./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0610_true-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_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0610_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95131fbb90a45f134b236581750b2f1a3cba4d8c ................................................................................................................................................................................................................................................................................................................................................................... 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_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0610_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95131fbb90a45f134b236581750b2f1a3cba4d8c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:01:38,305 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:01:38,307 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:01:38,315 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:01:38,315 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:01:38,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:01:38,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:01:38,323 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:01:38,324 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:01:38,327 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:01:38,328 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:01:38,328 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:01:38,329 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:01:38,330 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:01:38,331 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:01:38,331 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:01:38,333 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:01:38,334 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:01:38,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:01:38,337 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:01:38,338 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:01:38,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:01:38,341 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:01:38,341 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:01:38,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:01:38,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:01:38,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:01:38,343 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:01:38,344 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:01:38,345 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:01:38,345 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:01:38,346 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:01:38,346 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:01:38,346 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:01:38,347 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:01:38,348 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:01:38,349 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:01:38,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:01:38,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:01:38,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:01:38,362 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:01:38,362 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:01:38,362 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:01:38,362 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:01:38,362 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:01:38,362 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:01:38,362 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:01:38,363 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:01:38,363 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:01:38,363 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:01:38,363 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:01:38,365 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:01:38,366 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:01:38,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:01:38,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:01:38,367 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan 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 -> Taipan 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 -> 95131fbb90a45f134b236581750b2f1a3cba4d8c [2018-11-18 12:01:38,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:01:38,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:01:38,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:01:38,411 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:01:38,411 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:01:38,412 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-11-18 12:01:38,464 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/60a67d7bf/89f23ef62048403f802d0001b5129f43/FLAG1408f86e5 [2018-11-18 12:01:38,819 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:01:38,819 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/sv-benchmarks/c/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-11-18 12:01:38,824 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/60a67d7bf/89f23ef62048403f802d0001b5129f43/FLAG1408f86e5 [2018-11-18 12:01:38,837 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/60a67d7bf/89f23ef62048403f802d0001b5129f43 [2018-11-18 12:01:38,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:01:38,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:01:38,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:01:38,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:01:38,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:01:38,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:01:38" (1/1) ... [2018-11-18 12:01:38,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c50298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:38, skipping insertion in model container [2018-11-18 12:01:38,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:01:38" (1/1) ... [2018-11-18 12:01:38,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:01:38,878 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:01:39,058 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:01:39,069 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:01:39,100 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:01:39,119 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:01:39,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39 WrapperNode [2018-11-18 12:01:39,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:01:39,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:01:39,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:01:39,120 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:01:39,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:01:39,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:01:39,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:01:39,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:01:39,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... [2018-11-18 12:01:39,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:01:39,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:01:39,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:01:39,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:01:39,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/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 12:01:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:01:39,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:01:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 12:01:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 12:01:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:01:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 12:01:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 12:01:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:01:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:01:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 12:01:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-18 12:01:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-18 12:01:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:01:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:01:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:01:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:01:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-11-18 12:01:39,258 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-11-18 12:01:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:01:39,588 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:01:39,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:01:39 BoogieIcfgContainer [2018-11-18 12:01:39,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:01:39,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:01:39,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:01:39,591 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:01:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:01:38" (1/3) ... [2018-11-18 12:01:39,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1346b283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:01:39, skipping insertion in model container [2018-11-18 12:01:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:39" (2/3) ... [2018-11-18 12:01:39,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1346b283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:01:39, skipping insertion in model container [2018-11-18 12:01:39,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:01:39" (3/3) ... [2018-11-18 12:01:39,594 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610_true-unreach-call.c [2018-11-18 12:01:39,602 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:01:39,608 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:01:39,620 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:01:39,646 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:01:39,646 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:01:39,646 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:01:39,646 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:01:39,646 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:01:39,647 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:01:39,647 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:01:39,647 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:01:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-18 12:01:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:01:39,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:01:39,667 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] [2018-11-18 12:01:39,672 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:01:39,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:01:39,677 INFO L82 PathProgramCache]: Analyzing trace with hash 302216928, now seen corresponding path program 1 times [2018-11-18 12:01:39,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:01:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:01:39,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:01:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:01:39,710 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:01:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:01:39,810 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 12:01:39,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:01:39,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:01:39,812 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:01:39,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:01:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:01:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:01:39,829 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-11-18 12:01:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:01:39,847 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2018-11-18 12:01:39,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:01:39,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 12:01:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:01:39,863 INFO L225 Difference]: With dead ends: 92 [2018-11-18 12:01:39,863 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 12:01:39,866 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 12:01:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 12:01:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-18 12:01:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 12:01:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-11-18 12:01:39,894 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 22 [2018-11-18 12:01:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:01:39,894 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-11-18 12:01:39,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:01:39,894 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-11-18 12:01:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:01:39,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:01:39,895 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] [2018-11-18 12:01:39,896 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:01:39,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:01:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1861643029, now seen corresponding path program 1 times [2018-11-18 12:01:39,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:01:39,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:01:39,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:01:39,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:01:39,898 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:01:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:01:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:01:40,010 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:01:40,032 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 55 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 12:01:40,033 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 57 could not be translated for associated CType ARRAY#_11_~FLOAT# [2018-11-18 12:01:40,033 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 69 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 12:01:40,033 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 61 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 12:01:40,034 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 53 could not be translated for associated CType ARRAY#_11_~FLOAT# [2018-11-18 12:01:40,034 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 49 could not be translated for associated CType ARRAY#_4_~FLOAT# [2018-11-18 12:01:40,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:01:40 BoogieIcfgContainer [2018-11-18 12:01:40,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:01:40,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:01:40,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:01:40,045 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:01:40,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:01:39" (3/4) ... [2018-11-18 12:01:40,049 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:01:40,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:01:40,049 INFO L168 Benchmark]: Toolchain (without parser) took 1208.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 959.8 MB in the beginning and 1.0 GB in the end (delta: -72.3 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:01:40,051 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:01:40,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.31 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 943.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:01:40,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:01:40,052 INFO L168 Benchmark]: Boogie Preprocessor took 29.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:01:40,052 INFO L168 Benchmark]: RCFGBuilder took 373.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:01:40,052 INFO L168 Benchmark]: TraceAbstraction took 455.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:01:40,053 INFO L168 Benchmark]: Witness Printer took 3.99 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:01:40,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.31 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 943.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 373.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 455.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.99 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 55 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 57 could not be translated for associated CType ARRAY#_11_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 69 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 61 could not be translated for associated CType ARRAY#_4_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 53 could not be translated for associated CType ARRAY#_11_~FLOAT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 49 could not be translated for associated CType ARRAY#_4_~FLOAT# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 132]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 65, overapproximation of someBinaryArithmeticFLOAToperation at line 68. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L32-L37] FCALL static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L39-L44] FCALL static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L46-L50] FCALL static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L52-L54] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [\old(aT_atan)=null, \old(aT_atan)=null, \old(atanhi_atan)=null, \old(atanhi_atan)=null, \old(atanlo_atan)=null, \old(atanlo_atan)=null, \old(huge_atan)=67, \old(huge_floor)=62, \old(one_atan)=58, \old(pi)=63, \old(pi_o_2)=45, \old(pi_o_4)=60, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L127] float x = 0.0f / 0.0f; VAL [aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L128] CALL, EXPR atan_float(x) VAL [\old(x)=48, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L57] float w, s1, s2, z; [L58] __int32_t ix, hx, id; VAL [\old(x)=48, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=48] [L61] FCALL ieee_float_shape_type gf_u; [L62] FCALL gf_u.value = (x) [L63] EXPR, FCALL gf_u.word [L63] (hx) = gf_u.word [L64] COND FALSE !(0) VAL [\old(x)=48, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=3, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=48] [L65] ix = hx & 0x7fffffff VAL [\old(x)=48, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=3, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=48] [L66] COND TRUE ix >= 0x50800000 VAL [\old(x)=48, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=3, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=48] [L67] COND TRUE ((ix) > 0x7f800000L) [L68] RET return x + x; VAL [\old(x)=48, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=3, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=48] [L128] EXPR atan_float(x) VAL [aT_atan={54:0}, atan_float(x)=52, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=48] [L128] float res = atan_float(x); [L131] CALL, EXPR isnan_float(res) VAL [\old(x)=52, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L15] RET return x != x; VAL [\old(x)=52, \result=0, aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=52] [L131] EXPR isnan_float(res) VAL [aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, isnan_float(res)=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=52, x=48] [L131] COND TRUE !isnan_float(res) [L132] __VERIFIER_error() VAL [aT_atan={54:0}, atanhi_atan={56:0}, atanlo_atan={46:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=52, x=48] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 12:01:41,846 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:01:41,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:01:41,855 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:01:41,856 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:01:41,858 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:01:41,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:01:41,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:01:41,865 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:01:41,868 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:01:41,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:01:41,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:01:41,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:01:41,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:01:41,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:01:41,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:01:41,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:01:41,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:01:41,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:01:41,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:01:41,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:01:41,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:01:41,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:01:41,892 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:01:41,892 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:01:41,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:01:41,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:01:41,894 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:01:41,894 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:01:41,895 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:01:41,895 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:01:41,897 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:01:41,898 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:01:41,901 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:01:41,902 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:01:41,902 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:01:41,903 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 12:01:41,913 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:01:41,913 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:01:41,914 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:01:41,914 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:01:41,914 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:01:41,914 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:01:41,914 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:01:41,915 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:01:41,915 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:01:41,915 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:01:41,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:01:41,916 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:01:41,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:01:41,917 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:01:41,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:01:41,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:01:41,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:01:41,919 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:01:41,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:01:41,919 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:01:41,919 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:01:41,919 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_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan 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 -> Taipan 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 -> 95131fbb90a45f134b236581750b2f1a3cba4d8c [2018-11-18 12:01:41,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:01:41,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:01:41,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:01:41,973 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:01:41,973 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:01:41,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-11-18 12:01:42,021 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/7278b792b/cb4862be70ed4c20ad61e9f8f2e84f89/FLAGf1c240129 [2018-11-18 12:01:42,365 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:01:42,365 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/sv-benchmarks/c/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-11-18 12:01:42,370 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/7278b792b/cb4862be70ed4c20ad61e9f8f2e84f89/FLAGf1c240129 [2018-11-18 12:01:42,382 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/data/7278b792b/cb4862be70ed4c20ad61e9f8f2e84f89 [2018-11-18 12:01:42,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:01:42,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:01:42,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:01:42,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:01:42,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:01:42,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676eda12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42, skipping insertion in model container [2018-11-18 12:01:42,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:01:42,420 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:01:42,604 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:01:42,614 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:01:42,658 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:01:42,687 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:01:42,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42 WrapperNode [2018-11-18 12:01:42,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:01:42,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:01:42,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:01:42,688 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:01:42,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:01:42,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:01:42,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:01:42,713 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:01:42,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... [2018-11-18 12:01:42,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:01:42,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:01:42,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:01:42,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:01:42,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/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 12:01:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:01:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:01:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 12:01:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 12:01:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 12:01:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:01:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:01:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-18 12:01:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-18 12:01:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:01:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-11-18 12:01:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 12:01:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:01:43,545 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:01:43,566 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:01:53,358 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:01:53,371 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:01:53,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:01:53 BoogieIcfgContainer [2018-11-18 12:01:53,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:01:53,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:01:53,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:01:53,374 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:01:53,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:01:42" (1/3) ... [2018-11-18 12:01:53,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a37e021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:01:53, skipping insertion in model container [2018-11-18 12:01:53,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:01:42" (2/3) ... [2018-11-18 12:01:53,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a37e021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:01:53, skipping insertion in model container [2018-11-18 12:01:53,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:01:53" (3/3) ... [2018-11-18 12:01:53,376 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610_true-unreach-call.c [2018-11-18 12:01:53,381 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:01:53,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:01:53,396 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:01:53,415 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:01:53,415 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:01:53,415 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:01:53,415 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:01:53,415 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:01:53,415 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:01:53,416 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:01:53,416 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:01:53,416 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:01:53,427 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-18 12:01:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:01:53,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:01:53,433 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] [2018-11-18 12:01:53,434 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:01:53,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:01:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash 916478181, now seen corresponding path program 1 times [2018-11-18 12:01:53,440 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:01:53,441 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/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 12:01:53,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:01:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:01:53,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:01:53,591 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 12:01:53,591 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:01:53,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:01:53,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:01:53,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:01:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:01:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:01:53,613 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-18 12:01:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:01:53,633 INFO L93 Difference]: Finished difference Result 90 states and 125 transitions. [2018-11-18 12:01:53,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:01:53,634 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 12:01:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:01:53,643 INFO L225 Difference]: With dead ends: 90 [2018-11-18 12:01:53,643 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 12:01:53,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 12:01:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 12:01:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-18 12:01:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 12:01:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-18 12:01:53,673 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 21 [2018-11-18 12:01:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:01:53,674 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 12:01:53,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:01:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2018-11-18 12:01:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:01:53,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:01:53,675 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] [2018-11-18 12:01:53,676 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:01:53,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:01:53,676 INFO L82 PathProgramCache]: Analyzing trace with hash -516222211, now seen corresponding path program 1 times [2018-11-18 12:01:53,677 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:01:53,677 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/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 12:01:53,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:01:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:01:53,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:01:54,350 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 12:01:54,350 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:01:54,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:01:54,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:01:54,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:01:54,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:01:54,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:01:54,366 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 9 states. [2018-11-18 12:01:54,860 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 12:02:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:02:06,091 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-11-18 12:02:06,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:02:06,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-18 12:02:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:02:06,094 INFO L225 Difference]: With dead ends: 55 [2018-11-18 12:02:06,094 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 12:02:06,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:02:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 12:02:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-18 12:02:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 12:02:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2018-11-18 12:02:06,103 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 22 [2018-11-18 12:02:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:02:06,104 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2018-11-18 12:02:06,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:02:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2018-11-18 12:02:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:02:06,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:02:06,106 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] [2018-11-18 12:02:06,106 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:02:06,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:02:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1808109440, now seen corresponding path program 1 times [2018-11-18 12:02:06,107 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:02:06,107 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/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 12:02:06,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:02:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:02:06,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:02:06,388 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 12:02:06,388 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:02:06,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:02:06,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:02:06,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:02:06,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:02:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:02:06,398 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 8 states. [2018-11-18 12:02:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:02:18,007 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-18 12:02:18,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:02:18,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-18 12:02:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:02:18,054 INFO L225 Difference]: With dead ends: 59 [2018-11-18 12:02:18,054 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 12:02:18,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:02:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 12:02:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-11-18 12:02:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:02:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-18 12:02:18,059 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 23 [2018-11-18 12:02:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:02:18,060 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-18 12:02:18,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:02:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-18 12:02:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 12:02:18,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:02:18,061 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] [2018-11-18 12:02:18,061 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:02:18,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:02:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1679542394, now seen corresponding path program 1 times [2018-11-18 12:02:18,062 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:02:18,062 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/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 12:02:18,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:02:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:02:18,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:02:18,263 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 12:02:18,263 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:02:18,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:02:18,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:02:18,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:02:18,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:02:18,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:02:18,275 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2018-11-18 12:02:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:02:27,235 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-11-18 12:02:27,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:02:27,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-18 12:02:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:02:27,281 INFO L225 Difference]: With dead ends: 55 [2018-11-18 12:02:27,281 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 12:02:27,281 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:02:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 12:02:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-11-18 12:02:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:02:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-18 12:02:27,285 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 24 [2018-11-18 12:02:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:02:27,285 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-18 12:02:27,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:02:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-18 12:02:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:02:27,286 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:02:27,286 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] [2018-11-18 12:02:27,287 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:02:27,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:02:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash -625107464, now seen corresponding path program 1 times [2018-11-18 12:02:27,287 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:02:27,287 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 12:02:27,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:02:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:02:28,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:02:28,393 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 12:02:28,393 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:02:28,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:02:28,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:02:28,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:02:28,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:02:28,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:02:28,411 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 7 states. [2018-11-18 12:02:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:02:37,315 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-18 12:02:37,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:02:37,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-18 12:02:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:02:37,360 INFO L225 Difference]: With dead ends: 44 [2018-11-18 12:02:37,360 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:02:37,361 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:02:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:02:37,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:02:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:02:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:02:37,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-11-18 12:02:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:02:37,362 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:02:37,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:02:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:02:37,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:02:37,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:02:37,442 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 15) no Hoare annotation was computed. [2018-11-18 12:02:37,442 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 15) the Hoare annotation is: true [2018-11-18 12:02:37,442 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 15) no Hoare annotation was computed. [2018-11-18 12:02:37,442 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:02:37,442 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:02:37,442 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:02:37,442 INFO L425 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 17 30) no Hoare annotation was computed. [2018-11-18 12:02:37,442 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2018-11-18 12:02:37,443 INFO L428 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: true [2018-11-18 12:02:37,443 INFO L425 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 17 30) no Hoare annotation was computed. [2018-11-18 12:02:37,443 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 28) no Hoare annotation was computed. [2018-11-18 12:02:37,443 INFO L428 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 17 30) the Hoare annotation is: true [2018-11-18 12:02:37,443 INFO L425 ceAbstractionStarter]: For program point L24-2(lines 17 30) no Hoare annotation was computed. [2018-11-18 12:02:37,443 INFO L425 ceAbstractionStarter]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2018-11-18 12:02:37,443 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:02:37,443 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:02:37,443 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:02:37,443 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:02:37,444 INFO L421 ceAbstractionStarter]: At program point L128(line 128) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2018-11-18 12:02:37,444 INFO L425 ceAbstractionStarter]: For program point L128-1(line 128) no Hoare annotation was computed. [2018-11-18 12:02:37,444 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 120 137) the Hoare annotation is: true [2018-11-18 12:02:37,444 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 120 137) no Hoare annotation was computed. [2018-11-18 12:02:37,444 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 132) no Hoare annotation was computed. [2018-11-18 12:02:37,444 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 120 137) no Hoare annotation was computed. [2018-11-18 12:02:37,444 INFO L425 ceAbstractionStarter]: For program point L132(line 132) no Hoare annotation was computed. [2018-11-18 12:02:37,444 INFO L421 ceAbstractionStarter]: At program point L131(line 131) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 (fp.add roundNearestTiesToEven .cse0 .cse0)) (= main_~x~0 .cse0))) [2018-11-18 12:02:37,445 INFO L425 ceAbstractionStarter]: For program point L131-1(lines 131 134) no Hoare annotation was computed. [2018-11-18 12:02:37,445 INFO L428 ceAbstractionStarter]: At program point atan_floatENTRY(lines 56 118) the Hoare annotation is: true [2018-11-18 12:02:37,445 INFO L425 ceAbstractionStarter]: For program point atan_floatFINAL(lines 56 118) no Hoare annotation was computed. [2018-11-18 12:02:37,445 INFO L425 ceAbstractionStarter]: For program point L60-1(lines 60 64) no Hoare annotation was computed. [2018-11-18 12:02:37,445 INFO L421 ceAbstractionStarter]: At program point L60-3(lines 60 64) the Hoare annotation is: (= |atan_float_#in~x| atan_float_~x) [2018-11-18 12:02:37,445 INFO L425 ceAbstractionStarter]: For program point L60-4(lines 60 64) no Hoare annotation was computed. [2018-11-18 12:02:37,445 INFO L421 ceAbstractionStarter]: At program point L81(line 81) the Hoare annotation is: (and (exists ((atan_float_~hx~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) atan_float_~hx~0) ((_ extract 30 23) atan_float_~hx~0) ((_ extract 22 0) atan_float_~hx~0)) |atan_float_#in~x|) (= (bvand (_ bv2147483647 32) atan_float_~hx~0) atan_float_~ix~1))) (= (fp ((_ extract 31 31) atan_float_~hx~0) ((_ extract 30 23) atan_float_~hx~0) ((_ extract 22 0) atan_float_~hx~0)) |atan_float_#in~x|) (exists ((atan_float_~hx~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) atan_float_~hx~0) ((_ extract 30 23) atan_float_~hx~0) ((_ extract 22 0) atan_float_~hx~0)) |atan_float_#in~x|) (not (bvsge (bvand (_ bv2147483647 32) atan_float_~hx~0) (_ bv1350565888 32))))) (= |atan_float_#in~x| atan_float_~x)) [2018-11-18 12:02:37,445 INFO L425 ceAbstractionStarter]: For program point L81-1(line 81) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L69(lines 69 72) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L82(lines 82 98) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L74(lines 74 99) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L66(lines 66 73) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L91(lines 91 97) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L91-2(lines 74 99) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L116(line 116) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L83(lines 83 89) no Hoare annotation was computed. [2018-11-18 12:02:37,446 INFO L425 ceAbstractionStarter]: For program point L116-2(line 116) no Hoare annotation was computed. [2018-11-18 12:02:37,447 INFO L425 ceAbstractionStarter]: For program point L112(lines 112 117) no Hoare annotation was computed. [2018-11-18 12:02:37,447 INFO L425 ceAbstractionStarter]: For program point L75(lines 75 78) no Hoare annotation was computed. [2018-11-18 12:02:37,447 INFO L425 ceAbstractionStarter]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2018-11-18 12:02:37,447 INFO L425 ceAbstractionStarter]: For program point L67(lines 67 68) no Hoare annotation was computed. [2018-11-18 12:02:37,447 INFO L425 ceAbstractionStarter]: For program point atan_floatEXIT(lines 56 118) no Hoare annotation was computed. [2018-11-18 12:02:37,447 INFO L425 ceAbstractionStarter]: For program point L76(lines 76 77) no Hoare annotation was computed. [2018-11-18 12:02:37,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:02:37 BoogieIcfgContainer [2018-11-18 12:02:37,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:02:37,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:02:37,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:02:37,457 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:02:37,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:01:53" (3/4) ... [2018-11-18 12:02:37,459 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:02:37,463 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 12:02:37,464 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:02:37,464 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-11-18 12:02:37,464 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:02:37,464 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure atan_float [2018-11-18 12:02:37,469 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2018-11-18 12:02:37,469 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 12:02:37,469 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 12:02:37,469 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:02:37,488 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 12:02:37,513 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_23952341-6f66-4814-9b51-aa3f206de27e/bin-2019/utaipan/witness.graphml [2018-11-18 12:02:37,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:02:37,514 INFO L168 Benchmark]: Toolchain (without parser) took 55129.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 953.2 MB in the beginning and 897.4 MB in the end (delta: 55.8 MB). Peak memory consumption was 219.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,514 INFO L168 Benchmark]: CDTParser took 0.14 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 12:02:37,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.32 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.31 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,515 INFO L168 Benchmark]: Boogie Preprocessor took 86.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -220.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,515 INFO L168 Benchmark]: RCFGBuilder took 10572.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,515 INFO L168 Benchmark]: TraceAbstraction took 44084.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.0 MB in the end (delta: 207.9 MB). Peak memory consumption was 207.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,516 INFO L168 Benchmark]: Witness Printer took 56.43 ms. Allocated memory is still 1.2 GB. Free memory was 904.0 MB in the beginning and 897.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:02:37,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.32 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.31 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -220.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 10572.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 44084.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.0 MB in the end (delta: 207.9 MB). Peak memory consumption was 207.9 MB. Max. memory is 11.5 GB. * Witness Printer took 56.43 ms. Allocated memory is still 1.2 GB. Free memory was 904.0 MB in the beginning and 897.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 132]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. SAFE Result, 44.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 41.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 199 SDtfs, 192 SDslu, 667 SDs, 0 SdLazy, 252 SolverSat, 14 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 38.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 82 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 111 ConstructedInterpolants, 19 QuantifiedInterpolants, 13326 SizeOfPredicates, 16 NumberOfNonLiveVariables, 593 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...