./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_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_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ................................................................................................................................................................................................................................................................................................................................................................................................ 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_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:38:42,696 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 20:38:42,696 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 20:38:42,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 20:38:42,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 20:38:42,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 20:38:42,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 20:38:42,705 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 20:38:42,706 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 20:38:42,707 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 20:38:42,707 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 20:38:42,708 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 20:38:42,708 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 20:38:42,709 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 20:38:42,709 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 20:38:42,710 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 20:38:42,710 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 20:38:42,711 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 20:38:42,712 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 20:38:42,713 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 20:38:42,714 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 20:38:42,714 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 20:38:42,716 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 20:38:42,716 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 20:38:42,716 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 20:38:42,717 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 20:38:42,717 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 20:38:42,718 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 20:38:42,718 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 20:38:42,719 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 20:38:42,719 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 20:38:42,719 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 20:38:42,719 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 20:38:42,720 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 20:38:42,720 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 20:38:42,720 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 20:38:42,721 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 20:38:42,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 20:38:42,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 20:38:42,730 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 20:38:42,730 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 20:38:42,730 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 20:38:42,730 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 20:38:42,730 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 20:38:42,730 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 20:38:42,730 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 20:38:42,731 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 20:38:42,731 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 20:38:42,731 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 20:38:42,731 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 20:38:42,731 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 20:38:42,731 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 20:38:42,732 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 20:38:42,733 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 20:38:42,733 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 20:38:42,733 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 20:38:42,733 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 20:38:42,733 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 20:38:42,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 20:38:42,733 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 20:38:42,733 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 20:38:42,734 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 20:38:42,734 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 20:38:42,734 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 20:38:42,734 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 20:38:42,734 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 20:38:42,734 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_93e949ff-1afe-47b9-a673-3bf91f604f19/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-12-08 20:38:42,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 20:38:42,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 20:38:42,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 20:38:42,761 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 20:38:42,761 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 20:38:42,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 20:38:42,797 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/da3678441/0301e94e7f1041d296a556af75f57a21/FLAG56869336e [2018-12-08 20:38:43,166 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 20:38:43,167 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 20:38:43,171 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/da3678441/0301e94e7f1041d296a556af75f57a21/FLAG56869336e [2018-12-08 20:38:43,536 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/da3678441/0301e94e7f1041d296a556af75f57a21 [2018-12-08 20:38:43,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 20:38:43,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 20:38:43,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 20:38:43,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 20:38:43,554 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 20:38:43,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ab3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43, skipping insertion in model container [2018-12-08 20:38:43,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 20:38:43,584 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 20:38:43,676 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 20:38:43,678 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 20:38:43,693 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 20:38:43,704 INFO L195 MainTranslator]: Completed translation [2018-12-08 20:38:43,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43 WrapperNode [2018-12-08 20:38:43,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 20:38:43,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 20:38:43,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 20:38:43,705 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 20:38:43,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 20:38:43,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 20:38:43,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 20:38:43,720 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 20:38:43,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... [2018-12-08 20:38:43,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 20:38:43,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 20:38:43,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 20:38:43,767 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 20:38:43,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 20:38:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 20:38:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 20:38:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-08 20:38:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-08 20:38:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 20:38:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 20:38:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-08 20:38:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-08 20:38:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 20:38:43,941 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 20:38:43,942 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 20:38:43,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:43 BoogieIcfgContainer [2018-12-08 20:38:43,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 20:38:43,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 20:38:43,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 20:38:43,944 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 20:38:43,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 08:38:43" (1/3) ... [2018-12-08 20:38:43,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640ff869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:38:43, skipping insertion in model container [2018-12-08 20:38:43,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:43" (2/3) ... [2018-12-08 20:38:43,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640ff869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:38:43, skipping insertion in model container [2018-12-08 20:38:43,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:43" (3/3) ... [2018-12-08 20:38:43,946 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-12-08 20:38:43,952 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 20:38:43,957 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 20:38:43,968 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 20:38:43,987 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 20:38:43,987 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 20:38:43,987 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 20:38:43,987 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 20:38:43,987 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 20:38:43,987 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 20:38:43,988 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 20:38:43,988 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 20:38:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-08 20:38:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 20:38:44,002 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:44,002 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] [2018-12-08 20:38:44,004 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:44,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:44,007 INFO L82 PathProgramCache]: Analyzing trace with hash -278474869, now seen corresponding path program 1 times [2018-12-08 20:38:44,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 20:38:44,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:44,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,037 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 20:38:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:44,087 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 20:38:44,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:44,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 20:38:44,089 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 20:38:44,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 20:38:44,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 20:38:44,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 20:38:44,101 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-08 20:38:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:44,115 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-08 20:38:44,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 20:38:44,116 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-08 20:38:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:44,121 INFO L225 Difference]: With dead ends: 79 [2018-12-08 20:38:44,121 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 20:38:44,123 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 20:38:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 20:38:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-08 20:38:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 20:38:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-08 20:38:44,147 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-08 20:38:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:44,147 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-08 20:38:44,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 20:38:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-08 20:38:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 20:38:44,148 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:44,148 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] [2018-12-08 20:38:44,148 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:44,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash -428418178, now seen corresponding path program 1 times [2018-12-08 20:38:44,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 20:38:44,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:44,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,150 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 20:38:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:44,197 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 20:38:44,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:44,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 20:38:44,197 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 20:38:44,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 20:38:44,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 20:38:44,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:44,199 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-08 20:38:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:44,217 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-08 20:38:44,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 20:38:44,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-08 20:38:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:44,219 INFO L225 Difference]: With dead ends: 59 [2018-12-08 20:38:44,219 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 20:38:44,219 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 20:38:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 20:38:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 20:38:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 20:38:44,224 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-08 20:38:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:44,225 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 20:38:44,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 20:38:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 20:38:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 20:38:44,225 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:44,225 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] [2018-12-08 20:38:44,226 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:44,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 328113906, now seen corresponding path program 1 times [2018-12-08 20:38:44,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 20:38:44,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:44,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,227 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 20:38:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:44,267 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 20:38:44,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:44,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 20:38:44,268 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 20:38:44,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 20:38:44,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 20:38:44,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:44,269 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-08 20:38:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:44,291 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-08 20:38:44,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 20:38:44,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-08 20:38:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:44,292 INFO L225 Difference]: With dead ends: 63 [2018-12-08 20:38:44,292 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 20:38:44,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 20:38:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-08 20:38:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 20:38:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 20:38:44,298 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-08 20:38:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:44,299 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 20:38:44,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 20:38:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 20:38:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 20:38:44,299 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:44,300 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] [2018-12-08 20:38:44,300 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:44,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:44,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1468837453, now seen corresponding path program 1 times [2018-12-08 20:38:44,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 20:38:44,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:44,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 20:38:44,301 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 20:38:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:38:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:38:44,337 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 20:38:44,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 08:38:44 BoogieIcfgContainer [2018-12-08 20:38:44,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 20:38:44,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 20:38:44,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 20:38:44,354 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 20:38:44,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:43" (3/4) ... [2018-12-08 20:38:44,356 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 20:38:44,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 20:38:44,357 INFO L168 Benchmark]: Toolchain (without parser) took 814.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -93.7 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:44,358 INFO L168 Benchmark]: CDTParser took 0.11 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 20:38:44,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.32 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 20:38:44,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.27 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 20:38:44,359 INFO L168 Benchmark]: Boogie Preprocessor took 47.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:44,359 INFO L168 Benchmark]: RCFGBuilder took 174.85 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:44,359 INFO L168 Benchmark]: TraceAbstraction took 411.24 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: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:44,360 INFO L168 Benchmark]: Witness Printer took 2.80 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 20:38:44,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.32 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 14.27 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 47.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 174.85 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 411.24 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: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 20:38:45,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 20:38:45,723 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 20:38:45,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 20:38:45,729 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 20:38:45,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 20:38:45,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 20:38:45,731 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 20:38:45,732 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 20:38:45,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 20:38:45,733 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 20:38:45,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 20:38:45,733 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 20:38:45,734 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 20:38:45,734 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 20:38:45,735 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 20:38:45,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 20:38:45,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 20:38:45,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 20:38:45,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 20:38:45,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 20:38:45,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 20:38:45,741 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 20:38:45,741 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 20:38:45,741 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 20:38:45,742 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 20:38:45,742 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 20:38:45,743 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 20:38:45,743 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 20:38:45,744 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 20:38:45,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 20:38:45,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 20:38:45,745 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 20:38:45,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 20:38:45,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 20:38:45,746 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 20:38:45,746 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 20:38:45,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 20:38:45,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 20:38:45,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 20:38:45,757 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 20:38:45,757 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 20:38:45,757 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 20:38:45,757 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 20:38:45,757 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 20:38:45,758 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 20:38:45,758 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 20:38:45,758 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 20:38:45,758 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 20:38:45,759 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 20:38:45,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 20:38:45,759 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 20:38:45,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 20:38:45,759 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 20:38:45,759 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 20:38:45,760 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 20:38:45,760 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 20:38:45,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 20:38:45,760 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 20:38:45,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 20:38:45,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 20:38:45,761 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 20:38:45,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 20:38:45,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 20:38:45,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 20:38:45,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 20:38:45,761 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 20:38:45,761 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 20:38:45,762 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 20:38:45,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 20:38:45,762 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 20:38:45,762 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 20:38:45,762 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_93e949ff-1afe-47b9-a673-3bf91f604f19/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-12-08 20:38:45,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 20:38:45,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 20:38:45,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 20:38:45,796 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 20:38:45,796 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 20:38:45,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 20:38:45,833 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/74343e0a2/f1dfbd5801e244bf9dac7551b3ab0881/FLAGb3b3f3ee4 [2018-12-08 20:38:46,180 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 20:38:46,180 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 20:38:46,184 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/74343e0a2/f1dfbd5801e244bf9dac7551b3ab0881/FLAGb3b3f3ee4 [2018-12-08 20:38:46,573 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/data/74343e0a2/f1dfbd5801e244bf9dac7551b3ab0881 [2018-12-08 20:38:46,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 20:38:46,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 20:38:46,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 20:38:46,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 20:38:46,580 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 20:38:46,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45734aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46, skipping insertion in model container [2018-12-08 20:38:46,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 20:38:46,604 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 20:38:46,714 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 20:38:46,717 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 20:38:46,732 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 20:38:46,747 INFO L195 MainTranslator]: Completed translation [2018-12-08 20:38:46,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46 WrapperNode [2018-12-08 20:38:46,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 20:38:46,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 20:38:46,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 20:38:46,748 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 20:38:46,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 20:38:46,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 20:38:46,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 20:38:46,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 20:38:46,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... [2018-12-08 20:38:46,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 20:38:46,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 20:38:46,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 20:38:46,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 20:38:46,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 20:38:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 20:38:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 20:38:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-08 20:38:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-08 20:38:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-08 20:38:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-08 20:38:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 20:38:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 20:38:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 20:38:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 20:38:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 20:38:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 20:38:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-08 20:38:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-08 20:38:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-08 20:38:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 20:38:46,991 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 20:38:47,019 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 20:38:47,022 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 20:38:47,022 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 20:38:47,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:47 BoogieIcfgContainer [2018-12-08 20:38:47,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 20:38:47,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 20:38:47,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 20:38:47,026 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 20:38:47,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 08:38:46" (1/3) ... [2018-12-08 20:38:47,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c9f346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:38:47, skipping insertion in model container [2018-12-08 20:38:47,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:46" (2/3) ... [2018-12-08 20:38:47,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c9f346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:38:47, skipping insertion in model container [2018-12-08 20:38:47,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:47" (3/3) ... [2018-12-08 20:38:47,028 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-12-08 20:38:47,033 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 20:38:47,037 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 20:38:47,046 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 20:38:47,062 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 20:38:47,063 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 20:38:47,063 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 20:38:47,063 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 20:38:47,063 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 20:38:47,063 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 20:38:47,063 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 20:38:47,063 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 20:38:47,063 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 20:38:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-08 20:38:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 20:38:47,076 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:47,076 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] [2018-12-08 20:38:47,077 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:47,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:47,081 INFO L82 PathProgramCache]: Analyzing trace with hash -849686715, now seen corresponding path program 1 times [2018-12-08 20:38:47,083 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:47,083 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 20:38:47,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:47,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:47,139 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 20:38:47,139 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:47,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:47,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 20:38:47,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 20:38:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 20:38:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 20:38:47,158 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-08 20:38:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:47,172 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-08 20:38:47,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 20:38:47,173 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-08 20:38:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:47,178 INFO L225 Difference]: With dead ends: 75 [2018-12-08 20:38:47,179 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 20:38:47,181 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 20:38:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 20:38:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-08 20:38:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 20:38:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-08 20:38:47,204 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-08 20:38:47,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:47,205 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-08 20:38:47,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 20:38:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-08 20:38:47,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 20:38:47,206 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:47,206 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] [2018-12-08 20:38:47,206 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:47,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:47,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2014516036, now seen corresponding path program 1 times [2018-12-08 20:38:47,207 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:47,207 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 20:38:47,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:47,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:47,262 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 20:38:47,263 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:47,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:47,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 20:38:47,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 20:38:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 20:38:47,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:47,271 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-08 20:38:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:47,295 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-08 20:38:47,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 20:38:47,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-08 20:38:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:47,297 INFO L225 Difference]: With dead ends: 56 [2018-12-08 20:38:47,297 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 20:38:47,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:47,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 20:38:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 20:38:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 20:38:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-08 20:38:47,303 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-08 20:38:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:47,303 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-08 20:38:47,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 20:38:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-08 20:38:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 20:38:47,304 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:47,304 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] [2018-12-08 20:38:47,304 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:47,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:47,304 INFO L82 PathProgramCache]: Analyzing trace with hash -842703294, now seen corresponding path program 1 times [2018-12-08 20:38:47,304 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:47,304 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 20:38:47,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:47,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:47,426 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 20:38:47,426 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:47,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:47,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 20:38:47,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 20:38:47,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 20:38:47,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 20:38:47,438 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-08 20:38:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:47,816 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-08 20:38:47,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 20:38:47,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-08 20:38:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:47,817 INFO L225 Difference]: With dead ends: 60 [2018-12-08 20:38:47,818 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 20:38:47,818 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 20:38:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 20:38:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-08 20:38:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 20:38:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-08 20:38:47,823 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-08 20:38:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:47,823 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-08 20:38:47,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 20:38:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-08 20:38:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-08 20:38:47,824 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:47,824 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 20:38:47,825 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:47,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 513797078, now seen corresponding path program 1 times [2018-12-08 20:38:47,825 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:47,825 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/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 20:38:47,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:47,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 20:38:47,873 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:47,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:47,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 20:38:47,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 20:38:47,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 20:38:47,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:47,881 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-08 20:38:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:47,891 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-08 20:38:47,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 20:38:47,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-08 20:38:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:47,892 INFO L225 Difference]: With dead ends: 56 [2018-12-08 20:38:47,892 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 20:38:47,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 20:38:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 20:38:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 20:38:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 20:38:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-08 20:38:47,896 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-08 20:38:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:47,896 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-08 20:38:47,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 20:38:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-08 20:38:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-08 20:38:47,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:47,897 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-12-08 20:38:47,897 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:47,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:47,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1245379058, now seen corresponding path program 1 times [2018-12-08 20:38:47,897 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:47,898 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-08 20:38:47,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:47,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 20:38:48,015 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:48,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:48,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 20:38:48,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 20:38:48,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 20:38:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 20:38:48,023 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-08 20:38:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:48,307 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-08 20:38:48,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 20:38:48,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-08 20:38:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:48,308 INFO L225 Difference]: With dead ends: 58 [2018-12-08 20:38:48,308 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 20:38:48,309 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 20:38:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 20:38:48,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-08 20:38:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 20:38:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-08 20:38:48,311 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-08 20:38:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:48,312 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-08 20:38:48,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 20:38:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-08 20:38:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 20:38:48,312 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:48,313 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 20:38:48,313 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:48,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:48,313 INFO L82 PathProgramCache]: Analyzing trace with hash 45724059, now seen corresponding path program 1 times [2018-12-08 20:38:48,313 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:48,313 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-08 20:38:48,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:48,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 20:38:48,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:48,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:48,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 20:38:48,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 20:38:48,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 20:38:48,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 20:38:48,399 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-08 20:38:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:48,453 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-08 20:38:48,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 20:38:48,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-08 20:38:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:48,455 INFO L225 Difference]: With dead ends: 51 [2018-12-08 20:38:48,455 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 20:38:48,455 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 20:38:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 20:38:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-08 20:38:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 20:38:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-08 20:38:48,458 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-08 20:38:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:48,458 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-08 20:38:48,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 20:38:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-08 20:38:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 20:38:48,459 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:48,459 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 20:38:48,459 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:48,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:48,459 INFO L82 PathProgramCache]: Analyzing trace with hash -763622567, now seen corresponding path program 1 times [2018-12-08 20:38:48,460 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:48,460 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-08 20:38:48,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 20:38:48,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 20:38:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 20:38:48,540 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 20:38:48,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 20:38:48,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 20:38:48,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 20:38:48,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 20:38:48,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 20:38:48,548 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-08 20:38:48,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 20:38:48,686 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-08 20:38:48,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 20:38:48,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-08 20:38:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 20:38:48,687 INFO L225 Difference]: With dead ends: 38 [2018-12-08 20:38:48,687 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 20:38:48,687 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-08 20:38:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 20:38:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-08 20:38:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 20:38:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-08 20:38:48,689 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-08 20:38:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 20:38:48,690 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-08 20:38:48,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 20:38:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-08 20:38:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-08 20:38:48,690 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 20:38:48,690 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1] [2018-12-08 20:38:48,691 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 20:38:48,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 20:38:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash -135886477, now seen corresponding path program 1 times [2018-12-08 20:38:48,691 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 20:38:48,691 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-08 20:38:48,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 20:38:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:38:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 20:38:48,811 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 20:38:48,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 08:38:48 BoogieIcfgContainer [2018-12-08 20:38:48,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 20:38:48,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 20:38:48,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 20:38:48,837 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 20:38:48,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:47" (3/4) ... [2018-12-08 20:38:48,838 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 20:38:48,878 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_93e949ff-1afe-47b9-a673-3bf91f604f19/bin-2019/utaipan/witness.graphml [2018-12-08 20:38:48,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 20:38:48,879 INFO L168 Benchmark]: Toolchain (without parser) took 2304.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 943.4 MB in the beginning and 886.2 MB in the end (delta: 57.2 MB). Peak memory consumption was 192.4 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:48,880 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 20:38:48,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.13 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:48,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.21 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:48,881 INFO L168 Benchmark]: Boogie Preprocessor took 19.74 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 20:38:48,881 INFO L168 Benchmark]: RCFGBuilder took 239.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:48,881 INFO L168 Benchmark]: TraceAbstraction took 1813.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.2 MB in the end (delta: 218.0 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. [2018-12-08 20:38:48,882 INFO L168 Benchmark]: Witness Printer took 41.84 ms. Allocated memory is still 1.2 GB. Free memory is still 886.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 20:38:48,883 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 171.13 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 15.21 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.74 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 239.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1813.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.2 MB in the end (delta: 218.0 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.84 ms. Allocated memory is still 1.2 GB. Free memory is still 886.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] return x > y ? x : y; [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13625 SizeOfPredicates, 15 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...