./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 .................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 23:44:30,884 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:44:30,885 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:44:30,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:44:30,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:44:30,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:44:30,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:44:30,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:44:30,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:44:30,895 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:44:30,896 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:44:30,896 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:44:30,896 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:44:30,897 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:44:30,898 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:44:30,898 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:44:30,899 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:44:30,900 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:44:30,901 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:44:30,902 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:44:30,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:44:30,903 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:44:30,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:44:30,904 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:44:30,904 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:44:30,905 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:44:30,905 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:44:30,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:44:30,906 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:44:30,907 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:44:30,907 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:44:30,907 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:44:30,907 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:44:30,908 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:44:30,908 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:44:30,908 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:44:30,909 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 23:44:30,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:44:30,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:44:30,917 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 23:44:30,917 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 23:44:30,917 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 23:44:30,917 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 23:44:30,918 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 23:44:30,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 23:44:30,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 23:44:30,920 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 23:44:30,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:44:30,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:44:30,921 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 23:44:30,921 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 23:44:30,921 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 23:44:30,921 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 23:44:30,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 23:44:30,921 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 23:44:30,921 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_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-12-08 23:44:30,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:44:30,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:44:30,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:44:30,950 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:44:30,950 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:44:30,951 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-12-08 23:44:30,991 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/98f8d2460/583c91e075c045689bf21f31c3ed2a25/FLAGd08cd1fed [2018-12-08 23:44:31,308 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:44:31,308 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-12-08 23:44:31,313 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/98f8d2460/583c91e075c045689bf21f31c3ed2a25/FLAGd08cd1fed [2018-12-08 23:44:31,322 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/98f8d2460/583c91e075c045689bf21f31c3ed2a25 [2018-12-08 23:44:31,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:44:31,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 23:44:31,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:44:31,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:44:31,328 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:44:31,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7faede09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31, skipping insertion in model container [2018-12-08 23:44:31,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:44:31,346 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:44:31,450 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:44:31,456 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:44:31,471 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:44:31,480 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:44:31,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31 WrapperNode [2018-12-08 23:44:31,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:44:31,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 23:44:31,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 23:44:31,481 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 23:44:31,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 23:44:31,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:44:31,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:44:31,496 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:44:31,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... [2018-12-08 23:44:31,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:44:31,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:44:31,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:44:31,547 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:44:31,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 [2018-12-08 23:44:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-08 23:44:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-08 23:44:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 23:44:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:44:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 23:44:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 23:44:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 23:44:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 23:44:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-12-08 23:44:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-12-08 23:44:31,778 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:44:31,778 INFO L280 CfgBuilder]: Removed 14 assue(true) statements. [2018-12-08 23:44:31,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:44:31 BoogieIcfgContainer [2018-12-08 23:44:31,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:44:31,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 23:44:31,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 23:44:31,781 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 23:44:31,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 11:44:31" (1/3) ... [2018-12-08 23:44:31,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a02f0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:44:31, skipping insertion in model container [2018-12-08 23:44:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:31" (2/3) ... [2018-12-08 23:44:31,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a02f0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:44:31, skipping insertion in model container [2018-12-08 23:44:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:44:31" (3/3) ... [2018-12-08 23:44:31,783 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-12-08 23:44:31,789 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 23:44:31,793 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 23:44:31,803 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 23:44:31,821 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 23:44:31,821 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 23:44:31,821 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 23:44:31,821 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:44:31,821 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:44:31,821 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 23:44:31,821 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:44:31,821 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 23:44:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-08 23:44:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 23:44:31,834 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:31,835 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:31,836 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:31,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:31,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2018-12-08 23:44:31,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 23:44:31,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:44:31,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:31,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:44:31,869 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 23:44:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:44:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:44:31,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:44:31,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 23:44:31,920 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 23:44:31,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 23:44:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 23:44:31,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 23:44:31,932 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-12-08 23:44:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:44:31,945 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-12-08 23:44:31,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 23:44:31,946 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-12-08 23:44:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:44:31,951 INFO L225 Difference]: With dead ends: 88 [2018-12-08 23:44:31,951 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 23:44:31,953 INFO L631 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 [2018-12-08 23:44:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 23:44:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 23:44:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 23:44:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-12-08 23:44:31,977 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-12-08 23:44:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:44:31,977 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-12-08 23:44:31,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 23:44:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-12-08 23:44:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 23:44:31,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:31,978 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:31,979 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:31,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2018-12-08 23:44:31,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 23:44:31,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:44:31,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:31,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:44:31,980 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 23:44:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:44:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:44:32,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:44:32,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:44:32,028 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 23:44:32,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 23:44:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 23:44:32,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:44:32,029 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 3 states. [2018-12-08 23:44:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:44:32,041 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-12-08 23:44:32,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 23:44:32,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-12-08 23:44:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:44:32,042 INFO L225 Difference]: With dead ends: 47 [2018-12-08 23:44:32,042 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 23:44:32,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:44:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 23:44:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 23:44:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 23:44:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-12-08 23:44:32,046 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2018-12-08 23:44:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:44:32,047 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-12-08 23:44:32,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 23:44:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-12-08 23:44:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 23:44:32,048 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:32,048 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:32,048 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:32,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:32,048 INFO L82 PathProgramCache]: Analyzing trace with hash -425385736, now seen corresponding path program 1 times [2018-12-08 23:44:32,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 23:44:32,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:44:32,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:32,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:44:32,049 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 23:44:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:44:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:44:32,097 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 23:44:32,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 11:44:32 BoogieIcfgContainer [2018-12-08 23:44:32,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 23:44:32,118 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:44:32,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:44:32,118 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:44:32,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:44:31" (3/4) ... [2018-12-08 23:44:32,120 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 23:44:32,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:44:32,121 INFO L168 Benchmark]: Toolchain (without parser) took 796.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -94.0 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:32,122 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-08 23:44:32,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.37 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:32,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.90 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 941.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:32,122 INFO L168 Benchmark]: Boogie Preprocessor took 51.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:32,123 INFO L168 Benchmark]: RCFGBuilder took 231.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:32,123 INFO L168 Benchmark]: TraceAbstraction took 338.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:32,123 INFO L168 Benchmark]: Witness Printer took 2.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:44:32,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 154.37 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.90 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 941.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 231.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 338.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=6442450950, one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] float iptr; VAL [iptr={6442450955:0}, one_modf=1] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=6442450947, iptr={6442450955:0}, one_modf=1] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=6442450947, iptr={6442450955:0}, iptr={6442450955:0}, one_modf=1, x=6442450947] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, one_modf=1, x=6442450947] [L22] COND TRUE j0 < 23 VAL [\old(x)=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, j0=-1, one_modf=1, x=6442450947] [L23] COND TRUE j0 < 0 VAL [\old(x)=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, j0=-1, one_modf=1, x=6442450947] [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; VAL [\old(x)=6442450947, \result=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, j0=-1, one_modf=1, x=6442450947] [L82] RET, EXPR modf_float(x, &iptr) VAL [iptr={6442450955:0}, modf_float(x, &iptr)=6442450947, one_modf=1, x=6442450947] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, one_modf=1, res=6442450947, x=6442450947] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=6442450954, one_modf=1] [L73] return x != x; VAL [\old(x)=6442450954, \result=1, one_modf=1, x=6442450954] [L85] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, one_modf=1, res=6442450947, x=6442450947] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=6442450947, x=6442450947] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=6442450947, one_modf=1] [L73] return x != x; VAL [\old(x)=6442450947, \result=0, one_modf=1, x=6442450947] [L85] RET, EXPR isnan_float(res) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=6442450947, x=6442450947] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=6442450947, x=6442450947] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={6442450955:0}, one_modf=1, res=6442450947, x=6442450947] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 23:44:33,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:44:33,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:44:33,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:44:33,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:44:33,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:44:33,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:44:33,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:44:33,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:44:33,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:44:33,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:44:33,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:44:33,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:44:33,540 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:44:33,541 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:44:33,541 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:44:33,542 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:44:33,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:44:33,544 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:44:33,545 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:44:33,545 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:44:33,546 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:44:33,547 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:44:33,547 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:44:33,547 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:44:33,548 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:44:33,548 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:44:33,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:44:33,549 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:44:33,550 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:44:33,550 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:44:33,550 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:44:33,550 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:44:33,550 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:44:33,551 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:44:33,551 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:44:33,551 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 23:44:33,560 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:44:33,560 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:44:33,561 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 23:44:33,561 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 23:44:33,561 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 23:44:33,562 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 23:44:33,562 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 23:44:33,562 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 23:44:33,562 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 23:44:33,562 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 23:44:33,563 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:44:33,563 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 23:44:33,563 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 23:44:33,563 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:44:33,563 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 23:44:33,563 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 23:44:33,563 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 23:44:33,564 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 23:44:33,564 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 23:44:33,564 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 23:44:33,564 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 23:44:33,564 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 23:44:33,564 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 23:44:33,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:44:33,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 23:44:33,565 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 23:44:33,566 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 23:44:33,566 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 23:44:33,566 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 23:44:33,566 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_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-12-08 23:44:33,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:44:33,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:44:33,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:44:33,601 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:44:33,601 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:44:33,601 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-12-08 23:44:33,639 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/f62f927a7/3141cef81aa64537befb05e2fece3df1/FLAGec65a3bd3 [2018-12-08 23:44:33,991 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:44:33,991 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-12-08 23:44:33,995 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/f62f927a7/3141cef81aa64537befb05e2fece3df1/FLAGec65a3bd3 [2018-12-08 23:44:34,373 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/data/f62f927a7/3141cef81aa64537befb05e2fece3df1 [2018-12-08 23:44:34,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:44:34,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 23:44:34,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:44:34,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:44:34,380 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:44:34,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373aa269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34, skipping insertion in model container [2018-12-08 23:44:34,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:44:34,400 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:44:34,500 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:44:34,509 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:44:34,530 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:44:34,540 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:44:34,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34 WrapperNode [2018-12-08 23:44:34,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:44:34,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 23:44:34,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 23:44:34,541 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 23:44:34,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 23:44:34,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:44:34,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:44:34,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:44:34,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... [2018-12-08 23:44:34,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:44:34,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:44:34,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:44:34,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:44:34,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 [2018-12-08 23:44:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-08 23:44:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-08 23:44:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 23:44:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 23:44:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 23:44:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 23:44:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:44:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:44:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-08 23:44:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 23:44:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 23:44:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-08 23:44:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-08 23:44:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 23:44:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-12-08 23:44:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-12-08 23:44:34,763 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,791 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,800 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,878 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,889 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,899 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,914 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:44:34,917 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:44:34,917 INFO L280 CfgBuilder]: Removed 14 assue(true) statements. [2018-12-08 23:44:34,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:44:34 BoogieIcfgContainer [2018-12-08 23:44:34,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:44:34,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 23:44:34,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 23:44:34,920 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 23:44:34,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 11:44:34" (1/3) ... [2018-12-08 23:44:34,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31469661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:44:34, skipping insertion in model container [2018-12-08 23:44:34,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:44:34" (2/3) ... [2018-12-08 23:44:34,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31469661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:44:34, skipping insertion in model container [2018-12-08 23:44:34,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:44:34" (3/3) ... [2018-12-08 23:44:34,922 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-12-08 23:44:34,928 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 23:44:34,932 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 23:44:34,943 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 23:44:34,961 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 23:44:34,961 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 23:44:34,961 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 23:44:34,961 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 23:44:34,962 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:44:34,962 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:44:34,962 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 23:44:34,962 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:44:34,962 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 23:44:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-08 23:44:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 23:44:34,975 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:34,975 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:34,976 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:34,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2018-12-08 23:44:34,982 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:44:34,982 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 [2018-12-08 23:44:34,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:44:35,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:44:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:44:35,084 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:44:35,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:44:35,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 23:44:35,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 23:44:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 23:44:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 23:44:35,104 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-12-08 23:44:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:44:35,120 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-12-08 23:44:35,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 23:44:35,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-12-08 23:44:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:44:35,128 INFO L225 Difference]: With dead ends: 88 [2018-12-08 23:44:35,128 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 23:44:35,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 23:44:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 23:44:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 23:44:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 23:44:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-12-08 23:44:35,160 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-12-08 23:44:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:44:35,161 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-12-08 23:44:35,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 23:44:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-12-08 23:44:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 23:44:35,162 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:35,162 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:35,163 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:35,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:35,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2018-12-08 23:44:35,163 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:44:35,163 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 [2018-12-08 23:44:35,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:44:35,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:44:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:44:35,320 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:44:35,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:44:35,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 23:44:35,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 23:44:35,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 23:44:35,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-08 23:44:35,333 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 7 states. [2018-12-08 23:44:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:44:35,927 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-12-08 23:44:35,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 23:44:35,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-12-08 23:44:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:44:35,929 INFO L225 Difference]: With dead ends: 60 [2018-12-08 23:44:35,929 INFO L226 Difference]: Without dead ends: 31 [2018-12-08 23:44:35,930 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-12-08 23:44:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-08 23:44:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-08 23:44:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-08 23:44:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-12-08 23:44:35,935 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2018-12-08 23:44:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:44:35,935 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-12-08 23:44:35,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 23:44:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-12-08 23:44:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-08 23:44:35,936 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:35,936 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:35,937 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:35,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:35,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2040204428, now seen corresponding path program 1 times [2018-12-08 23:44:35,937 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:44:35,937 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 [2018-12-08 23:44:35,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:44:36,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:44:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:44:36,022 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:44:36,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:44:36,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:44:36,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 23:44:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 23:44:36,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:44:36,035 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2018-12-08 23:44:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:44:36,041 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-12-08 23:44:36,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 23:44:36,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-12-08 23:44:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:44:36,042 INFO L225 Difference]: With dead ends: 34 [2018-12-08 23:44:36,042 INFO L226 Difference]: Without dead ends: 31 [2018-12-08 23:44:36,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:44:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-08 23:44:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-08 23:44:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-08 23:44:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-12-08 23:44:36,046 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-12-08 23:44:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:44:36,047 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-12-08 23:44:36,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 23:44:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-12-08 23:44:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 23:44:36,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:44:36,047 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:44:36,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:44:36,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:44:36,048 INFO L82 PathProgramCache]: Analyzing trace with hash 263973730, now seen corresponding path program 1 times [2018-12-08 23:44:36,048 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:44:36,048 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/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 [2018-12-08 23:44:36,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:44:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:44:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:44:36,305 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 23:44:36,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 11:44:36 BoogieIcfgContainer [2018-12-08 23:44:36,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 23:44:36,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:44:36,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:44:36,332 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:44:36,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:44:34" (3/4) ... [2018-12-08 23:44:36,334 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 23:44:36,366 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_573716f1-c626-4fbd-b838-ca3ba8e39f79/bin-2019/utaipan/witness.graphml [2018-12-08 23:44:36,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:44:36,367 INFO L168 Benchmark]: Toolchain (without parser) took 1990.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.4 MB in the beginning and 973.9 MB in the end (delta: -30.5 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:36,367 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:44:36,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.27 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:36,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.05 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:44:36,368 INFO L168 Benchmark]: Boogie Preprocessor took 23.40 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:44:36,368 INFO L168 Benchmark]: RCFGBuilder took 337.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:36,368 INFO L168 Benchmark]: TraceAbstraction took 1413.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.6 MB in the end (delta: 101.1 MB). Peak memory consumption was 101.1 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:36,369 INFO L168 Benchmark]: Witness Printer took 34.14 ms. Allocated memory is still 1.2 GB. Free memory was 980.6 MB in the beginning and 973.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:44:36,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.27 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 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 16.05 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.40 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 337.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1413.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.6 MB in the end (delta: 101.1 MB). Peak memory consumption was 101.1 MB. Max. memory is 11.5 GB. * Witness Printer took 34.14 ms. Allocated memory is still 1.2 GB. Free memory was 980.6 MB in the beginning and 973.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 86]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=0.000000000000000000000000000000000000000000007006492321624085, one_modf=1.0] [L80] float x = 0.0f / 0.0f; [L81] float iptr; VAL [iptr={2:0}, one_modf=1.0, x=NaN] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=NaN, iptr={2:0}, one_modf=1.0] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=NaN, iptr={2:0}, iptr={2:0}, one_modf=1.0, x=NaN] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L22] COND FALSE !(j0 < 23) [L56] __uint32_t ix; [L57] *iptr = x * one_modf VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L59] ieee_float_shape_type gf_u; [L60] gf_u.value = (x) [L61] EXPR gf_u.word [L61] (ix) = gf_u.word [L64] ieee_float_shape_type sf_u; [L65] sf_u.word = (ix & 0x80000000) [L66] EXPR sf_u.value [L66] (x) = sf_u.value [L68] return x; VAL [\old(x)=NaN, \result=0.0, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=0.0] [L82] RET, EXPR modf_float(x, &iptr) VAL [iptr={2:0}, modf_float(x, &iptr)=0.0, one_modf=1.0, x=NaN] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=NaN, one_modf=1.0] [L73] return x != x; VAL [\old(x)=NaN, \result=1, one_modf=1.0, x=NaN] [L85] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=0.0, one_modf=1.0] [L73] return x != x; VAL [\old(x)=0.0, \result=0, one_modf=1.0, x=0.0] [L85] RET, EXPR isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 87 SDslu, 137 SDs, 0 SdLazy, 53 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 7 QuantifiedInterpolants, 6064 SizeOfPredicates, 4 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...