./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer --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 847ec304644081d839ca7e80209d45b391ec9937 .......................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer --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 847ec304644081d839ca7e80209d45b391ec9937 ........................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:17:15,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:17:15,650 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:17:15,659 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:17:15,659 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:17:15,660 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:17:15,661 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:17:15,662 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:17:15,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:17:15,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:17:15,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:17:15,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:17:15,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:17:15,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:17:15,666 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:17:15,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:17:15,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:17:15,668 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:17:15,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:17:15,670 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:17:15,671 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:17:15,671 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:17:15,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:17:15,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:17:15,672 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:17:15,673 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:17:15,673 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:17:15,674 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:17:15,674 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:17:15,675 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:17:15,675 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:17:15,676 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:17:15,676 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:17:15,676 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:17:15,677 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:17:15,678 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:17:15,678 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:17:15,685 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:17:15,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:17:15,686 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:17:15,686 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:17:15,687 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:17:15,687 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:17:15,687 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:17:15,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:17:15,687 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:17:15,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:17:15,688 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:17:15,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:17:15,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:17:15,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:17:15,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:17:15,688 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:17:15,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:17:15,689 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:17:15,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:17:15,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:17:15,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:17:15,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:17:15,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:17:15,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:17:15,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:17:15,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:17:15,690 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:17:15,690 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:17:15,690 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:17:15,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:17:15,690 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer 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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2018-11-28 11:17:15,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:17:15,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:17:15,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:17:15,729 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:17:15,730 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:17:15,730 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-28 11:17:15,776 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/f9c703fd2/ee650873a83a4e3bae64ed9497f256e8/FLAG77ddc24c4 [2018-11-28 11:17:16,183 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:17:16,184 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-28 11:17:16,188 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/f9c703fd2/ee650873a83a4e3bae64ed9497f256e8/FLAG77ddc24c4 [2018-11-28 11:17:16,199 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/f9c703fd2/ee650873a83a4e3bae64ed9497f256e8 [2018-11-28 11:17:16,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:17:16,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:17:16,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:17:16,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:17:16,207 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:17:16,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690f7a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16, skipping insertion in model container [2018-11-28 11:17:16,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:17:16,224 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:17:16,323 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:17:16,326 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:17:16,336 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:17:16,345 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:17:16,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16 WrapperNode [2018-11-28 11:17:16,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:17:16,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:17:16,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:17:16,346 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:17:16,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:17:16,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:17:16,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:17:16,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:17:16,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... [2018-11-28 11:17:16,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:17:16,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:17:16,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:17:16,378 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:17:16,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/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 [2018-11-28 11:17:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:17:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:17:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:17:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:17:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:17:16,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:17:16,555 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:17:16,556 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 11:17:16,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:16 BoogieIcfgContainer [2018-11-28 11:17:16,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:17:16,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:17:16,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:17:16,559 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:17:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:17:16" (1/3) ... [2018-11-28 11:17:16,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd1f258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:17:16, skipping insertion in model container [2018-11-28 11:17:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:16" (2/3) ... [2018-11-28 11:17:16,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd1f258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:17:16, skipping insertion in model container [2018-11-28 11:17:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:16" (3/3) ... [2018-11-28 11:17:16,564 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8_true-unreach-call_true-termination.i [2018-11-28 11:17:16,572 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:17:16,578 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:17:16,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:17:16,620 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:17:16,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:17:16,621 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:17:16,621 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:17:16,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:17:16,622 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:17:16,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:17:16,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:17:16,622 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:17:16,636 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-28 11:17:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 11:17:16,639 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:16,640 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:17:16,642 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:16,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-28 11:17:16,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:16,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:16,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:16,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:16,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:17:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:17:16,735 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:17:16,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:17:16 BoogieIcfgContainer [2018-11-28 11:17:16,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:17:16,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:17:16,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:17:16,755 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:17:16,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:16" (3/4) ... [2018-11-28 11:17:16,759 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:17:16,759 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:17:16,759 INFO L168 Benchmark]: Toolchain (without parser) took 557.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:16,761 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:16,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.93 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:16,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.58 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:16,763 INFO L168 Benchmark]: Boogie Preprocessor took 16.78 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:16,763 INFO L168 Benchmark]: RCFGBuilder took 178.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -215.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:16,765 INFO L168 Benchmark]: TraceAbstraction took 197.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:16,765 INFO L168 Benchmark]: Witness Printer took 3.93 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:16,768 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 141.93 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.58 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.78 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 178.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -215.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 197.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.93 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:17:18,256 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:17:18,257 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:17:18,265 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:17:18,265 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:17:18,266 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:17:18,267 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:17:18,268 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:17:18,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:17:18,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:17:18,270 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:17:18,271 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:17:18,271 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:17:18,272 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:17:18,273 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:17:18,274 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:17:18,274 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:17:18,276 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:17:18,277 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:17:18,279 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:17:18,280 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:17:18,280 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:17:18,283 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:17:18,283 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:17:18,283 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:17:18,284 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:17:18,284 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:17:18,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:17:18,286 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:17:18,287 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:17:18,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:17:18,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:17:18,288 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:17:18,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:17:18,288 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:17:18,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:17:18,289 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 11:17:18,300 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:17:18,300 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:17:18,301 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:17:18,301 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:17:18,302 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:17:18,302 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:17:18,302 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:17:18,302 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:17:18,302 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:17:18,302 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:17:18,302 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:17:18,302 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:17:18,303 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:17:18,304 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:17:18,304 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:17:18,304 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:17:18,304 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:17:18,304 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:17:18,304 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:17:18,304 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:17:18,305 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:17:18,305 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 11:17:18,305 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:17:18,305 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 11:17:18,305 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 11:17:18,305 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer 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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2018-11-28 11:17:18,337 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:17:18,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:17:18,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:17:18,351 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:17:18,351 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:17:18,352 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-28 11:17:18,402 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/d0b21f47c/013e1a8348384c5594448a4551a7d91b/FLAGeaebc48fe [2018-11-28 11:17:18,736 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:17:18,737 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-28 11:17:18,740 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/d0b21f47c/013e1a8348384c5594448a4551a7d91b/FLAGeaebc48fe [2018-11-28 11:17:19,170 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/data/d0b21f47c/013e1a8348384c5594448a4551a7d91b [2018-11-28 11:17:19,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:17:19,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:17:19,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:17:19,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:17:19,177 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:17:19,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b188df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19, skipping insertion in model container [2018-11-28 11:17:19,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:17:19,198 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:17:19,301 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:17:19,307 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:17:19,321 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:17:19,334 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:17:19,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19 WrapperNode [2018-11-28 11:17:19,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:17:19,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:17:19,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:17:19,336 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:17:19,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:17:19,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:17:19,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:17:19,353 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:17:19,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... [2018-11-28 11:17:19,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:17:19,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:17:19,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:17:19,372 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:17:19,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/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 [2018-11-28 11:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:17:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:17:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:17:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:17:21,601 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:17:21,601 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 11:17:21,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:21 BoogieIcfgContainer [2018-11-28 11:17:21,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:17:21,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:17:21,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:17:21,606 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:17:21,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:17:19" (1/3) ... [2018-11-28 11:17:21,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7372cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:17:21, skipping insertion in model container [2018-11-28 11:17:21,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:19" (2/3) ... [2018-11-28 11:17:21,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7372cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:17:21, skipping insertion in model container [2018-11-28 11:17:21,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:21" (3/3) ... [2018-11-28 11:17:21,611 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8_true-unreach-call_true-termination.i [2018-11-28 11:17:21,617 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:17:21,622 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:17:21,632 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:17:21,652 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:17:21,653 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:17:21,653 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:17:21,653 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:17:21,657 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:17:21,658 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:17:21,658 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:17:21,658 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:17:21,658 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:17:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-28 11:17:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 11:17:21,674 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:21,674 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:17:21,676 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:21,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-28 11:17:21,683 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 11:17:21,683 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/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 [2018-11-28 11:17:21,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:18:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:18:06,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:18:08,865 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (= c_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse0)))) is different from false [2018-11-28 11:18:10,921 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (= c_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse0)))) is different from true [2018-11-28 11:18:23,369 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) (_ +zero 8 24))) (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0)))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse1))))) is different from false [2018-11-28 11:18:25,439 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) (_ +zero 8 24))) (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0)))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse1))))) is different from true [2018-11-28 11:18:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:18:25,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:18:25,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:18:25,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:18:25,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:18:25,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:18:25,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-11-28 11:18:25,477 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-11-28 11:18:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:18:25,490 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-11-28 11:18:25,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:18:25,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-11-28 11:18:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:18:25,496 INFO L225 Difference]: With dead ends: 18 [2018-11-28 11:18:25,497 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:18:25,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-11-28 11:18:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:18:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:18:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:18:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:18:25,518 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-11-28 11:18:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:18:25,518 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:18:25,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:18:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:18:25,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:18:25,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 11:18:25,554 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 11:18:25,554 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:18:25,554 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:18:25,554 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 11:18:25,555 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 11:18:25,555 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 11:18:25,555 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-28 11:18:25,555 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-11-28 11:18:25,555 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: true [2018-11-28 11:18:25,555 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 18) no Hoare annotation was computed. [2018-11-28 11:18:25,555 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-11-28 11:18:25,555 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2018-11-28 11:18:25,556 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-11-28 11:18:25,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:18:25 BoogieIcfgContainer [2018-11-28 11:18:25,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:18:25,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:18:25,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:18:25,558 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:18:25,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:21" (3/4) ... [2018-11-28 11:18:25,561 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:18:25,566 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:18:25,567 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:18:25,569 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 11:18:25,569 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 11:18:25,569 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:18:25,594 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5b0ede30-4739-4432-9da2-770ede247938/bin-2019/uautomizer/witness.graphml [2018-11-28 11:18:25,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:18:25,596 INFO L168 Benchmark]: Toolchain (without parser) took 66422.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -93.9 MB). Peak memory consumption was 998.3 kB. Max. memory is 11.5 GB. [2018-11-28 11:18:25,597 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:18:25,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.86 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:18:25,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.82 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:18:25,598 INFO L168 Benchmark]: Boogie Preprocessor took 18.98 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:18:25,599 INFO L168 Benchmark]: RCFGBuilder took 2230.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -136.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:18:25,599 INFO L168 Benchmark]: TraceAbstraction took 63955.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:18:25,600 INFO L168 Benchmark]: Witness Printer took 36.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:18:25,602 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 978.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.86 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 16.82 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.98 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2230.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -136.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 63955.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Witness Printer took 36.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 13 locations, 1 error locations. SAFE Result, 63.9s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 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, 44.9s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 2 QuantifiedInterpolants, 1224 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 4 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...