./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c --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_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ....................................................................................................................................................................................................................................................................................................................................................................... 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_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 17:30:27,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:30:27,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:30:27,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:30:27,166 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:30:27,167 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:30:27,168 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:30:27,169 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:30:27,171 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:30:27,171 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:30:27,172 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:30:27,173 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:30:27,173 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:30:27,174 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:30:27,175 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:30:27,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:30:27,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:30:27,178 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:30:27,180 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:30:27,181 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:30:27,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:30:27,184 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:30:27,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:30:27,186 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:30:27,186 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:30:27,187 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:30:27,188 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:30:27,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:30:27,189 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:30:27,191 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:30:27,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:30:27,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:30:27,192 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:30:27,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:30:27,193 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:30:27,194 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:30:27,195 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 17:30:27,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:30:27,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:30:27,207 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:30:27,207 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 17:30:27,208 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:30:27,208 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:30:27,208 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:30:27,208 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:30:27,209 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:30:27,210 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:30:27,211 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:30:27,211 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:30:27,211 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:30:27,211 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:30:27,211 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:30:27,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:30:27,212 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:30:27,212 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:30:27,212 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:30:27,212 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 17:30:27,212 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:30:27,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:30:27,212 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_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-11-18 17:30:27,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:30:27,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:30:27,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:30:27,248 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:30:27,248 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:30:27,248 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 17:30:27,288 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/2667e1a56/3f3fcefa030a41db8242e5df842302cc/FLAG13645ffcd [2018-11-18 17:30:27,643 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:30:27,644 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 17:30:27,649 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/2667e1a56/3f3fcefa030a41db8242e5df842302cc/FLAG13645ffcd [2018-11-18 17:30:28,061 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/2667e1a56/3f3fcefa030a41db8242e5df842302cc [2018-11-18 17:30:28,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:30:28,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 17:30:28,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:30:28,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:30:28,069 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:30:28,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad4eacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28, skipping insertion in model container [2018-11-18 17:30:28,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:30:28,098 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:30:28,246 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:30:28,255 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:30:28,278 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:30:28,292 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:30:28,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28 WrapperNode [2018-11-18 17:30:28,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:30:28,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:30:28,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:30:28,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:30:28,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... [2018-11-18 17:30:28,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:30:28,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:30:28,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:30:28,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:30:28,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 17:30:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:30:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:30:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-11-18 17:30:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 17:30:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 17:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-11-18 17:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 17:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 17:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 17:30:28,705 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:30:28,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:30:28 BoogieIcfgContainer [2018-11-18 17:30:28,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:30:28,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:30:28,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:30:28,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:30:28,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:30:28" (1/3) ... [2018-11-18 17:30:28,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1d0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:30:28, skipping insertion in model container [2018-11-18 17:30:28,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:28" (2/3) ... [2018-11-18 17:30:28,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1d0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:30:28, skipping insertion in model container [2018-11-18 17:30:28,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:30:28" (3/3) ... [2018-11-18 17:30:28,713 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-11-18 17:30:28,723 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:30:28,731 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:30:28,748 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:30:28,780 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:30:28,781 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:30:28,781 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:30:28,781 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:30:28,781 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:30:28,781 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:30:28,781 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:30:28,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:30:28,782 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:30:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-18 17:30:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 17:30:28,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:28,808 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:28,810 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:28,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:28,816 INFO L82 PathProgramCache]: Analyzing trace with hash 974726898, now seen corresponding path program 1 times [2018-11-18 17:30:28,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:30:28,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:30:28,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:30:28,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:28,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:30:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:30:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:30:28,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:30:28,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:30:28,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:30:28,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:30:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:30:28,954 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-11-18 17:30:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:30:28,976 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-11-18 17:30:28,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:30:28,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-18 17:30:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:30:28,987 INFO L225 Difference]: With dead ends: 88 [2018-11-18 17:30:28,987 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 17:30:28,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:30:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 17:30:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 17:30:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 17:30:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-11-18 17:30:29,022 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-11-18 17:30:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:30:29,022 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-11-18 17:30:29,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:30:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-11-18 17:30:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 17:30:29,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:29,024 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:29,025 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:29,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:29,025 INFO L82 PathProgramCache]: Analyzing trace with hash 399169361, now seen corresponding path program 1 times [2018-11-18 17:30:29,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:30:29,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:30:29,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:30:29,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:29,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:30:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:30:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:30:29,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:30:29,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:30:29,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:30:29,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:30:29,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:30:29,092 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 3 states. [2018-11-18 17:30:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:30:29,122 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-18 17:30:29,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:30:29,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-18 17:30:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:30:29,124 INFO L225 Difference]: With dead ends: 47 [2018-11-18 17:30:29,124 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 17:30:29,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:30:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 17:30:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 17:30:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 17:30:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-18 17:30:29,130 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2018-11-18 17:30:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:30:29,132 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-18 17:30:29,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:30:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-18 17:30:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 17:30:29,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:29,133 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:29,134 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:29,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1762949246, now seen corresponding path program 1 times [2018-11-18 17:30:29,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:30:29,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:30:29,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:30:29,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:29,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:30:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:30:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:30:29,209 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:30:29,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:30:29 BoogieIcfgContainer [2018-11-18 17:30:29,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:30:29,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:30:29,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:30:29,238 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:30:29,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:30:28" (3/4) ... [2018-11-18 17:30:29,242 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:30:29,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:30:29,242 INFO L168 Benchmark]: Toolchain (without parser) took 1178.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -135.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:29,244 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:30:29,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 944.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:29,245 INFO L168 Benchmark]: Boogie Preprocessor took 38.63 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 941.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:29,245 INFO L168 Benchmark]: RCFGBuilder took 374.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:29,246 INFO L168 Benchmark]: TraceAbstraction took 530.97 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: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:29,246 INFO L168 Benchmark]: Witness Printer took 3.86 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 17:30:29,248 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 226.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 944.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.63 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 941.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 374.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 530.97 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: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.86 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: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=10, one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] FCALL float iptr; VAL [iptr={14:0}, one_modf=1] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=7, iptr={14:0}, one_modf=1] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=7, iptr={14:0}, iptr={14:0}, one_modf=1, x=7] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (i0) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, one_modf=1, x=7] [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, one_modf=1, x=7] [L22] COND TRUE j0 < 23 VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L23] COND TRUE j0 < 0 VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L25] FCALL ieee_float_shape_type sf_u; [L26] FCALL sf_u.word = (i0 & 0x80000000) [L27] EXPR, FCALL sf_u.value [L27] FCALL (*iptr) = sf_u.value [L28] COND FALSE !(0) VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L29] RET return x; VAL [\old(x)=7, \result=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L82] EXPR modf_float(x, &iptr) VAL [iptr={14:0}, modf_float(x, &iptr)=7, one_modf=1, x=7] [L82] float res = modf_float(x, &iptr); [L85] EXPR, FCALL \read(iptr) VAL [\read(iptr)=13, iptr={14:0}, one_modf=1, res=7, x=7] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=13, one_modf=1] [L73] RET return x != x; VAL [\old(x)=13, \result=1, one_modf=1, x=13] [L85] EXPR isnan_float(iptr) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, one_modf=1, res=7, x=7] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=7, x=7] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=7, one_modf=1] [L73] RET return x != x; VAL [\old(x)=7, \result=0, one_modf=1, x=7] [L85] EXPR isnan_float(res) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=7, x=7] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=7, x=7] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={14:0}, one_modf=1, res=7, x=7] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 17:30:30,981 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-11-18 17:30:31,013 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:30:31,013 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:30:31,014 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:30:31,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:30:31,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:30:31,016 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:30:31,017 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:30:31,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:30:31,018 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:30:31,018 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:30:31,018 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:30:31,019 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:30:31,019 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:30:31,020 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 17:30:31,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:30:31,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:30:31,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:30:31,033 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 17:30:31,033 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:30:31,033 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:30:31,034 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:30:31,034 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:30:31,034 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:30:31,034 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:30:31,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:30:31,035 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:30:31,036 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:30:31,036 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:30:31,036 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:30:31,036 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:30:31,036 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:30:31,036 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:30:31,037 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:30:31,037 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:30:31,037 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:30:31,037 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:30:31,037 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 17:30:31,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:30:31,038 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:30:31,038 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 17:30:31,038 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_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-11-18 17:30:31,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:30:31,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:30:31,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:30:31,089 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:30:31,089 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:30:31,090 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 17:30:31,131 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/f15bce821/ef4e60fe83184cbab9cadce411754e44/FLAG2b72c947b [2018-11-18 17:30:31,538 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:30:31,539 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 17:30:31,543 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/f15bce821/ef4e60fe83184cbab9cadce411754e44/FLAG2b72c947b [2018-11-18 17:30:31,553 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/data/f15bce821/ef4e60fe83184cbab9cadce411754e44 [2018-11-18 17:30:31,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:30:31,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 17:30:31,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:30:31,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:30:31,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:30:31,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656ff51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31, skipping insertion in model container [2018-11-18 17:30:31,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:30:31,588 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:30:31,734 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:30:31,746 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:30:31,770 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:30:31,783 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:30:31,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31 WrapperNode [2018-11-18 17:30:31,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:30:31,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:30:31,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:30:31,784 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:30:31,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... [2018-11-18 17:30:31,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:30:31,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:30:31,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:30:31,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:30:31,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 17:30:31,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:30:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:30:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-11-18 17:30:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 17:30:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:30:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 17:30:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-11-18 17:30:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:30:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:30:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 17:30:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 17:30:32,093 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,103 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,199 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,212 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,227 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,254 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,264 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:30:32,280 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:30:32,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:30:32 BoogieIcfgContainer [2018-11-18 17:30:32,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:30:32,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:30:32,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:30:32,283 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:30:32,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:30:31" (1/3) ... [2018-11-18 17:30:32,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324785f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:30:32, skipping insertion in model container [2018-11-18 17:30:32,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:30:31" (2/3) ... [2018-11-18 17:30:32,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324785f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:30:32, skipping insertion in model container [2018-11-18 17:30:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:30:32" (3/3) ... [2018-11-18 17:30:32,286 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-11-18 17:30:32,293 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:30:32,298 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:30:32,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:30:32,338 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:30:32,338 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:30:32,338 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:30:32,338 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:30:32,338 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:30:32,339 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:30:32,339 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:30:32,339 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:30:32,339 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:30:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-18 17:30:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 17:30:32,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:32,356 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:32,358 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:32,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash 974726898, now seen corresponding path program 1 times [2018-11-18 17:30:32,365 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:30:32,366 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/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 17:30:32,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:30:32,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:30:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:30:32,480 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:30:32,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:30:32,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:30:32,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:30:32,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:30:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:30:32,507 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-11-18 17:30:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:30:32,525 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-11-18 17:30:32,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:30:32,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-18 17:30:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:30:32,533 INFO L225 Difference]: With dead ends: 88 [2018-11-18 17:30:32,533 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 17:30:32,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:30:32,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 17:30:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 17:30:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 17:30:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-11-18 17:30:32,566 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-11-18 17:30:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:30:32,566 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-11-18 17:30:32,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:30:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-11-18 17:30:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 17:30:32,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:32,568 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:32,569 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:32,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 399169361, now seen corresponding path program 1 times [2018-11-18 17:30:32,570 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:30:32,570 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 17:30:32,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:30:32,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:30:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:30:32,767 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:30:32,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:30:32,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 17:30:32,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:30:32,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:30:32,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:30:32,784 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 7 states. [2018-11-18 17:30:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:30:33,322 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-11-18 17:30:33,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:30:33,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-18 17:30:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:30:33,324 INFO L225 Difference]: With dead ends: 60 [2018-11-18 17:30:33,324 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 17:30:33,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:30:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 17:30:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 17:30:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 17:30:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-18 17:30:33,331 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2018-11-18 17:30:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:30:33,331 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-18 17:30:33,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:30:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-18 17:30:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 17:30:33,332 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:33,332 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:33,333 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:33,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:33,333 INFO L82 PathProgramCache]: Analyzing trace with hash -402292240, now seen corresponding path program 1 times [2018-11-18 17:30:33,335 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:30:33,335 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 17:30:33,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:30:33,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:30:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:30:33,431 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:30:33,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:30:33,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:30:33,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:30:33,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:30:33,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:30:33,444 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2018-11-18 17:30:33,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:30:33,453 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-18 17:30:33,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:30:33,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-18 17:30:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:30:33,455 INFO L225 Difference]: With dead ends: 34 [2018-11-18 17:30:33,455 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 17:30:33,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:30:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 17:30:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 17:30:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 17:30:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-18 17:30:33,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-11-18 17:30:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:30:33,461 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-18 17:30:33,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:30:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-18 17:30:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 17:30:33,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:30:33,462 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:30:33,462 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:30:33,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:30:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash -733570753, now seen corresponding path program 1 times [2018-11-18 17:30:33,463 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:30:33,463 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 17:30:33,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:30:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:30:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:30:33,738 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:30:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:30:33 BoogieIcfgContainer [2018-11-18 17:30:33,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:30:33,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:30:33,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:30:33,771 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:30:33,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:30:32" (3/4) ... [2018-11-18 17:30:33,774 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:30:33,817 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e2ad70b9-2c6b-4001-a3d3-4bb7af19c6f2/bin-2019/uautomizer/witness.graphml [2018-11-18 17:30:33,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:30:33,818 INFO L168 Benchmark]: Toolchain (without parser) took 2262.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -60.7 MB). Peak memory consumption was 93.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:33,820 INFO L168 Benchmark]: CDTParser took 0.20 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 17:30:33,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.08 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 932.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:33,820 INFO L168 Benchmark]: Boogie Preprocessor took 45.40 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:30:33,821 INFO L168 Benchmark]: RCFGBuilder took 451.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:33,821 INFO L168 Benchmark]: TraceAbstraction took 1489.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:33,821 INFO L168 Benchmark]: Witness Printer took 46.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:30:33,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 226.08 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 932.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.40 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 451.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1489.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. * Witness Printer took 46.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 86]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=0.000000000000000000000000000000000000000000007006492321624085, one_modf=1.0] [L80] float x = 0.0f / 0.0f; [L81] FCALL float iptr; VAL [iptr={2:0}, one_modf=1.0, x=NaN] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=NaN, iptr={2:0}, one_modf=1.0] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=NaN, iptr={2:0}, iptr={2:0}, one_modf=1.0, x=NaN] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (i0) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, one_modf=1.0, x=NaN] [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L22] COND FALSE !(j0 < 23) [L56] __uint32_t ix; [L57] FCALL *iptr = x * one_modf VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L59] FCALL ieee_float_shape_type gf_u; [L60] FCALL gf_u.value = (x) [L61] EXPR, FCALL gf_u.word [L61] (ix) = gf_u.word [L62] COND FALSE !(0) VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=NaN] [L64] FCALL ieee_float_shape_type sf_u; [L65] FCALL sf_u.word = (ix & 0x80000000) [L66] EXPR, FCALL sf_u.value [L66] (x) = sf_u.value [L67] COND FALSE !(0) VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=0.0] [L68] RET return x; VAL [\old(x)=NaN, \result=0.0, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=0.0] [L82] EXPR modf_float(x, &iptr) VAL [iptr={2:0}, modf_float(x, &iptr)=0.0, one_modf=1.0, x=NaN] [L82] float res = modf_float(x, &iptr); [L85] EXPR, FCALL \read(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=NaN, one_modf=1.0] [L73] RET return x != x; VAL [\old(x)=NaN, \result=1, one_modf=1.0, x=NaN] [L85] EXPR isnan_float(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=0.0, one_modf=1.0] [L73] RET return x != x; VAL [\old(x)=0.0, \result=0, one_modf=1.0, x=0.0] [L85] EXPR isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 87 SDslu, 137 SDs, 0 SdLazy, 53 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 7 QuantifiedInterpolants, 6064 SizeOfPredicates, 4 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...