./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 2e94e6aa 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 0.1.24-2e94e6a [2018-12-31 02:22:23,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 02:22:23,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 02:22:23,916 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 02:22:23,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 02:22:23,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 02:22:23,920 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 02:22:23,922 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 02:22:23,924 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 02:22:23,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 02:22:23,926 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 02:22:23,926 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 02:22:23,927 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 02:22:23,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 02:22:23,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 02:22:23,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 02:22:23,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 02:22:23,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 02:22:23,937 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 02:22:23,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 02:22:23,940 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 02:22:23,941 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 02:22:23,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 02:22:23,945 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 02:22:23,945 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 02:22:23,946 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 02:22:23,948 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 02:22:23,948 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 02:22:23,949 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 02:22:23,951 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 02:22:23,951 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 02:22:23,952 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 02:22:23,952 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 02:22:23,952 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 02:22:23,954 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 02:22:23,955 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 02:22:23,955 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 02:22:23,971 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 02:22:23,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 02:22:23,973 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 02:22:23,973 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 02:22:23,973 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 02:22:23,974 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 02:22:23,975 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 02:22:23,975 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 02:22:23,975 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 02:22:23,975 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 02:22:23,975 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 02:22:23,975 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 02:22:23,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 02:22:23,976 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 02:22:23,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 02:22:23,976 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 02:22:23,976 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 02:22:23,976 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 02:22:23,978 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 02:22:23,978 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 02:22:23,978 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 02:22:23,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 02:22:23,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 02:22:23,979 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 02:22:23,979 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 02:22:23,979 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 02:22:23,980 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 02:22:23,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 02:22:23,981 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 [2018-12-31 02:22:24,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 02:22:24,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 02:22:24,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 02:22:24,058 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 02:22:24,058 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 02:22:24,059 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-12-31 02:22:24,128 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17294b28a/e5df859a13ec4ab0b13ab23ae5a0715c/FLAG66b7d5fc7 [2018-12-31 02:22:24,569 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 02:22:24,570 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-12-31 02:22:24,576 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17294b28a/e5df859a13ec4ab0b13ab23ae5a0715c/FLAG66b7d5fc7 [2018-12-31 02:22:24,944 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17294b28a/e5df859a13ec4ab0b13ab23ae5a0715c [2018-12-31 02:22:24,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 02:22:24,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 02:22:24,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 02:22:24,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 02:22:24,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 02:22:24,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 02:22:24" (1/1) ... [2018-12-31 02:22:24,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c637569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:24, skipping insertion in model container [2018-12-31 02:22:24,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 02:22:24" (1/1) ... [2018-12-31 02:22:24,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 02:22:24,994 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 02:22:25,244 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 02:22:25,249 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 02:22:25,274 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 02:22:25,293 INFO L195 MainTranslator]: Completed translation [2018-12-31 02:22:25,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25 WrapperNode [2018-12-31 02:22:25,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 02:22:25,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 02:22:25,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 02:22:25,296 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 02:22:25,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 02:22:25,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 02:22:25,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 02:22:25,337 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 02:22:25,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (1/1) ... [2018-12-31 02:22:25,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 02:22:25,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 02:22:25,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 02:22:25,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 02:22:25,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (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 [2018-12-31 02:22:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 02:22:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 02:22:25,718 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 02:22:25,718 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 02:22:25,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 02:22:25 BoogieIcfgContainer [2018-12-31 02:22:25,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 02:22:25,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 02:22:25,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 02:22:25,724 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 02:22:25,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 02:22:24" (1/3) ... [2018-12-31 02:22:25,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f57928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 02:22:25, skipping insertion in model container [2018-12-31 02:22:25,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:25" (2/3) ... [2018-12-31 02:22:25,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f57928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 02:22:25, skipping insertion in model container [2018-12-31 02:22:25,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 02:22:25" (3/3) ... [2018-12-31 02:22:25,731 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-12-31 02:22:25,743 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 02:22:25,754 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 02:22:25,775 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 02:22:25,820 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 02:22:25,821 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 02:22:25,821 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 02:22:25,821 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 02:22:25,821 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 02:22:25,821 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 02:22:25,821 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 02:22:25,822 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 02:22:25,822 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 02:22:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-12-31 02:22:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-31 02:22:25,855 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 02:22:25,857 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-31 02:22:25,859 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 02:22:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 02:22:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2018-12-31 02:22:25,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 02:22:25,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 02:22:25,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 02:22:25,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 02:22:25,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 02:22:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 02:22:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 02:22:26,003 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 02:22:26,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 02:22:26 BoogieIcfgContainer [2018-12-31 02:22:26,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 02:22:26,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 02:22:26,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 02:22:26,027 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 02:22:26,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 02:22:25" (3/4) ... [2018-12-31 02:22:26,032 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-31 02:22:26,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 02:22:26,033 INFO L168 Benchmark]: Toolchain (without parser) took 1084.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 02:22:26,036 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-31 02:22:26,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.92 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. [2018-12-31 02:22:26,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.13 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. [2018-12-31 02:22:26,041 INFO L168 Benchmark]: Boogie Preprocessor took 23.35 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. [2018-12-31 02:22:26,041 INFO L168 Benchmark]: RCFGBuilder took 358.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-31 02:22:26,043 INFO L168 Benchmark]: TraceAbstraction took 305.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-31 02:22:26,047 INFO L168 Benchmark]: Witness Printer took 7.05 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. [2018-12-31 02:22:26,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 342.92 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 41.13 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 23.35 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 358.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 305.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 7.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-2e94e6a [2018-12-31 02:22:28,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 02:22:28,491 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 02:22:28,511 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 02:22:28,512 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 02:22:28,514 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 02:22:28,516 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 02:22:28,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 02:22:28,520 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 02:22:28,521 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 02:22:28,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 02:22:28,523 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 02:22:28,524 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 02:22:28,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 02:22:28,529 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 02:22:28,530 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 02:22:28,531 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 02:22:28,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 02:22:28,535 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 02:22:28,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 02:22:28,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 02:22:28,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 02:22:28,542 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 02:22:28,542 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 02:22:28,543 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 02:22:28,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 02:22:28,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 02:22:28,546 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 02:22:28,546 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 02:22:28,548 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 02:22:28,548 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 02:22:28,549 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 02:22:28,549 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 02:22:28,549 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 02:22:28,551 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 02:22:28,551 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 02:22:28,552 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-31 02:22:28,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 02:22:28,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 02:22:28,569 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 02:22:28,569 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 02:22:28,569 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 02:22:28,570 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 02:22:28,570 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 02:22:28,570 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 02:22:28,570 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 02:22:28,571 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 02:22:28,571 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 02:22:28,571 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 02:22:28,571 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-31 02:22:28,571 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-31 02:22:28,571 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 02:22:28,572 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 02:22:28,572 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 02:22:28,572 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 02:22:28,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 02:22:28,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 02:22:28,573 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 02:22:28,574 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 02:22:28,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 02:22:28,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 02:22:28,575 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 02:22:28,575 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 02:22:28,575 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-31 02:22:28,575 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 02:22:28,576 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-31 02:22:28,577 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-31 02:22:28,577 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 [2018-12-31 02:22:28,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 02:22:28,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 02:22:28,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 02:22:28,651 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 02:22:28,652 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 02:22:28,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-12-31 02:22:28,732 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ba11773/2df085e3db1f4d4cb5aafb32bbfdf08c/FLAGb6f05b9ff [2018-12-31 02:22:29,207 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 02:22:29,208 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-12-31 02:22:29,216 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ba11773/2df085e3db1f4d4cb5aafb32bbfdf08c/FLAGb6f05b9ff [2018-12-31 02:22:29,556 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ba11773/2df085e3db1f4d4cb5aafb32bbfdf08c [2018-12-31 02:22:29,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 02:22:29,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 02:22:29,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 02:22:29,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 02:22:29,568 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 02:22:29,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bcc5e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29, skipping insertion in model container [2018-12-31 02:22:29,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 02:22:29,600 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 02:22:29,818 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 02:22:29,829 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 02:22:29,855 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 02:22:29,875 INFO L195 MainTranslator]: Completed translation [2018-12-31 02:22:29,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29 WrapperNode [2018-12-31 02:22:29,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 02:22:29,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 02:22:29,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 02:22:29,877 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 02:22:29,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 02:22:29,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 02:22:29,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 02:22:29,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 02:22:29,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (1/1) ... [2018-12-31 02:22:29,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 02:22:29,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 02:22:29,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 02:22:29,973 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 02:22:29,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (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 [2018-12-31 02:22:30,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 02:22:30,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 02:22:32,408 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 02:22:32,408 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 02:22:32,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 02:22:32 BoogieIcfgContainer [2018-12-31 02:22:32,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 02:22:32,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 02:22:32,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 02:22:32,417 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 02:22:32,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 02:22:29" (1/3) ... [2018-12-31 02:22:32,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f15eddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 02:22:32, skipping insertion in model container [2018-12-31 02:22:32,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 02:22:29" (2/3) ... [2018-12-31 02:22:32,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f15eddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 02:22:32, skipping insertion in model container [2018-12-31 02:22:32,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 02:22:32" (3/3) ... [2018-12-31 02:22:32,422 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-12-31 02:22:32,433 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 02:22:32,442 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 02:22:32,456 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 02:22:32,488 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 02:22:32,489 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 02:22:32,489 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 02:22:32,490 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 02:22:32,491 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 02:22:32,491 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 02:22:32,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 02:22:32,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 02:22:32,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 02:22:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-12-31 02:22:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-31 02:22:32,514 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 02:22:32,515 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-31 02:22:32,517 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 02:22:32,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 02:22:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2018-12-31 02:22:32,529 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 02:22:32,530 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 [2018-12-31 02:22:32,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 02:23:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 02:24:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 02:24:43,445 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 02:24:43,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 02:24:43 BoogieIcfgContainer [2018-12-31 02:24:43,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 02:24:43,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 02:24:43,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 02:24:43,495 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 02:24:43,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 02:22:32" (3/4) ... [2018-12-31 02:24:43,499 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 02:24:43,551 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 02:24:43,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 02:24:43,552 INFO L168 Benchmark]: Toolchain (without parser) took 133990.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 02:24:43,556 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. [2018-12-31 02:24:43,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 02:24:43,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 02:24:43,558 INFO L168 Benchmark]: Boogie Preprocessor took 47.84 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 02:24:43,559 INFO L168 Benchmark]: RCFGBuilder took 2438.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-31 02:24:43,560 INFO L168 Benchmark]: TraceAbstraction took 131081.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-31 02:24:43,561 INFO L168 Benchmark]: Witness Printer took 57.17 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. [2018-12-31 02:24:43,570 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 312.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.84 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2438.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 131081.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 57.17 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, 8 locations, 1 error locations. UNSAFE Result, 131.0s 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, 57.9s 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 proved your program to be incorrect! Received shutdown request...