./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 9b4984d971b5a5a3b565edf502e7d7464558f166 ........................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 9b4984d971b5a5a3b565edf502e7d7464558f166 ............................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:47:11,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:11,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:11,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:11,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:11,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:11,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:11,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:11,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:11,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:11,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:11,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:11,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:11,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:11,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:11,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:11,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:11,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:11,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:11,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:11,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:11,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:11,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:11,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:11,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:11,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:11,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:11,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:11,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:11,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:11,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:11,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:11,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:11,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:11,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:11,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:11,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:11,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:11,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:11,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:11,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:11,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:47:11,815 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:11,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:11,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:11,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:11,827 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:11,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:11,827 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:11,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:11,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:11,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:11,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:11,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:11,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:11,829 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:11,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:11,829 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:11,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:11,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:11,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:11,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:11,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:11,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:11,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:11,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:11,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:11,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:11,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:47:11,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:11,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-25 08:47:11,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:12,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:12,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:12,009 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:12,009 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:12,010 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-25 08:47:12,064 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/4aa50d0fe/7a6db027c8c1411cb151267b1fc77be9/FLAGbaa0233d2 [2019-11-25 08:47:12,444 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:12,445 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-25 08:47:12,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/4aa50d0fe/7a6db027c8c1411cb151267b1fc77be9/FLAGbaa0233d2 [2019-11-25 08:47:12,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/4aa50d0fe/7a6db027c8c1411cb151267b1fc77be9 [2019-11-25 08:47:12,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:12,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:12,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:12,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:12,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:12,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:12" (1/1) ... [2019-11-25 08:47:12,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162cf989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:12, skipping insertion in model container [2019-11-25 08:47:12,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:12" (1/1) ... [2019-11-25 08:47:12,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:12,913 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:13,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:13,157 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:13,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:13,187 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:13,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13 WrapperNode [2019-11-25 08:47:13,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:13,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:13,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:13,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:13,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:13,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:13,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:13,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:13,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:13,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:13,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:13,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:13,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 [2019-11-25 08:47:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:13,458 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:13,458 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:47:13,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:13 BoogieIcfgContainer [2019-11-25 08:47:13,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:13,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:13,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:13,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:13,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:12" (1/3) ... [2019-11-25 08:47:13,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368f5376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:13, skipping insertion in model container [2019-11-25 08:47:13,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (2/3) ... [2019-11-25 08:47:13,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368f5376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:13, skipping insertion in model container [2019-11-25 08:47:13,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:13" (3/3) ... [2019-11-25 08:47:13,467 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-25 08:47:13,476 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:13,482 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:47:13,492 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:47:13,516 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:13,516 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:13,516 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:13,516 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:13,516 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:13,517 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:13,517 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:13,517 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-25 08:47:13,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:47:13,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:13,543 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:47:13,543 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-25 08:47:13,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:13,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214989337] [2019-11-25 08:47:13,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:13,658 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:13,658 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:47:13,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:47:13 BoogieIcfgContainer [2019-11-25 08:47:13,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:47:13,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:13,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:13,670 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:13,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:13" (3/4) ... [2019-11-25 08:47:13,673 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:47:13,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:13,675 INFO L168 Benchmark]: Toolchain (without parser) took 799.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:13,676 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:13,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:13,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.18 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. [2019-11-25 08:47:13,678 INFO L168 Benchmark]: Boogie Preprocessor took 23.98 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. [2019-11-25 08:47:13,678 INFO L168 Benchmark]: RCFGBuilder took 212.72 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:13,679 INFO L168 Benchmark]: TraceAbstraction took 208.64 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:13,680 INFO L168 Benchmark]: Witness Printer took 4.16 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. [2019-11-25 08:47:13,683 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 309.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.18 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. * Boogie Preprocessor took 23.98 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. * RCFGBuilder took 212.72 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 208.64 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.16 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: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-6b5699a [2019-11-25 08:47:15,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:15,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:15,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:15,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:15,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:15,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:15,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:15,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:15,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:15,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:15,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:15,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:15,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:15,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:15,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:15,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:15,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:15,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:15,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:15,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:15,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:15,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:15,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:15,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:15,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:15,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:15,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:15,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:15,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:15,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:15,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:15,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:15,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:15,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:15,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:15,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:15,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:15,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:15,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:15,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:15,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:47:15,635 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:15,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:15,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:15,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:15,637 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:15,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:15,637 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:15,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:15,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:15,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:15,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:15,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:15,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:47:15,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:47:15,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:47:15,640 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:15,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:15,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:15,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:15,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:15,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:15,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:15,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:15,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:15,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:15,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:15,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:15,643 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:47:15,643 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:47:15,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:15,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:47:15,644 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-25 08:47:15,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:15,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:15,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:15,913 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:15,913 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:15,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-25 08:47:15,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/d831c397e/ed57d080ec2641fea93bce32a44ebdea/FLAG3102e5ec8 [2019-11-25 08:47:16,337 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:16,338 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-25 08:47:16,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/d831c397e/ed57d080ec2641fea93bce32a44ebdea/FLAG3102e5ec8 [2019-11-25 08:47:16,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/data/d831c397e/ed57d080ec2641fea93bce32a44ebdea [2019-11-25 08:47:16,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:16,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:16,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:16,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:16,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:16,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:16,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd8dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16, skipping insertion in model container [2019-11-25 08:47:16,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:16,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:16,737 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:16,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:16,912 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:16,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:16,939 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:16,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16 WrapperNode [2019-11-25 08:47:16,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:16,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:16,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:16,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:16,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:16,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:17,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:17,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:17,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:17,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... [2019-11-25 08:47:17,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:17,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:17,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:17,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:17,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 [2019-11-25 08:47:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:19,272 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:19,272 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:47:19,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:19 BoogieIcfgContainer [2019-11-25 08:47:19,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:19,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:19,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:19,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:19,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:16" (1/3) ... [2019-11-25 08:47:19,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9cebe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:19, skipping insertion in model container [2019-11-25 08:47:19,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:16" (2/3) ... [2019-11-25 08:47:19,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9cebe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:19, skipping insertion in model container [2019-11-25 08:47:19,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:19" (3/3) ... [2019-11-25 08:47:19,278 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-25 08:47:19,284 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:19,290 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:47:19,297 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:47:19,313 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:19,313 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:19,314 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:19,314 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:19,314 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:19,314 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:19,314 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:19,314 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-25 08:47:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:47:19,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:19,330 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:47:19,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:47:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-25 08:47:19,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:19,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78796050] [2019-11-25 08:47:19,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/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 [2019-11-25 08:47:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:50,809 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:47:50,809 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:47:51,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:47:51,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:47:51 BoogieIcfgContainer [2019-11-25 08:47:51,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:47:51,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:51,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:51,025 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:51,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:19" (3/4) ... [2019-11-25 08:47:51,028 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:47:51,070 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc276058-5d85-4f82-a7a1-8f172eeb427d/bin/uautomizer/witness.graphml [2019-11-25 08:47:51,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:51,072 INFO L168 Benchmark]: Toolchain (without parser) took 34357.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:51,072 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:51,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:51,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:51,074 INFO L168 Benchmark]: Boogie Preprocessor took 18.88 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:51,075 INFO L168 Benchmark]: RCFGBuilder took 2236.13 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:51,076 INFO L168 Benchmark]: TraceAbstraction took 31751.31 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:51,076 INFO L168 Benchmark]: Witness Printer took 45.38 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. [2019-11-25 08:47:51,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 226.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 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 76.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.88 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2236.13 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 31751.31 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 31.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 16.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...