./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ........................................................................................................................................................................................................................ 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_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ........................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-10-27 00:41:10,145 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:41:10,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:41:10,155 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:41:10,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:41:10,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:41:10,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:41:10,157 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:41:10,159 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:41:10,160 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:41:10,160 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:41:10,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:41:10,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:41:10,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:41:10,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:41:10,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:41:10,164 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:41:10,165 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:41:10,167 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:41:10,168 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:41:10,169 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:41:10,170 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:41:10,172 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:41:10,172 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:41:10,172 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:41:10,173 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:41:10,174 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:41:10,174 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:41:10,177 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:41:10,178 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:41:10,180 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:41:10,180 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:41:10,181 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:41:10,181 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:41:10,181 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:41:10,182 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:41:10,182 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-27 00:41:10,197 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:41:10,197 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:41:10,198 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:41:10,199 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 00:41:10,199 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 00:41:10,201 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 00:41:10,201 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 00:41:10,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:41:10,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:41:10,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:41:10,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:41:10,202 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:41:10,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:41:10,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:41:10,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:41:10,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:41:10,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:41:10,203 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:41:10,203 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:41:10,203 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:41:10,204 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 00:41:10,204 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:41:10,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:41:10,204 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_b46fa503-7d07-4ed8-abf1-647b6082775b/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-10-27 00:41:10,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:41:10,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:41:10,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:41:10,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:41:10,250 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:41:10,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-27 00:41:10,299 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/08143907c/dcb35d67e77d4f109c2cb66e019fcc12/FLAG51f5560d5 [2018-10-27 00:41:10,666 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:41:10,666 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-27 00:41:10,672 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/08143907c/dcb35d67e77d4f109c2cb66e019fcc12/FLAG51f5560d5 [2018-10-27 00:41:10,685 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/08143907c/dcb35d67e77d4f109c2cb66e019fcc12 [2018-10-27 00:41:10,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:41:10,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:41:10,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:41:10,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:41:10,696 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:41:10,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d0e43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10, skipping insertion in model container [2018-10-27 00:41:10,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:41:10,724 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:41:10,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:41:10,853 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:41:10,865 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:41:10,877 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:41:10,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10 WrapperNode [2018-10-27 00:41:10,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:41:10,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:41:10,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:41:10,879 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:41:10,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... [2018-10-27 00:41:10,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:41:10,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:41:10,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:41:10,906 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:41:10,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/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 [2018-10-27 00:41:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:41:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:41:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:41:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-27 00:41:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-27 00:41:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-27 00:41:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:41:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:41:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:41:11,200 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:41:11,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:41:11 BoogieIcfgContainer [2018-10-27 00:41:11,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:41:11,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:41:11,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:41:11,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:41:11,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:41:10" (1/3) ... [2018-10-27 00:41:11,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe8ae42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:41:11, skipping insertion in model container [2018-10-27 00:41:11,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:10" (2/3) ... [2018-10-27 00:41:11,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe8ae42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:41:11, skipping insertion in model container [2018-10-27 00:41:11,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:41:11" (3/3) ... [2018-10-27 00:41:11,209 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-10-27 00:41:11,219 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:41:11,225 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:41:11,240 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:41:11,267 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:41:11,267 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:41:11,267 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:41:11,268 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:41:11,268 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:41:11,268 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:41:11,268 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:41:11,268 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:41:11,268 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:41:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-27 00:41:11,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-27 00:41:11,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:41:11,290 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:41:11,292 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:41:11,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:41:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-27 00:41:11,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:41:11,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:41:11,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:41:11,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:41:11,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:41:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:41:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:41:11,395 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:41:11,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:41:11 BoogieIcfgContainer [2018-10-27 00:41:11,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:41:11,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:41:11,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:41:11,422 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:41:11,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:41:11" (3/4) ... [2018-10-27 00:41:11,426 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 00:41:11,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:41:11,431 INFO L168 Benchmark]: Toolchain (without parser) took 740.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 953.1 MB in the beginning and 1.1 GB in the end (delta: -160.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:41:11,434 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:41:11,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.10 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:11,437 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 ms. Allocated memory is still 1.0 GB. Free memory is still 942.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:41:11,438 INFO L168 Benchmark]: RCFGBuilder took 295.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.2 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:11,438 INFO L168 Benchmark]: TraceAbstraction took 219.74 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:11,439 INFO L168 Benchmark]: Witness Printer took 8.23 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. [2018-10-27 00:41:11,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.10 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.78 ms. Allocated memory is still 1.0 GB. Free memory is still 942.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 295.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.2 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 219.74 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: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Witness Printer took 8.23 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 < 1.398f) 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 0.1.23-1dbac8b [2018-10-27 00:41:13,321 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:41:13,323 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:41:13,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:41:13,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:41:13,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:41:13,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:41:13,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:41:13,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:41:13,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:41:13,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:41:13,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:41:13,341 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:41:13,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:41:13,343 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:41:13,344 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:41:13,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:41:13,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:41:13,348 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:41:13,349 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:41:13,349 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:41:13,350 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:41:13,352 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:41:13,352 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:41:13,353 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:41:13,353 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:41:13,355 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:41:13,355 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:41:13,356 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:41:13,357 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:41:13,357 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:41:13,358 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:41:13,358 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:41:13,358 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:41:13,359 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:41:13,360 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:41:13,360 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-27 00:41:13,372 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:41:13,372 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:41:13,372 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:41:13,373 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 00:41:13,373 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 00:41:13,373 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 00:41:13,373 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 00:41:13,374 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:41:13,374 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:41:13,374 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:41:13,374 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:41:13,374 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:41:13,374 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:41:13,375 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:41:13,376 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 00:41:13,376 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 00:41:13,376 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:41:13,376 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:41:13,376 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:41:13,376 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:41:13,376 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:41:13,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:41:13,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:41:13,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:41:13,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:41:13,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:41:13,377 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:41:13,377 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-27 00:41:13,378 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:41:13,378 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 00:41:13,378 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 00:41:13,378 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_b46fa503-7d07-4ed8-abf1-647b6082775b/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-10-27 00:41:13,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:41:13,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:41:13,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:41:13,430 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:41:13,431 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:41:13,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-27 00:41:13,481 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/e8ed1cbeb/2d7dc0fcf51b40c89aa6c201c6eca0f8/FLAGe820f1bb8 [2018-10-27 00:41:13,856 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:41:13,857 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-10-27 00:41:13,862 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/e8ed1cbeb/2d7dc0fcf51b40c89aa6c201c6eca0f8/FLAGe820f1bb8 [2018-10-27 00:41:13,875 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/data/e8ed1cbeb/2d7dc0fcf51b40c89aa6c201c6eca0f8 [2018-10-27 00:41:13,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:41:13,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:41:13,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:41:13,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:41:13,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:41:13,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:41:13" (1/1) ... [2018-10-27 00:41:13,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d80f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:13, skipping insertion in model container [2018-10-27 00:41:13,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:41:13" (1/1) ... [2018-10-27 00:41:13,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:41:13,919 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:41:14,065 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:41:14,070 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:41:14,084 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:41:14,100 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:41:14,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14 WrapperNode [2018-10-27 00:41:14,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:41:14,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:41:14,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:41:14,101 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:41:14,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... [2018-10-27 00:41:14,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:41:14,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:41:14,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:41:14,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:41:14,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/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 [2018-10-27 00:41:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:41:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:41:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:41:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-27 00:41:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-27 00:41:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-27 00:41:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:41:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:41:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:41:16,411 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:41:16,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:41:16 BoogieIcfgContainer [2018-10-27 00:41:16,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:41:16,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:41:16,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:41:16,416 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:41:16,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:41:13" (1/3) ... [2018-10-27 00:41:16,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d59d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:41:16, skipping insertion in model container [2018-10-27 00:41:16,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:41:14" (2/3) ... [2018-10-27 00:41:16,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d59d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:41:16, skipping insertion in model container [2018-10-27 00:41:16,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:41:16" (3/3) ... [2018-10-27 00:41:16,420 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-10-27 00:41:16,428 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:41:16,434 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:41:16,448 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:41:16,469 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:41:16,469 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:41:16,470 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:41:16,470 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:41:16,470 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:41:16,470 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:41:16,470 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:41:16,470 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:41:16,470 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:41:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-27 00:41:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-27 00:41:16,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:41:16,490 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:41:16,492 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:41:16,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:41:16,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-27 00:41:16,501 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:41:16,502 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/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 [2018-10-27 00:41:16,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:41:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:41:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:41:33,606 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:41:33,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:41:33 BoogieIcfgContainer [2018-10-27 00:41:33,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:41:33,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:41:33,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:41:33,628 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:41:33,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:41:16" (3/4) ... [2018-10-27 00:41:33,631 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 00:41:33,668 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b46fa503-7d07-4ed8-abf1-647b6082775b/bin-2019/uautomizer/witness.graphml [2018-10-27 00:41:33,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:41:33,669 INFO L168 Benchmark]: Toolchain (without parser) took 19790.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -146.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:41:33,670 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-27 00:41:33,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.78 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:33,671 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 938.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:33,672 INFO L168 Benchmark]: RCFGBuilder took 2282.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:33,672 INFO L168 Benchmark]: TraceAbstraction took 17214.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:41:33,673 INFO L168 Benchmark]: Witness Printer took 41.33 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. [2018-10-27 00:41:33,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 220.78 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.14 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 938.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2282.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17214.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Witness Printer took 41.33 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; VAL [IN=0.999995768070221, result=1.3984363079071045, x=0.999995768070221] [L14] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.999995768070221, result=1.3984363079071045, x=0.999995768070221] [L15] __VERIFIER_error() VAL [IN=0.999995768070221, result=1.3984363079071045, x=0.999995768070221] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 17.1s 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, 13.0s 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 proved your program to be incorrect! Received shutdown request...