./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i --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/floats-cdfpl/square_2_false-unreach-call_true-termination.i -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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ...................................................................................................................................................................................................................... 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/floats-cdfpl/square_2_false-unreach-call_true-termination.i -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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ......................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 07:31:37,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:31:37,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:31:37,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:31:37,204 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:31:37,205 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:31:37,207 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:31:37,209 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:31:37,211 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:31:37,213 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:31:37,214 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:31:37,214 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:31:37,215 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:31:37,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:31:37,218 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:31:37,219 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:31:37,220 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:31:37,222 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:31:37,224 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:31:37,226 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:31:37,228 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:31:37,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:31:37,233 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:31:37,233 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:31:37,234 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:31:37,236 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:31:37,237 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:31:37,238 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:31:37,239 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:31:37,240 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:31:37,241 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:31:37,242 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:31:37,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:31:37,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:31:37,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:31:37,245 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:31:37,245 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 07:31:37,263 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:31:37,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:31:37,265 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:31:37,265 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:31:37,266 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:31:37,267 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:31:37,267 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:31:37,267 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 07:31:37,267 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:31:37,267 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:31:37,268 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:31:37,268 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:31:37,268 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:31:37,268 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:31:37,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:31:37,268 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:31:37,270 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:31:37,270 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:31:37,270 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:31:37,271 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:31:37,271 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:31:37,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:31:37,271 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:31:37,271 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:31:37,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:31:37,273 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 07:31:37,273 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:31:37,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 07:31:37,273 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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2019-01-12 07:31:37,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:31:37,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:31:37,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:31:37,384 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:31:37,385 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:31:37,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2019-01-12 07:31:37,466 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf69fc95/c2275ab8967a47a78066ca237196ab1c/FLAG38f5cf212 [2019-01-12 07:31:38,036 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:31:38,037 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2019-01-12 07:31:38,045 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf69fc95/c2275ab8967a47a78066ca237196ab1c/FLAG38f5cf212 [2019-01-12 07:31:38,336 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf69fc95/c2275ab8967a47a78066ca237196ab1c [2019-01-12 07:31:38,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:31:38,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:31:38,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:38,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:31:38,351 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:31:38,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1642445c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38, skipping insertion in model container [2019-01-12 07:31:38,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:31:38,390 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:31:38,645 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:38,653 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:31:38,681 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:38,706 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:31:38,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38 WrapperNode [2019-01-12 07:31:38,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:38,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:38,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:31:38,710 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:31:38,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:38,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:31:38,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:31:38,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:31:38,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (1/1) ... [2019-01-12 07:31:38,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:31:38,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:31:38,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:31:38,798 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:31:38,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (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 07:31:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:31:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:31:39,163 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:31:39,164 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:31:39,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:39 BoogieIcfgContainer [2019-01-12 07:31:39,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:31:39,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:31:39,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:31:39,172 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:31:39,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:31:38" (1/3) ... [2019-01-12 07:31:39,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8611a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:39, skipping insertion in model container [2019-01-12 07:31:39,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:38" (2/3) ... [2019-01-12 07:31:39,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8611a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:39, skipping insertion in model container [2019-01-12 07:31:39,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:39" (3/3) ... [2019-01-12 07:31:39,178 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2019-01-12 07:31:39,190 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:31:39,198 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 07:31:39,218 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 07:31:39,253 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:31:39,254 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:31:39,255 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:31:39,255 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:31:39,256 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:31:39,256 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:31:39,257 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:31:39,257 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:31:39,257 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:31:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-01-12 07:31:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-12 07:31:39,283 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:31:39,284 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-12 07:31:39,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:31:39,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:31:39,295 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-01-12 07:31:39,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 07:31:39,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 07:31:39,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:31:39,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:31:39,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:31:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:31:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:31:39,434 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 07:31:39,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:31:39 BoogieIcfgContainer [2019-01-12 07:31:39,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:31:39,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:31:39,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:31:39,458 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:31:39,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:39" (3/4) ... [2019-01-12 07:31:39,464 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 07:31:39,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:31:39,465 INFO L168 Benchmark]: Toolchain (without parser) took 1122.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -112.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:31:39,469 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:31:39,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.56 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 07:31:39,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.58 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:31:39,472 INFO L168 Benchmark]: Boogie Preprocessor took 33.97 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:31:39,472 INFO L168 Benchmark]: RCFGBuilder took 369.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-12 07:31:39,474 INFO L168 Benchmark]: TraceAbstraction took 288.96 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2019-01-12 07:31:39,475 INFO L168 Benchmark]: Witness Printer took 6.96 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 07:31:39,482 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.56 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 52.58 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.97 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 369.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 288.96 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.96 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: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.398f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. UNSAFE Result, 0.2s 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 07:31:42,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:31:42,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:31:42,063 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:31:42,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:31:42,065 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:31:42,066 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:31:42,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:31:42,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:31:42,072 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:31:42,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:31:42,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:31:42,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:31:42,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:31:42,077 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:31:42,077 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:31:42,078 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:31:42,081 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:31:42,083 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:31:42,085 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:31:42,086 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:31:42,088 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:31:42,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:31:42,091 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:31:42,091 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:31:42,092 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:31:42,094 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:31:42,094 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:31:42,096 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:31:42,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:31:42,099 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:31:42,101 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:31:42,101 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:31:42,101 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:31:42,102 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:31:42,104 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:31:42,105 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 07:31:42,141 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:31:42,143 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:31:42,144 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:31:42,145 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:31:42,146 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:31:42,146 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:31:42,146 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:31:42,147 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:31:42,148 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:31:42,148 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:31:42,148 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:31:42,148 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:31:42,148 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 07:31:42,149 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 07:31:42,149 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:31:42,150 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:31:42,150 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:31:42,150 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:31:42,150 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:31:42,150 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:31:42,151 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:31:42,151 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:31:42,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:31:42,151 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:31:42,151 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:31:42,154 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:31:42,155 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 07:31:42,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:31:42,155 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 07:31:42,155 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 07:31:42,156 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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2019-01-12 07:31:42,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:31:42,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:31:42,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:31:42,262 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:31:42,263 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:31:42,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2019-01-12 07:31:42,323 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396869113/aada7c0a47764beaa2ecd023c3f319a6/FLAG673d4b1d8 [2019-01-12 07:31:42,788 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:31:42,789 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2019-01-12 07:31:42,796 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396869113/aada7c0a47764beaa2ecd023c3f319a6/FLAG673d4b1d8 [2019-01-12 07:31:43,131 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396869113/aada7c0a47764beaa2ecd023c3f319a6 [2019-01-12 07:31:43,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:31:43,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:31:43,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:43,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:31:43,146 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:31:43,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1208df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43, skipping insertion in model container [2019-01-12 07:31:43,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:31:43,182 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:31:43,367 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:43,378 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:31:43,400 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:43,418 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:31:43,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43 WrapperNode [2019-01-12 07:31:43,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:43,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:43,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:31:43,421 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:31:43,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:43,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:31:43,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:31:43,456 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:31:43,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (1/1) ... [2019-01-12 07:31:43,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:31:43,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:31:43,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:31:43,488 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:31:43,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (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 07:31:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:31:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:31:45,935 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:31:45,936 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:31:45,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:45 BoogieIcfgContainer [2019-01-12 07:31:45,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:31:45,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:31:45,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:31:45,943 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:31:45,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:31:43" (1/3) ... [2019-01-12 07:31:45,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c23e499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:45, skipping insertion in model container [2019-01-12 07:31:45,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:43" (2/3) ... [2019-01-12 07:31:45,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c23e499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:45, skipping insertion in model container [2019-01-12 07:31:45,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:45" (3/3) ... [2019-01-12 07:31:45,949 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2019-01-12 07:31:45,958 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:31:45,965 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 07:31:45,980 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 07:31:46,015 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:31:46,016 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:31:46,017 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:31:46,017 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:31:46,017 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:31:46,018 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:31:46,018 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:31:46,018 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:31:46,018 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:31:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-12 07:31:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-12 07:31:46,041 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:31:46,042 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-12 07:31:46,045 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:31:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:31:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-01-12 07:31:46,057 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:31:46,058 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 07:31:46,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:34:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:35:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:35:09,106 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 07:35:09,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:35:09 BoogieIcfgContainer [2019-01-12 07:35:09,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:35:09,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:35:09,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:35:09,166 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:35:09,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:45" (3/4) ... [2019-01-12 07:35:09,170 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 07:35:09,223 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 07:35:09,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:35:09,225 INFO L168 Benchmark]: Toolchain (without parser) took 206087.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:35:09,227 INFO L168 Benchmark]: CDTParser took 0.45 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 07:35:09,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.85 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. [2019-01-12 07:35:09,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.25 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 07:35:09,229 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 07:35:09,230 INFO L168 Benchmark]: RCFGBuilder took 2449.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-01-12 07:35:09,231 INFO L168 Benchmark]: TraceAbstraction took 203225.87 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-01-12 07:35:09,233 INFO L168 Benchmark]: Witness Printer took 58.50 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 07:35:09,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 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 279.85 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 35.25 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.29 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2449.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 203225.87 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 58.50 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: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.398f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. UNSAFE Result, 203.1s 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=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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 153.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 proved your program to be incorrect! Received shutdown request...