./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/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 9b4984d971b5a5a3b565edf502e7d7464558f166 .................................................................................................................................................................................................................................... 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_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/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 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 0.1.23-5842f4b [2018-11-18 13:56:13,016 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:56:13,017 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:56:13,024 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:56:13,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:56:13,025 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:56:13,026 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:56:13,027 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:56:13,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:56:13,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:56:13,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:56:13,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:56:13,030 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:56:13,031 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:56:13,032 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:56:13,032 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:56:13,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:56:13,034 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:56:13,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:56:13,036 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:56:13,037 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:56:13,038 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:56:13,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:56:13,039 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:56:13,039 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:56:13,040 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:56:13,040 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:56:13,041 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:56:13,041 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:56:13,042 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:56:13,042 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:56:13,042 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:56:13,042 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:56:13,042 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:56:13,043 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:56:13,043 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:56:13,043 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 13:56:13,050 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:56:13,050 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:56:13,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:56:13,051 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:56:13,051 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:56:13,051 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:56:13,051 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:56:13,051 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:56:13,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:56:13,053 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:56:13,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:56:13,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:56:13,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:56:13,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:56:13,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:56:13,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:56:13,053 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:56:13,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:56:13,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:56:13,054 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:56:13,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:56:13,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:56:13,054 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_379da6e7-05d2-4f03-a365-62c98cadb11c/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2018-11-18 13:56:13,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:56:13,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:56:13,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:56:13,092 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:56:13,092 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:56:13,093 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-18 13:56:13,138 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/4d4067bfb/738c21bad9c34d11b50e8da994d13ae9/FLAGafcfe715c [2018-11-18 13:56:13,525 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:56:13,525 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-18 13:56:13,529 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/4d4067bfb/738c21bad9c34d11b50e8da994d13ae9/FLAGafcfe715c [2018-11-18 13:56:13,539 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/4d4067bfb/738c21bad9c34d11b50e8da994d13ae9 [2018-11-18 13:56:13,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:56:13,543 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:56:13,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:56:13,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:56:13,547 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:56:13,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e779c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13, skipping insertion in model container [2018-11-18 13:56:13,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:56:13,567 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:56:13,667 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:56:13,669 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:56:13,678 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:56:13,686 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:56:13,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13 WrapperNode [2018-11-18 13:56:13,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:56:13,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:56:13,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:56:13,687 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:56:13,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... [2018-11-18 13:56:13,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:56:13,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:56:13,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:56:13,704 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:56:13,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/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 [2018-11-18 13:56:13,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:56:13,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:56:13,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:56:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:56:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 13:56:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:56:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:56:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:56:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:56:13,871 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:56:13,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:13 BoogieIcfgContainer [2018-11-18 13:56:13,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:56:13,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:56:13,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:56:13,876 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:56:13,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:56:13" (1/3) ... [2018-11-18 13:56:13,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa8702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:13, skipping insertion in model container [2018-11-18 13:56:13,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:13" (2/3) ... [2018-11-18 13:56:13,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa8702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:13, skipping insertion in model container [2018-11-18 13:56:13,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:13" (3/3) ... [2018-11-18 13:56:13,879 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-11-18 13:56:13,886 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:56:13,892 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:56:13,904 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:56:13,928 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:56:13,929 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:56:13,929 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:56:13,929 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:56:13,929 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:56:13,929 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:56:13,929 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:56:13,929 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:56:13,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:56:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-18 13:56:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 13:56:13,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:56:13,950 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:56:13,952 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:56:13,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:56:13,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-18 13:56:13,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:56:13,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:56:14,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:56:14,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:56:14,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:56:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:56:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:56:14,047 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:56:14,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:56:14 BoogieIcfgContainer [2018-11-18 13:56:14,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:56:14,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:56:14,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:56:14,065 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:56:14,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:13" (3/4) ... [2018-11-18 13:56:14,069 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:56:14,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:56:14,069 INFO L168 Benchmark]: Toolchain (without parser) took 526.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:56:14,071 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:56:14,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.14 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:56:14,072 INFO L168 Benchmark]: Boogie Preprocessor took 16.31 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:56:14,072 INFO L168 Benchmark]: RCFGBuilder took 168.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:56:14,073 INFO L168 Benchmark]: TraceAbstraction took 192.02 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: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:56:14,074 INFO L168 Benchmark]: Witness Printer took 4.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:56:14,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.14 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.31 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 168.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 192.02 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: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.01 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; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.39f) 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 0.1.23-5842f4b [2018-11-18 13:56:15,462 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:56:15,464 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:56:15,472 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:56:15,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:56:15,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:56:15,474 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:56:15,475 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:56:15,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:56:15,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:56:15,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:56:15,478 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:56:15,478 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:56:15,479 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:56:15,480 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:56:15,481 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:56:15,481 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:56:15,482 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:56:15,484 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:56:15,485 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:56:15,485 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:56:15,486 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:56:15,488 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:56:15,488 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:56:15,488 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:56:15,489 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:56:15,489 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:56:15,490 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:56:15,490 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:56:15,491 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:56:15,491 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:56:15,492 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:56:15,492 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:56:15,492 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:56:15,493 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:56:15,493 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:56:15,493 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 13:56:15,503 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:56:15,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:56:15,504 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:56:15,504 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:56:15,505 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:56:15,505 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:56:15,505 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:56:15,505 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:56:15,506 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:56:15,507 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:56:15,507 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:56:15,507 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:56:15,507 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:56:15,507 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:56:15,507 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:56:15,507 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:56:15,508 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:56:15,508 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:56:15,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:56:15,508 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:56:15,508 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:56:15,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:56:15,509 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 13:56:15,509 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:56:15,509 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:56:15,509 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:56:15,509 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_379da6e7-05d2-4f03-a365-62c98cadb11c/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2018-11-18 13:56:15,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:56:15,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:56:15,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:56:15,551 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:56:15,551 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:56:15,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-18 13:56:15,594 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/075ef134e/af4e02e1c19340b885b050ea987218d6/FLAGafbdd35aa [2018-11-18 13:56:15,916 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:56:15,916 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-18 13:56:15,920 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/075ef134e/af4e02e1c19340b885b050ea987218d6/FLAGafbdd35aa [2018-11-18 13:56:16,352 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/data/075ef134e/af4e02e1c19340b885b050ea987218d6 [2018-11-18 13:56:16,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:56:16,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:56:16,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:56:16,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:56:16,358 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:56:16,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1c7639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16, skipping insertion in model container [2018-11-18 13:56:16,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:56:16,377 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:56:16,488 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:56:16,493 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:56:16,507 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:56:16,516 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:56:16,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16 WrapperNode [2018-11-18 13:56:16,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:56:16,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:56:16,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:56:16,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:56:16,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... [2018-11-18 13:56:16,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:56:16,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:56:16,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:56:16,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:56:16,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/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 [2018-11-18 13:56:16,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:56:16,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:56:16,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:56:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:56:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 13:56:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:56:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:56:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:56:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:56:18,759 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:56:18,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:18 BoogieIcfgContainer [2018-11-18 13:56:18,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:56:18,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:56:18,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:56:18,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:56:18,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:56:16" (1/3) ... [2018-11-18 13:56:18,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260b8867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:18, skipping insertion in model container [2018-11-18 13:56:18,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:16" (2/3) ... [2018-11-18 13:56:18,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260b8867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:18, skipping insertion in model container [2018-11-18 13:56:18,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:18" (3/3) ... [2018-11-18 13:56:18,765 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-11-18 13:56:18,771 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:56:18,775 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:56:18,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:56:18,800 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:56:18,800 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:56:18,800 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:56:18,800 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:56:18,801 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:56:18,801 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:56:18,801 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:56:18,801 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:56:18,801 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:56:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-18 13:56:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 13:56:18,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:56:18,816 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:56:18,818 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:56:18,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:56:18,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-18 13:56:18,826 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:56:18,827 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/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 [2018-11-18 13:56:18,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:57:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:57:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:57:22,405 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:57:22,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:57:22 BoogieIcfgContainer [2018-11-18 13:57:22,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:57:22,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:57:22,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:57:22,420 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:57:22,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:18" (3/4) ... [2018-11-18 13:57:22,422 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 13:57:22,446 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_379da6e7-05d2-4f03-a365-62c98cadb11c/bin-2019/uautomizer/witness.graphml [2018-11-18 13:57:22,446 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:57:22,447 INFO L168 Benchmark]: Toolchain (without parser) took 66092.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -123.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:57:22,448 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:57:22,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.88 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:57:22,449 INFO L168 Benchmark]: Boogie Preprocessor took 20.66 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:57:22,450 INFO L168 Benchmark]: RCFGBuilder took 2221.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:57:22,450 INFO L168 Benchmark]: TraceAbstraction took 63659.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:57:22,450 INFO L168 Benchmark]: Witness Printer took 26.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:57:22,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.88 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.66 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2221.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 63659.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Witness Printer took 26.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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; VAL [IN=0.97540283203125, result=1.3914170265197754, x=0.97540283203125] [L14] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.97540283203125, result=1.3914170265197754, x=0.97540283203125] [L15] __VERIFIER_error() VAL [IN=0.97540283203125, result=1.3914170265197754, x=0.97540283203125] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 63.6s 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, 50.2s 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 proved your program to be incorrect! Received shutdown request...