./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/floats-cbmc-regression/float2_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 0572227f16868054f9308a9d75f98d2abad6a63b ..................................................................................................................................................................................................................... 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-cbmc-regression/float2_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 0572227f16868054f9308a9d75f98d2abad6a63b ............................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 07:56:08,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:56:08,535 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:56:08,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:56:08,551 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:56:08,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:56:08,556 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:56:08,559 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:56:08,562 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:56:08,564 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:56:08,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:56:08,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:56:08,568 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:56:08,569 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:56:08,570 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:56:08,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:56:08,573 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:56:08,575 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:56:08,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:56:08,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:56:08,588 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:56:08,589 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:56:08,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:56:08,599 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:56:08,599 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:56:08,600 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:56:08,601 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:56:08,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:56:08,606 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:56:08,608 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:56:08,608 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:56:08,609 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:56:08,609 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:56:08,609 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:56:08,610 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:56:08,611 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:56:08,611 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 07:56:08,627 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:56:08,627 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:56:08,628 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:56:08,629 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:56:08,629 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:56:08,629 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:56:08,629 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:56:08,629 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 07:56:08,630 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:56:08,631 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:56:08,631 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:56:08,631 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:56:08,631 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:56:08,631 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:56:08,631 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:56:08,632 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:56:08,632 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:56:08,632 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:56:08,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:56:08,632 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:56:08,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:56:08,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:56:08,634 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:56:08,635 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:56:08,635 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:56:08,635 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 07:56:08,635 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:56:08,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 07:56:08,636 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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2019-01-12 07:56:08,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:56:08,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:56:08,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:56:08,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:56:08,699 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:56:08,700 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2019-01-12 07:56:08,768 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920d078cc/9bf9a3d6f464410d958d754ce9b507a5/FLAG332e33fd7 [2019-01-12 07:56:09,172 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:56:09,174 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2019-01-12 07:56:09,180 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920d078cc/9bf9a3d6f464410d958d754ce9b507a5/FLAG332e33fd7 [2019-01-12 07:56:09,547 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920d078cc/9bf9a3d6f464410d958d754ce9b507a5 [2019-01-12 07:56:09,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:56:09,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:56:09,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:09,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:56:09,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:56:09,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be4eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09, skipping insertion in model container [2019-01-12 07:56:09,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:56:09,586 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:56:09,756 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:09,765 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:56:09,784 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:09,804 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:56:09,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09 WrapperNode [2019-01-12 07:56:09,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:09,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:09,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:56:09,808 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:56:09,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:09,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:56:09,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:56:09,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:56:09,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... [2019-01-12 07:56:09,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:56:09,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:56:09,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:56:09,887 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:56:09,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:56:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:56:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:56:10,271 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:56:10,271 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:56:10,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:10 BoogieIcfgContainer [2019-01-12 07:56:10,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:56:10,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:56:10,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:56:10,278 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:56:10,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:56:09" (1/3) ... [2019-01-12 07:56:10,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081df8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:10, skipping insertion in model container [2019-01-12 07:56:10,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:09" (2/3) ... [2019-01-12 07:56:10,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081df8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:10, skipping insertion in model container [2019-01-12 07:56:10,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:10" (3/3) ... [2019-01-12 07:56:10,283 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2019-01-12 07:56:10,295 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:56:10,306 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-12 07:56:10,332 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-12 07:56:10,368 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:56:10,369 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:56:10,369 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:56:10,369 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:56:10,369 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:56:10,369 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:56:10,369 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:56:10,369 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:56:10,370 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:56:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-01-12 07:56:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-12 07:56:10,408 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:10,409 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-12 07:56:10,415 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-01-12 07:56:10,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 07:56:10,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 07:56:10,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:56:10,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:10,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:56:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:56:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:56:10,512 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 07:56:10,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:56:10 BoogieIcfgContainer [2019-01-12 07:56:10,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:56:10,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:56:10,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:56:10,526 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:56:10,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:10" (3/4) ... [2019-01-12 07:56:10,531 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 07:56:10,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:56:10,532 INFO L168 Benchmark]: Toolchain (without parser) took 980.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:10,534 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:10,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.26 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:10,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.15 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:10,537 INFO L168 Benchmark]: Boogie Preprocessor took 31.98 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:10,537 INFO L168 Benchmark]: RCFGBuilder took 386.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:10,539 INFO L168 Benchmark]: TraceAbstraction took 251.50 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:10,539 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:10,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 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 254.26 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 46.15 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 31.98 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 386.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 251.50 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.91 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: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10. Possible FailurePath: [L5] float a; [L6] double b; [L9] a=1.25L [L10] COND TRUE !(a==1.25) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-0ed9222-m [2019-01-12 07:56:12,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:56:12,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:56:12,902 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:56:12,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:56:12,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:56:12,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:56:12,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:56:12,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:56:12,910 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:56:12,911 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:56:12,911 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:56:12,912 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:56:12,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:56:12,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:56:12,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:56:12,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:56:12,917 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:56:12,920 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:56:12,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:56:12,922 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:56:12,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:56:12,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:56:12,926 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:56:12,927 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:56:12,928 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:56:12,929 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:56:12,929 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:56:12,930 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:56:12,931 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:56:12,932 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:56:12,933 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:56:12,933 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:56:12,933 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:56:12,934 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:56:12,935 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:56:12,936 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 07:56:12,951 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:56:12,951 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:56:12,953 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:56:12,953 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:56:12,953 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:56:12,953 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:56:12,954 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:56:12,954 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:56:12,954 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:56:12,954 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:56:12,954 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:56:12,954 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:56:12,955 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 07:56:12,955 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 07:56:12,955 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:56:12,955 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:56:12,955 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:56:12,956 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:56:12,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:56:12,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:56:12,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:56:12,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:56:12,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:56:12,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:56:12,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:56:12,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:56:12,957 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 07:56:12,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:56:12,958 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 07:56:12,958 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 07:56:12,958 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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2019-01-12 07:56:12,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:56:13,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:56:13,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:56:13,011 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:56:13,011 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:56:13,012 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2019-01-12 07:56:13,068 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d4d1bd0/03ce11c5926a4d8e9993015e59cfae50/FLAG785f6a4cf [2019-01-12 07:56:13,519 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:56:13,520 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2019-01-12 07:56:13,527 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d4d1bd0/03ce11c5926a4d8e9993015e59cfae50/FLAG785f6a4cf [2019-01-12 07:56:13,898 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d4d1bd0/03ce11c5926a4d8e9993015e59cfae50 [2019-01-12 07:56:13,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:56:13,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:56:13,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:13,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:56:13,909 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:56:13,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:13" (1/1) ... [2019-01-12 07:56:13,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd7db10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:13, skipping insertion in model container [2019-01-12 07:56:13,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:13" (1/1) ... [2019-01-12 07:56:13,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:56:13,940 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:56:14,132 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:14,142 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:56:14,162 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:14,183 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:56:14,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14 WrapperNode [2019-01-12 07:56:14,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:14,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:14,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:56:14,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:56:14,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:14,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:56:14,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:56:14,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:56:14,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... [2019-01-12 07:56:14,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:56:14,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:56:14,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:56:14,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:56:14,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:56:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:56:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:56:14,789 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:56:14,790 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:56:14,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:14 BoogieIcfgContainer [2019-01-12 07:56:14,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:56:14,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:56:14,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:56:14,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:56:14,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:56:13" (1/3) ... [2019-01-12 07:56:14,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646ffa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:14, skipping insertion in model container [2019-01-12 07:56:14,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:14" (2/3) ... [2019-01-12 07:56:14,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646ffa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:14, skipping insertion in model container [2019-01-12 07:56:14,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:14" (3/3) ... [2019-01-12 07:56:14,805 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2019-01-12 07:56:14,819 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:56:14,827 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-12 07:56:14,847 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-12 07:56:14,885 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:56:14,886 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:56:14,886 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:56:14,886 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:56:14,887 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:56:14,887 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:56:14,887 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:56:14,887 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:56:14,887 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:56:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-01-12 07:56:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-12 07:56:14,910 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:14,911 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-12 07:56:14,913 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-01-12 07:56:14,923 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:56:14,924 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-01-12 07:56:14,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 07:56:14,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 07:56:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 07:56:15,031 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 07:56:15,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 07:56:15,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 07:56:15,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 07:56:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 07:56:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,059 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-01-12 07:56:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 07:56:15,157 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-01-12 07:56:15,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 07:56:15,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-12 07:56:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 07:56:15,168 INFO L225 Difference]: With dead ends: 35 [2019-01-12 07:56:15,168 INFO L226 Difference]: Without dead ends: 15 [2019-01-12 07:56:15,171 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-01-12 07:56:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-01-12 07:56:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-01-12 07:56:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-01-12 07:56:15,200 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2019-01-12 07:56:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 07:56:15,201 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-01-12 07:56:15,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 07:56:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-01-12 07:56:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 07:56:15,202 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:15,202 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 07:56:15,202 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:15,203 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-01-12 07:56:15,203 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:56:15,203 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-01-12 07:56:15,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 07:56:15,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 07:56:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 07:56:15,249 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 07:56:15,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 07:56:15,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 07:56:15,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 07:56:15,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 07:56:15,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,263 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2019-01-12 07:56:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 07:56:15,287 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-01-12 07:56:15,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 07:56:15,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-01-12 07:56:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 07:56:15,289 INFO L225 Difference]: With dead ends: 15 [2019-01-12 07:56:15,289 INFO L226 Difference]: Without dead ends: 13 [2019-01-12 07:56:15,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-01-12 07:56:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-01-12 07:56:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-01-12 07:56:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-01-12 07:56:15,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2019-01-12 07:56:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 07:56:15,295 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-01-12 07:56:15,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 07:56:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-01-12 07:56:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-12 07:56:15,296 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:15,297 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 07:56:15,297 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:15,297 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-01-12 07:56:15,298 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:56:15,298 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-01-12 07:56:15,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 07:56:15,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 07:56:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 07:56:15,356 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 07:56:15,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 07:56:15,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 07:56:15,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 07:56:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 07:56:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,367 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2019-01-12 07:56:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 07:56:15,582 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-01-12 07:56:15,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 07:56:15,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-01-12 07:56:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 07:56:15,583 INFO L225 Difference]: With dead ends: 13 [2019-01-12 07:56:15,583 INFO L226 Difference]: Without dead ends: 11 [2019-01-12 07:56:15,584 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-01-12 07:56:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-01-12 07:56:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-12 07:56:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-01-12 07:56:15,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2019-01-12 07:56:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 07:56:15,587 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-01-12 07:56:15,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 07:56:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-01-12 07:56:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 07:56:15,588 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:15,588 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 07:56:15,589 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:15,589 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2019-01-12 07:56:15,590 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:56:15,590 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-01-12 07:56:15,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 07:56:15,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 07:56:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 07:56:15,652 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 07:56:15,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 07:56:15,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 07:56:15,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 07:56:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 07:56:15,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,663 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2019-01-12 07:56:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 07:56:15,833 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-01-12 07:56:15,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 07:56:15,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-01-12 07:56:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 07:56:15,835 INFO L225 Difference]: With dead ends: 11 [2019-01-12 07:56:15,835 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 07:56:15,835 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 07:56:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 07:56:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 07:56:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 07:56:15,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-01-12 07:56:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 07:56:15,836 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 07:56:15,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 07:56:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 07:56:15,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 07:56:15,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 07:56:15,844 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 07:56:15,844 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-01-12 07:56:15,844 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-01-12 07:56:15,845 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 22) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-01-12 07:56:15,846 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-01-12 07:56:15,847 INFO L448 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2019-01-12 07:56:15,847 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-01-12 07:56:15,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:56:15 BoogieIcfgContainer [2019-01-12 07:56:15,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:56:15,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:56:15,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:56:15,851 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:56:15,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:14" (3/4) ... [2019-01-12 07:56:15,855 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 07:56:15,866 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-12 07:56:15,867 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 07:56:15,867 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-12 07:56:15,911 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 07:56:15,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:56:15,912 INFO L168 Benchmark]: Toolchain (without parser) took 2009.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -88.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:15,915 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:15,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.68 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. [2019-01-12 07:56:15,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.10 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. [2019-01-12 07:56:15,917 INFO L168 Benchmark]: Boogie Preprocessor took 30.74 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. [2019-01-12 07:56:15,917 INFO L168 Benchmark]: RCFGBuilder took 537.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:15,918 INFO L168 Benchmark]: TraceAbstraction took 1056.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:15,918 INFO L168 Benchmark]: Witness Printer took 61.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:15,922 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 278.68 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 39.10 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 30.74 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. * RCFGBuilder took 537.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1056.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. SAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 14 SDslu, 14 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 298 SizeOfPredicates, 4 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...