: At program point L21(lines 10 22) the Hoare annotation is: (= (_ bv1 32) ULTIMATE.start___VERIFIER_assert_~cond) [2019-01-12 08:27:20,070 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-01-12 08:27:20,071 INFO L448 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-01-12 08:27:20,071 INFO L444 ceAbstractionStarter]: At program point L8-3(line 8) the Hoare annotation is: (= (_ bv1 32) ULTIMATE.start___VERIFIER_assert_~cond) [2019-01-12 08:27:20,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 08:27:20 BoogieIcfgContainer [2019-01-12 08:27:20,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 08:27:20,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 08:27:20,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 08:27:20,088 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 08:27:20,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 08:27:14" (3/4) ... [2019-01-12 08:27:20,094 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 08:27:20,106 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-12 08:27:20,106 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 08:27:20,107 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-12 08:27:20,154 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 08:27:20,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 08:27:20,156 INFO L168 Benchmark]: Toolchain (without parser) took 6557.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -112.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:20,158 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-01-12 08:27:20,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.28 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. [2019-01-12 08:27:20,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.23 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. [2019-01-12 08:27:20,160 INFO L168 Benchmark]: Boogie Preprocessor took 27.52 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:20,161 INFO L168 Benchmark]: RCFGBuilder took 951.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -155.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:20,162 INFO L168 Benchmark]: TraceAbstraction took 5154.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-01-12 08:27:20,164 INFO L168 Benchmark]: Witness Printer took 67.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 08:27:20,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.28 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 40.23 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 27.52 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 951.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -155.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5154.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1bv32 == cond - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1bv32 == cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 5.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 4 NumberOfNonLiveVariables, 10 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...