./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/floats-cdfpl/square_1.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 9b4984d971b5a5a3b565edf502e7d7464558f166 .......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/floats-cdfpl/square_1.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 9b4984d971b5a5a3b565edf502e7d7464558f166 ................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-11-28 16:37:58,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:37:58,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:37:58,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:37:58,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:37:58,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:37:58,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:37:58,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:37:58,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:37:58,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:37:58,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:37:58,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:37:58,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:37:58,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:37:58,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:37:58,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:37:58,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:37:58,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:37:58,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:37:58,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:37:58,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:37:58,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:37:58,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:37:58,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:37:58,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:37:58,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:37:58,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:37:58,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:37:58,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:37:58,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:37:58,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:37:58,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:37:58,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:37:58,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:37:58,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:37:58,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:37:58,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:37:58,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:37:58,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:37:58,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:37:58,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:37:58,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:37:58,617 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:37:58,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:37:58,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:37:58,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:37:58,619 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:37:58,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:37:58,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:37:58,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:37:58,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:37:58,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:37:58,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:37:58,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:37:58,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:37:58,623 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:37:58,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:37:58,623 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:37:58,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:37:58,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:37:58,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:37:58,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:37:58,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:37:58,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:37:58,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:37:58,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:37:58,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:37:58,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:37:58,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:37:58,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:37:58,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:37:58,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-28 16:37:58,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:37:58,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:37:58,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:37:58,963 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:37:58,963 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:37:58,964 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-28 16:37:59,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4ede384/47a33a8b3f3b452f9fc81e89cb13797a/FLAG7c43849e8 [2019-11-28 16:37:59,449 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:37:59,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-28 16:37:59,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4ede384/47a33a8b3f3b452f9fc81e89cb13797a/FLAG7c43849e8 [2019-11-28 16:37:59,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4ede384/47a33a8b3f3b452f9fc81e89cb13797a [2019-11-28 16:37:59,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:37:59,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:37:59,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:37:59,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:37:59,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:37:59,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:59" (1/1) ... [2019-11-28 16:37:59,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc7dcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:59, skipping insertion in model container [2019-11-28 16:37:59,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:59" (1/1) ... [2019-11-28 16:37:59,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:37:59,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:38:00,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:00,061 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:38:00,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:00,099 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:38:00,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00 WrapperNode [2019-11-28 16:38:00,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:00,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:00,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:38:00,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:38:00,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:00,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:38:00,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:38:00,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:38:00,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (1/1) ... [2019-11-28 16:38:00,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:38:00,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:38:00,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:38:00,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:38:00,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (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 [2019-11-28 16:38:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:38:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:38:00,390 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:38:00,390 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:38:00,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:00 BoogieIcfgContainer [2019-11-28 16:38:00,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:38:00,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:38:00,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:38:00,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:38:00,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:37:59" (1/3) ... [2019-11-28 16:38:00,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ffee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:00, skipping insertion in model container [2019-11-28 16:38:00,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:00" (2/3) ... [2019-11-28 16:38:00,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ffee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:00, skipping insertion in model container [2019-11-28 16:38:00,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:00" (3/3) ... [2019-11-28 16:38:00,399 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-28 16:38:00,406 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:38:00,411 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:38:00,420 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:38:00,442 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:38:00,443 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:38:00,443 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:38:00,443 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:38:00,443 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:38:00,444 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:38:00,444 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:38:00,444 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:38:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-28 16:38:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 16:38:00,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:38:00,463 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 16:38:00,463 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:38:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:38:00,468 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-28 16:38:00,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:38:00,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5969934] [2019-11-28 16:38:00,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:38:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:38:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:38:00,574 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:38:00,575 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:38:00,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:38:00 BoogieIcfgContainer [2019-11-28 16:38:00,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:38:00,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:38:00,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:38:00,591 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:38:00,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:00" (3/4) ... [2019-11-28 16:38:00,594 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:38:00,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:38:00,597 INFO L168 Benchmark]: Toolchain (without parser) took 748.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -132.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:38:00,598 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:38:00,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.57 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:00,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:00,601 INFO L168 Benchmark]: Boogie Preprocessor took 15.98 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. [2019-11-28 16:38:00,602 INFO L168 Benchmark]: RCFGBuilder took 180.25 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:00,603 INFO L168 Benchmark]: TraceAbstraction took 197.43 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. [2019-11-28 16:38:00,604 INFO L168 Benchmark]: Witness Printer took 4.43 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. [2019-11-28 16:38:00,608 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.57 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 93.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.98 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. * RCFGBuilder took 180.25 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 197.43 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 4.43 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: 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 < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, 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 DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-11-28 16:38:02,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:38:02,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:38:02,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:38:02,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:38:02,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:38:02,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:38:02,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:38:02,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:38:02,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:38:02,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:38:02,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:38:02,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:38:02,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:38:02,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:38:02,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:38:02,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:38:02,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:38:02,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:38:02,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:38:02,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:38:02,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:38:02,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:38:02,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:38:02,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:38:02,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:38:02,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:38:02,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:38:02,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:38:02,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:38:02,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:38:02,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:38:02,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:38:02,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:38:02,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:38:02,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:38:02,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:38:02,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:38:02,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:38:02,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:38:02,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:38:02,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:38:02,656 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:38:02,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:38:02,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:38:02,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:38:02,658 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:38:02,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:38:02,659 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:38:02,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:38:02,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:38:02,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:38:02,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:38:02,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:38:02,660 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:38:02,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:38:02,661 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:38:02,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:38:02,662 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:38:02,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:38:02,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:38:02,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:38:02,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:38:02,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:38:02,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:38:02,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:38:02,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:38:02,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:38:02,664 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:38:02,665 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:38:02,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:38:02,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:38:02,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:38:02,666 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-28 16:38:02,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:38:02,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:38:02,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:38:02,989 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:38:02,990 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:38:02,991 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-28 16:38:03,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17c9c0a1/36ae9fb7d95a46f1a5d9a7b7c69bc5df/FLAG34fbe930f [2019-11-28 16:38:03,468 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:38:03,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-28 16:38:03,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17c9c0a1/36ae9fb7d95a46f1a5d9a7b7c69bc5df/FLAG34fbe930f [2019-11-28 16:38:03,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17c9c0a1/36ae9fb7d95a46f1a5d9a7b7c69bc5df [2019-11-28 16:38:03,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:38:03,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:38:03,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:03,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:38:03,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:38:03,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:03" (1/1) ... [2019-11-28 16:38:03,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:03, skipping insertion in model container [2019-11-28 16:38:03,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:03" (1/1) ... [2019-11-28 16:38:03,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:38:03,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:38:04,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:04,061 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:38:04,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:38:04,095 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:38:04,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04 WrapperNode [2019-11-28 16:38:04,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:38:04,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:04,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:38:04,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:38:04,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:38:04,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:38:04,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:38:04,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:38:04,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (1/1) ... [2019-11-28 16:38:04,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:38:04,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:38:04,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:38:04,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:38:04,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (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 [2019-11-28 16:38:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:38:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:38:06,474 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:38:06,474 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:38:06,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:06 BoogieIcfgContainer [2019-11-28 16:38:06,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:38:06,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:38:06,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:38:06,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:38:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:38:03" (1/3) ... [2019-11-28 16:38:06,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a10d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:06, skipping insertion in model container [2019-11-28 16:38:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:04" (2/3) ... [2019-11-28 16:38:06,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a10d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:06, skipping insertion in model container [2019-11-28 16:38:06,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:06" (3/3) ... [2019-11-28 16:38:06,483 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-28 16:38:06,491 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:38:06,496 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:38:06,505 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:38:06,527 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:38:06,528 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:38:06,528 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:38:06,528 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:38:06,529 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:38:06,529 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:38:06,529 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:38:06,529 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:38:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-28 16:38:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:38:06,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:38:06,548 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:38:06,549 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:38:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:38:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-28 16:38:06,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:38:06,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641510092] [2019-11-28 16:38:06,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 16:38:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:38:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:38:38,265 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:38:38,266 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:38:38,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:38:38,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:38:38 BoogieIcfgContainer [2019-11-28 16:38:38,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:38:38,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:38:38,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:38:38,487 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:38:38,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:06" (3/4) ... [2019-11-28 16:38:38,490 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:38:38,526 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:38:38,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:38:38,529 INFO L168 Benchmark]: Toolchain (without parser) took 34654.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -111.0 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,529 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:38:38,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.39 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,532 INFO L168 Benchmark]: Boogie Preprocessor took 21.44 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,533 INFO L168 Benchmark]: RCFGBuilder took 2270.46 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,534 INFO L168 Benchmark]: TraceAbstraction took 32010.26 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:38:38,535 INFO L168 Benchmark]: Witness Printer took 39.72 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. [2019-11-28 16:38:38,539 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 221.39 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 86.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.44 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2270.46 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 32010.26 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Witness Printer took 39.72 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: - 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 < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 31.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, 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 DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 16.5s 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, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...