./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/floats-cdfpl/square_1_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_1_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 9b4984d971b5a5a3b565edf502e7d7464558f166 ...................................................................................................................................................................................................................... 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_1_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 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 0.1.24-0ed9222-m [2019-01-12 07:31:16,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:31:16,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:31:16,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:31:16,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:31:16,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:31:16,507 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:31:16,509 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:31:16,512 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:31:16,515 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:31:16,518 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:31:16,519 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:31:16,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:31:16,523 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:31:16,531 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:31:16,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:31:16,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:31:16,538 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:31:16,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:31:16,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:31:16,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:31:16,552 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:31:16,557 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:31:16,559 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:31:16,559 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:31:16,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:31:16,563 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:31:16,565 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:31:16,566 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:31:16,569 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:31:16,569 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:31:16,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:31:16,572 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:31:16,572 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:31:16,573 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:31:16,574 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:31:16,574 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 07:31:16,597 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:31:16,597 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:31:16,599 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:31:16,599 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:31:16,600 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:31:16,600 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:31:16,600 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:31:16,600 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 07:31:16,601 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:31:16,601 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:31:16,601 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:31:16,601 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:31:16,601 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:31:16,602 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:31:16,603 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:31:16,603 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:31:16,604 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:31:16,604 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:31:16,604 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:31:16,604 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:31:16,604 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:31:16,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:31:16,606 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:31:16,606 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:31:16,606 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:31:16,606 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 07:31:16,606 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:31:16,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 07:31:16,607 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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-01-12 07:31:16,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:31:16,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:31:16,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:31:16,676 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:31:16,677 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:31:16,678 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2019-01-12 07:31:16,744 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2bfdc65/303bdaae8bb04c2eb4a99fb43d84c9b1/FLAG29ffe4d0c [2019-01-12 07:31:17,182 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:31:17,183 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2019-01-12 07:31:17,191 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2bfdc65/303bdaae8bb04c2eb4a99fb43d84c9b1/FLAG29ffe4d0c [2019-01-12 07:31:17,569 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2bfdc65/303bdaae8bb04c2eb4a99fb43d84c9b1 [2019-01-12 07:31:17,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:31:17,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:31:17,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:17,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:31:17,582 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:31:17,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453f9d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17, skipping insertion in model container [2019-01-12 07:31:17,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:31:17,616 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:31:17,849 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:17,855 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:31:17,874 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:17,889 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:31:17,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17 WrapperNode [2019-01-12 07:31:17,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:17,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:17,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:31:17,890 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:31:17,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:17,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:31:17,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:31:17,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:31:17,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (1/1) ... [2019-01-12 07:31:17,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:31:17,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:31:17,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:31:17,951 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:31:17,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (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 07:31:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:31:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:31:18,242 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:31:18,243 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:31:18,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:18 BoogieIcfgContainer [2019-01-12 07:31:18,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:31:18,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:31:18,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:31:18,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:31:18,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:31:17" (1/3) ... [2019-01-12 07:31:18,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d536c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:18, skipping insertion in model container [2019-01-12 07:31:18,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:17" (2/3) ... [2019-01-12 07:31:18,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d536c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:18, skipping insertion in model container [2019-01-12 07:31:18,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:18" (3/3) ... [2019-01-12 07:31:18,254 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2019-01-12 07:31:18,265 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:31:18,272 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 07:31:18,287 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 07:31:18,321 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:31:18,322 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:31:18,322 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:31:18,322 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:31:18,322 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:31:18,322 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:31:18,323 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:31:18,323 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:31:18,323 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:31:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-01-12 07:31:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-12 07:31:18,348 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:31:18,349 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-12 07:31:18,352 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:31:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:31:18,358 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-01-12 07:31:18,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 07:31:18,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 07:31:18,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:31:18,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:31:18,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:31:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:31:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:31:18,465 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 07:31:18,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:31:18 BoogieIcfgContainer [2019-01-12 07:31:18,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:31:18,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:31:18,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:31:18,484 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:31:18,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:18" (3/4) ... [2019-01-12 07:31:18,488 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 07:31:18,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:31:18,489 INFO L168 Benchmark]: Toolchain (without parser) took 915.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:31:18,492 INFO L168 Benchmark]: CDTParser took 0.15 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 07:31:18,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.86 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 07:31:18,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.93 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 07:31:18,495 INFO L168 Benchmark]: Boogie Preprocessor took 22.52 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 07:31:18,495 INFO L168 Benchmark]: RCFGBuilder took 294.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-12 07:31:18,498 INFO L168 Benchmark]: TraceAbstraction took 237.33 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-12 07:31:18,499 INFO L168 Benchmark]: Witness Printer took 5.01 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 07:31:18,507 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 313.86 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 36.93 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 22.52 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 294.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 237.33 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.01 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. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-0ed9222-m [2019-01-12 07:31:20,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:31:20,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:31:20,846 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:31:20,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:31:20,848 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:31:20,849 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:31:20,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:31:20,854 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:31:20,855 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:31:20,855 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:31:20,856 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:31:20,857 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:31:20,858 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:31:20,860 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:31:20,861 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:31:20,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:31:20,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:31:20,867 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:31:20,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:31:20,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:31:20,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:31:20,874 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:31:20,874 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:31:20,875 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:31:20,876 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:31:20,877 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:31:20,878 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:31:20,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:31:20,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:31:20,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:31:20,890 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:31:20,890 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:31:20,890 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:31:20,891 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:31:20,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:31:20,894 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 07:31:20,926 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:31:20,926 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:31:20,928 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:31:20,929 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:31:20,929 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:31:20,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:31:20,929 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:31:20,930 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:31:20,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:31:20,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:31:20,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:31:20,930 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:31:20,931 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 07:31:20,932 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 07:31:20,933 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:31:20,933 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:31:20,933 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:31:20,933 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:31:20,933 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:31:20,934 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:31:20,936 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:31:20,936 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:31:20,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:31:20,936 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:31:20,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:31:20,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:31:20,937 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 07:31:20,937 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:31:20,938 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 07:31:20,938 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 07:31:20,938 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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-01-12 07:31:21,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:31:21,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:31:21,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:31:21,026 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:31:21,027 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:31:21,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2019-01-12 07:31:21,099 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11135f899/6104c3af98a247bba188b369911f26b4/FLAG7d741612e [2019-01-12 07:31:21,500 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:31:21,501 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2019-01-12 07:31:21,506 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11135f899/6104c3af98a247bba188b369911f26b4/FLAG7d741612e [2019-01-12 07:31:21,891 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11135f899/6104c3af98a247bba188b369911f26b4 [2019-01-12 07:31:21,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:31:21,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:31:21,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:21,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:31:21,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:31:21,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:21" (1/1) ... [2019-01-12 07:31:21,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eab8d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:21, skipping insertion in model container [2019-01-12 07:31:21,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:31:21" (1/1) ... [2019-01-12 07:31:21,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:31:21,933 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:31:22,101 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:22,111 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:31:22,130 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:31:22,144 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:31:22,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22 WrapperNode [2019-01-12 07:31:22,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:31:22,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:22,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:31:22,146 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:31:22,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:31:22,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:31:22,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:31:22,176 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:31:22,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (1/1) ... [2019-01-12 07:31:22,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:31:22,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:31:22,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:31:22,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:31:22,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (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 07:31:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:31:22,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:31:24,539 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:31:24,539 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:31:24,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:24 BoogieIcfgContainer [2019-01-12 07:31:24,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:31:24,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:31:24,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:31:24,545 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:31:24,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:31:21" (1/3) ... [2019-01-12 07:31:24,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff43687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:24, skipping insertion in model container [2019-01-12 07:31:24,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:31:22" (2/3) ... [2019-01-12 07:31:24,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff43687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:31:24, skipping insertion in model container [2019-01-12 07:31:24,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:24" (3/3) ... [2019-01-12 07:31:24,549 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2019-01-12 07:31:24,559 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:31:24,566 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 07:31:24,579 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 07:31:24,610 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:31:24,611 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:31:24,611 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:31:24,611 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:31:24,612 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:31:24,612 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:31:24,612 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:31:24,612 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:31:24,612 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:31:24,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-12 07:31:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-12 07:31:24,633 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:31:24,634 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-12 07:31:24,636 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:31:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:31:24,643 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-01-12 07:31:24,647 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:31:24,648 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 07:31:24,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:32:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:33:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:33:01,500 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 07:33:01,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:33:01 BoogieIcfgContainer [2019-01-12 07:33:01,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:33:01,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:33:01,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:33:01,521 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:33:01,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:31:24" (3/4) ... [2019-01-12 07:33:01,523 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 07:33:01,562 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 07:33:01,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:33:01,563 INFO L168 Benchmark]: Toolchain (without parser) took 99668.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -160.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:33:01,565 INFO L168 Benchmark]: CDTParser took 0.17 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 07:33:01,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.26 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 07:33:01,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:33:01,568 INFO L168 Benchmark]: Boogie Preprocessor took 26.19 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 07:33:01,569 INFO L168 Benchmark]: RCFGBuilder took 2338.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-01-12 07:33:01,570 INFO L168 Benchmark]: TraceAbstraction took 96978.40 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-01-12 07:33:01,571 INFO L168 Benchmark]: Witness Printer took 41.96 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 07:33:01,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.26 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 30.04 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.19 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2338.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 96978.40 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Witness Printer took 41.96 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 < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. UNSAFE Result, 96.9s 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, 44.8s 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...