/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3_true-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-cbmc-regression/float-no-simp3_true-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 4e4f711715c9ba9b74051d365fc69961816436d0 ............................................................................................................................................................................................................. 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-cbmc-regression/float-no-simp3_true-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 4e4f711715c9ba9b74051d365fc69961816436d0 ....................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 13:45:25,696 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:45:25,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:45:25,722 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:45:25,723 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:45:25,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:45:25,727 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:45:25,730 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:45:25,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:45:25,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:45:25,739 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:45:25,740 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:45:25,741 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:45:25,744 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:45:25,751 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:45:25,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:45:25,756 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:45:25,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:45:25,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:45:25,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:45:25,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:45:25,772 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:45:25,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:45:25,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:45:25,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:45:25,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:45:25,782 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:45:25,783 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:45:25,787 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:45:25,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:45:25,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:45:25,789 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:45:25,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:45:25,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:45:25,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:45:25,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:45:25,792 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:45:25,808 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:45:25,808 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:45:25,809 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:45:25,809 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:45:25,810 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:45:25,810 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:45:25,810 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:45:25,811 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:45:25,811 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:45:25,812 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:45:25,812 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:45:25,812 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:45:25,812 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:45:25,812 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:45:25,812 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:45:25,813 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:45:25,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:45:25,813 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:45:25,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:45:25,815 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:45:25,815 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:45:25,815 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:45:25,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:45:25,815 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:45:25,816 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:45:25,816 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:45:25,816 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:45:25,816 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:45:25,817 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:45:25,818 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 -> 4e4f711715c9ba9b74051d365fc69961816436d0 [2018-09-20 13:45:25,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:45:25,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:45:25,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:45:25,906 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:45:25,906 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:45:25,907 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3_true-unreach-call_true-termination.i [2018-09-20 13:45:26,280 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83913f3d/a78665c7bc7a4434b606649e745f10b1/FLAGa523d8941 [2018-09-20 13:45:26,418 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:45:26,419 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3_true-unreach-call_true-termination.i [2018-09-20 13:45:26,427 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83913f3d/a78665c7bc7a4434b606649e745f10b1/FLAGa523d8941 [2018-09-20 13:45:26,446 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83913f3d/a78665c7bc7a4434b606649e745f10b1 [2018-09-20 13:45:26,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:45:26,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:45:26,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:45:26,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:45:26,465 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:45:26,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4189a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26, skipping insertion in model container [2018-09-20 13:45:26,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,483 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:45:26,738 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:45:26,762 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:45:26,766 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:45:26,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26 WrapperNode [2018-09-20 13:45:26,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:45:26,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:45:26,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:45:26,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:45:26,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (1/1) ... [2018-09-20 13:45:26,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:45:26,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:45:26,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:45:26,820 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:45:26,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (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 13:45:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:45:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:45:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:45:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:45:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:45:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:45:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:45:27,293 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:45:27,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:45:27 BoogieIcfgContainer [2018-09-20 13:45:27,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:45:27,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:45:27,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:45:27,300 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:45:27,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:45:26" (1/3) ... [2018-09-20 13:45:27,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6417fb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:45:27, skipping insertion in model container [2018-09-20 13:45:27,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:26" (2/3) ... [2018-09-20 13:45:27,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6417fb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:45:27, skipping insertion in model container [2018-09-20 13:45:27,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:45:27" (3/3) ... [2018-09-20 13:45:27,307 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp3_true-unreach-call_true-termination.i [2018-09-20 13:45:27,320 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:45:27,333 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:45:27,389 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:45:27,390 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:45:27,390 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:45:27,391 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:45:27,391 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:45:27,391 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:45:27,391 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:45:27,391 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:45:27,391 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:45:27,408 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-20 13:45:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:45:27,415 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:45:27,416 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:45:27,418 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:45:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1297293521, now seen corresponding path program 1 times [2018-09-20 13:45:27,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:45:27,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:45:27,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:45:27,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:45:27,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:45:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:45:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:45:27,538 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:45:27,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:45:27 BoogieIcfgContainer [2018-09-20 13:45:27,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:45:27,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:45:27,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:45:27,556 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:45:27,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:45:27" (3/4) ... [2018-09-20 13:45:27,561 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:45:27,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:45:27,562 INFO L168 Benchmark]: Toolchain (without parser) took 1109.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:45:27,565 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 13:45:27,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.94 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 13:45:27,567 INFO L168 Benchmark]: Boogie Preprocessor took 37.70 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 13:45:27,568 INFO L168 Benchmark]: RCFGBuilder took 474.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:27,569 INFO L168 Benchmark]: TraceAbstraction took 259.60 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: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:27,570 INFO L168 Benchmark]: Witness Printer took 5.97 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. [2018-09-20 13:45:27,575 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 323.94 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 37.70 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 474.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 259.60 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: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticFLOAToperation at line 6. Possible FailurePath: [L6] float fs1=2.0f/6.0f; [L7] float fs2=fs1*6.0f; [L8] COND TRUE !((int)fs2==2) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 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=12occurred 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 13:45:29,920 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:45:29,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:45:29,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:45:29,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:45:29,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:45:29,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:45:29,940 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:45:29,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:45:29,943 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:45:29,944 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:45:29,944 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:45:29,945 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:45:29,949 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:45:29,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:45:29,953 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:45:29,954 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:45:29,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:45:29,961 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:45:29,962 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:45:29,963 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:45:29,965 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:45:29,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:45:29,974 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:45:29,975 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:45:29,976 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:45:29,977 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:45:29,978 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:45:29,980 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:45:29,984 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:45:29,986 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:45:29,987 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:45:29,987 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:45:29,987 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:45:29,989 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:45:29,992 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:45:29,993 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:45:30,018 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:45:30,019 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:45:30,020 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:45:30,021 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:45:30,021 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:45:30,023 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:45:30,023 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:45:30,024 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:45:30,024 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:45:30,024 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:45:30,025 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:45:30,025 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:45:30,025 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:45:30,026 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:45:30,026 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:45:30,026 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:45:30,026 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:45:30,028 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:45:30,028 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:45:30,029 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:45:30,029 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:45:30,029 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:45:30,030 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:45:30,030 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:45:30,030 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:45:30,030 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:45:30,031 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:45:30,031 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:45:30,031 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:45:30,031 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:45:30,032 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:45:30,032 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 -> 4e4f711715c9ba9b74051d365fc69961816436d0 [2018-09-20 13:45:30,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:45:30,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:45:30,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:45:30,138 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:45:30,139 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:45:30,140 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3_true-unreach-call_true-termination.i [2018-09-20 13:45:30,498 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43025341a/21af631a0c8743dfb96c7300dc5c5f19/FLAGb0c707066 [2018-09-20 13:45:30,661 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:45:30,662 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3_true-unreach-call_true-termination.i [2018-09-20 13:45:30,669 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43025341a/21af631a0c8743dfb96c7300dc5c5f19/FLAGb0c707066 [2018-09-20 13:45:30,699 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43025341a/21af631a0c8743dfb96c7300dc5c5f19 [2018-09-20 13:45:30,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:45:30,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:45:30,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:45:30,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:45:30,726 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:45:30,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:45:30" (1/1) ... [2018-09-20 13:45:30,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fac048c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:30, skipping insertion in model container [2018-09-20 13:45:30,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:45:30" (1/1) ... [2018-09-20 13:45:30,743 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:45:30,984 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:45:31,016 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:45:31,020 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:45:31,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31 WrapperNode [2018-09-20 13:45:31,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:45:31,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:45:31,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:45:31,042 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:45:31,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (1/1) ... [2018-09-20 13:45:31,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:45:31,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:45:31,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:45:31,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:45:31,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (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 13:45:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:45:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:45:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:45:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:45:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:45:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:45:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:45:31,519 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:45:31,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:45:31 BoogieIcfgContainer [2018-09-20 13:45:31,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:45:31,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:45:31,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:45:31,525 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:45:31,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:45:30" (1/3) ... [2018-09-20 13:45:31,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191d8b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:45:31, skipping insertion in model container [2018-09-20 13:45:31,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:45:31" (2/3) ... [2018-09-20 13:45:31,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191d8b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:45:31, skipping insertion in model container [2018-09-20 13:45:31,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:45:31" (3/3) ... [2018-09-20 13:45:31,530 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp3_true-unreach-call_true-termination.i [2018-09-20 13:45:31,541 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:45:31,550 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:45:31,597 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:45:31,598 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:45:31,598 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:45:31,598 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:45:31,599 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:45:31,599 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:45:31,599 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:45:31,599 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:45:31,599 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:45:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-20 13:45:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:45:31,626 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:45:31,627 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:45:31,629 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:45:31,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1297293521, now seen corresponding path program 1 times [2018-09-20 13:45:31,642 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:45:31,642 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 13:45:31,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:45:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:45:31,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:45:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 13:45:31,820 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:45:31,841 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:45:31,842 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 13:45:31,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 13:45:31,876 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 13:45:31,877 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 13:45:31,881 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-09-20 13:45:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:45:31,931 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-09-20 13:45:31,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 13:45:31,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-20 13:45:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:45:31,947 INFO L225 Difference]: With dead ends: 16 [2018-09-20 13:45:31,948 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 13:45:31,952 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 13:45:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 13:45:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 13:45:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 13:45:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 13:45:31,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-09-20 13:45:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:45:31,996 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 13:45:31,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 13:45:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 13:45:31,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 13:45:32,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 13:45:32,062 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-20 13:45:32,062 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:45:32,063 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:45:32,063 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 13:45:32,063 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 13:45:32,064 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 13:45:32,064 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2018-09-20 13:45:32,064 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 3 9) the Hoare annotation is: true [2018-09-20 13:45:32,064 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 3 9) no Hoare annotation was computed. [2018-09-20 13:45:32,069 INFO L426 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-09-20 13:45:32,069 INFO L426 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2018-09-20 13:45:32,069 INFO L426 ceAbstractionStarter]: For program point L8-3(lines 3 9) no Hoare annotation was computed. [2018-09-20 13:45:32,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:45:32 BoogieIcfgContainer [2018-09-20 13:45:32,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:45:32,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:45:32,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:45:32,077 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:45:32,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:45:31" (3/4) ... [2018-09-20 13:45:32,085 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 13:45:32,097 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 13:45:32,098 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 13:45:32,105 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-20 13:45:32,105 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-20 13:45:32,106 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 13:45:32,147 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:45:32,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:45:32,148 INFO L168 Benchmark]: Toolchain (without parser) took 1440.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:45:32,150 INFO L168 Benchmark]: CDTParser took 0.19 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 13:45:32,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:32,153 INFO L168 Benchmark]: Boogie Preprocessor took 37.50 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:45:32,153 INFO L168 Benchmark]: RCFGBuilder took 434.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -204.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:32,154 INFO L168 Benchmark]: TraceAbstraction took 555.55 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:32,155 INFO L168 Benchmark]: Witness Printer took 70.07 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. [2018-09-20 13:45:32,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 323.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.50 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 434.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -204.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 555.55 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * Witness Printer took 70.07 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: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 2 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...