/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-cdfpl/square_3_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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 ../../../trunk/examples/svcomp/floats-cdfpl/square_3_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 57828c11c74ba018eaf70a217208a01187285749 ................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/floats-cdfpl/square_3_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 57828c11c74ba018eaf70a217208a01187285749 ....................................................................................................................................................................................................................... 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 0.1.23-40ef509 [2018-09-20 13:26:07,862 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:26:07,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:26:07,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:26:07,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:26:07,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:26:07,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:26:07,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:26:07,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:26:07,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:26:07,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:26:07,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:26:07,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:26:07,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:26:07,899 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:26:07,901 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:26:07,903 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:26:07,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:26:07,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:26:07,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:26:07,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:26:07,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:26:07,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:26:07,928 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:26:07,928 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:26:07,930 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:26:07,932 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:26:07,933 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:26:07,934 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:26:07,935 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:26:07,935 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:26:07,937 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:26:07,938 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:26:07,938 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:26:07,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:26:07,942 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:26:07,942 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:26:07,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:26:07,964 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:26:07,964 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:26:07,965 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:26:07,966 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:26:07,966 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:26:07,966 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:26:07,967 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:26:07,967 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:26:07,967 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:26:07,967 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:26:07,967 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:26:07,968 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:26:07,968 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:26:07,968 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:26:07,968 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:26:07,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:26:07,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:26:07,970 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:26:07,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:26:07,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:26:07,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:26:07,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:26:07,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:26:07,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:26:07,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:26:07,973 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:26:07,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:26:07,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:26:07,973 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 -> 57828c11c74ba018eaf70a217208a01187285749 [2018-09-20 13:26:08,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:26:08,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:26:08,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:26:08,044 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:26:08,044 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:26:08,045 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-09-20 13:26:08,388 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd284d8a/6bb70143eb174e1a8fcdcb7818f0d825/FLAG5d6e24f67 [2018-09-20 13:26:08,581 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:26:08,581 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-09-20 13:26:08,591 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd284d8a/6bb70143eb174e1a8fcdcb7818f0d825/FLAG5d6e24f67 [2018-09-20 13:26:08,620 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd284d8a/6bb70143eb174e1a8fcdcb7818f0d825 [2018-09-20 13:26:08,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:26:08,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:26:08,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:08,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:26:08,644 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:26:08,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfa6ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08, skipping insertion in model container [2018-09-20 13:26:08,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,665 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:26:08,881 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:08,899 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:26:08,906 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:08,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08 WrapperNode [2018-09-20 13:26:08,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:08,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:26:08,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:26:08,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:26:08,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:26:08,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:26:08,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:26:08,955 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:26:08,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (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 [2018-09-20 13:26:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:26:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:26:09,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:26:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:26:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:26:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:26:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:26:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:26:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:26:09,367 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:26:09,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:09 BoogieIcfgContainer [2018-09-20 13:26:09,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:26:09,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:26:09,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:26:09,374 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:26:09,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:08" (1/3) ... [2018-09-20 13:26:09,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6215f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:09, skipping insertion in model container [2018-09-20 13:26:09,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08" (2/3) ... [2018-09-20 13:26:09,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6215f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:09, skipping insertion in model container [2018-09-20 13:26:09,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:09" (3/3) ... [2018-09-20 13:26:09,379 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3_false-unreach-call_true-termination.i [2018-09-20 13:26:09,392 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:26:09,401 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:26:09,471 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:26:09,472 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:26:09,472 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:26:09,472 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:26:09,472 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:26:09,473 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:26:09,473 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:26:09,473 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:26:09,473 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:26:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:26:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:26:09,509 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:26:09,510 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:26:09,515 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:26:09,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-09-20 13:26:09,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:26:09,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:26:09,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:26:09,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:26:09,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:26:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:26:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:26:09,634 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:26:09,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:09 BoogieIcfgContainer [2018-09-20 13:26:09,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:26:09,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:26:09,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:26:09,662 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:26:09,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:09" (3/4) ... [2018-09-20 13:26:09,670 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:26:09,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:26:09,672 INFO L168 Benchmark]: Toolchain (without parser) took 1044.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -131.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:09,677 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:09,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.52 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:09,680 INFO L168 Benchmark]: Boogie Preprocessor took 30.09 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:09,681 INFO L168 Benchmark]: RCFGBuilder took 413.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:09,683 INFO L168 Benchmark]: TraceAbstraction took 290.60 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:09,685 INFO L168 Benchmark]: Witness Printer took 10.51 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. [2018-09-20 13:26:09,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.52 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.09 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 413.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 290.60 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * Witness Printer took 10.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 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=13occurred 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, 7 NumberOfCodeBlocks, 7 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 0.1.23-40ef509 [2018-09-20 13:26:12,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:26:12,074 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:26:12,086 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:26:12,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:26:12,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:26:12,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:26:12,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:26:12,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:26:12,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:26:12,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:26:12,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:26:12,096 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:26:12,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:26:12,098 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:26:12,098 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:26:12,099 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:26:12,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:26:12,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:26:12,105 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:26:12,106 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:26:12,107 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:26:12,110 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:26:12,110 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:26:12,110 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:26:12,111 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:26:12,112 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:26:12,113 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:26:12,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:26:12,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:26:12,116 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:26:12,116 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:26:12,117 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:26:12,117 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:26:12,118 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:26:12,119 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:26:12,119 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:26:12,145 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:26:12,146 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:26:12,148 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:26:12,148 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:26:12,149 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:26:12,149 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:26:12,149 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:26:12,150 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:26:12,150 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:26:12,150 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:26:12,150 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:26:12,150 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:26:12,150 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:26:12,151 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:26:12,151 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:26:12,151 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:26:12,151 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:26:12,151 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:26:12,152 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:26:12,153 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:26:12,153 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:26:12,153 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:26:12,153 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:26:12,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:26:12,154 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:26:12,154 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:26:12,154 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:26:12,154 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:26:12,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:26:12,155 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:26:12,155 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:26:12,155 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 -> 57828c11c74ba018eaf70a217208a01187285749 [2018-09-20 13:26:12,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:26:12,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:26:12,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:26:12,258 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:26:12,259 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:26:12,260 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-09-20 13:26:12,599 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362fd5909/0e6838853fae46ccafad32cdc86a4b6a/FLAG404cdd099 [2018-09-20 13:26:12,749 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:26:12,749 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-09-20 13:26:12,755 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362fd5909/0e6838853fae46ccafad32cdc86a4b6a/FLAG404cdd099 [2018-09-20 13:26:12,772 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362fd5909/0e6838853fae46ccafad32cdc86a4b6a [2018-09-20 13:26:12,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:26:12,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:26:12,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:12,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:26:12,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:26:12,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:12" (1/1) ... [2018-09-20 13:26:12,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af70ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:12, skipping insertion in model container [2018-09-20 13:26:12,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:12" (1/1) ... [2018-09-20 13:26:12,804 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:26:13,066 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:13,094 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:26:13,107 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:13,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13 WrapperNode [2018-09-20 13:26:13,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:13,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:26:13,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:26:13,128 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:26:13,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:26:13,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:26:13,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:26:13,179 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:26:13,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:26:13,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:26:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:26:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:26:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:26:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:26:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:26:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:26:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:26:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:26:15,547 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:26:15,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:15 BoogieIcfgContainer [2018-09-20 13:26:15,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:26:15,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:26:15,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:26:15,561 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:26:15,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:12" (1/3) ... [2018-09-20 13:26:15,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e435357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:15, skipping insertion in model container [2018-09-20 13:26:15,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (2/3) ... [2018-09-20 13:26:15,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e435357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:15, skipping insertion in model container [2018-09-20 13:26:15,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:15" (3/3) ... [2018-09-20 13:26:15,568 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3_false-unreach-call_true-termination.i [2018-09-20 13:26:15,581 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:26:15,594 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:26:15,664 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:26:15,665 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:26:15,665 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:26:15,666 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:26:15,666 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:26:15,666 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:26:15,667 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:26:15,667 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:26:15,667 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:26:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:26:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:26:15,711 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:26:15,713 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:26:15,719 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:26:15,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-09-20 13:26:15,734 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:26:15,735 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 [2018-09-20 13:26:15,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:33:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:39:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:39:02,951 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:39:02,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:39:02 BoogieIcfgContainer [2018-09-20 13:39:02,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:39:02,978 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:39:02,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:39:02,979 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:39:02,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:15" (3/4) ... [2018-09-20 13:39:02,982 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-20 13:39:03,025 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:39:03,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:39:03,027 INFO L168 Benchmark]: Toolchain (without parser) took 770249.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 951.9 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:39:03,029 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:39:03,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.20 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:39:03,031 INFO L168 Benchmark]: Boogie Preprocessor took 50.73 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:39:03,032 INFO L168 Benchmark]: RCFGBuilder took 2375.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-09-20 13:39:03,033 INFO L168 Benchmark]: TraceAbstraction took 767422.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2018-09-20 13:39:03,034 INFO L168 Benchmark]: Witness Printer took 47.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:39:03,038 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.20 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.73 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2375.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -128.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 767422.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 47.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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; VAL [IN=0.9999997019767761, result=1.3984375, x=0.9999997019767761] [L14] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999997019767761, result=1.3984375, x=0.9999997019767761] [L15] __VERIFIER_error() VAL [IN=0.9999997019767761, result=1.3984375, x=0.9999997019767761] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 767.3s 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=13occurred 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, 409.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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...