./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-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_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f441bd4a1f5705911b7315c074b39e665542818e ...................................................................................................................................................................................................................................................................................................................................................................................... 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_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 20:29:27,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:29:27,203 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:29:27,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:29:27,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:29:27,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:29:27,212 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:29:27,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:29:27,214 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:29:27,215 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:29:27,215 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:29:27,215 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:29:27,216 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:29:27,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:29:27,216 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:29:27,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:29:27,217 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:29:27,218 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:29:27,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:29:27,219 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:29:27,220 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:29:27,221 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:29:27,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:29:27,222 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:29:27,222 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:29:27,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:29:27,223 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:29:27,223 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:29:27,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:29:27,224 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:29:27,224 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:29:27,224 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:29:27,224 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:29:27,225 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:29:27,225 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:29:27,225 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:29:27,225 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 20:29:27,232 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:29:27,232 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:29:27,233 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 20:29:27,233 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 20:29:27,233 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 20:29:27,233 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 20:29:27,233 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 20:29:27,233 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:29:27,233 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 20:29:27,233 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 20:29:27,234 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:29:27,234 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:29:27,235 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 20:29:27,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 20:29:27,235 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_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f441bd4a1f5705911b7315c074b39e665542818e [2018-12-02 20:29:27,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:29:27,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:29:27,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:29:27,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:29:27,263 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:29:27,263 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-02 20:29:27,298 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/517235740/3cb5b9a8bc9d4d109395aedd9fb3b6f5/FLAG29551ec6d [2018-12-02 20:29:27,705 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:29:27,705 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-02 20:29:27,709 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/517235740/3cb5b9a8bc9d4d109395aedd9fb3b6f5/FLAG29551ec6d [2018-12-02 20:29:27,718 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/517235740/3cb5b9a8bc9d4d109395aedd9fb3b6f5 [2018-12-02 20:29:27,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:29:27,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 20:29:27,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:29:27,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:29:27,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:29:27,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c1f7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27, skipping insertion in model container [2018-12-02 20:29:27,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:29:27,740 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:29:27,832 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:29:27,834 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:29:27,849 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:29:27,861 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:29:27,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27 WrapperNode [2018-12-02 20:29:27,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:29:27,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 20:29:27,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 20:29:27,862 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 20:29:27,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 20:29:27,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:29:27,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:29:27,904 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:29:27,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... [2018-12-02 20:29:27,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:29:27,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:29:27,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:29:27,921 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:29:27,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 20:29:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:29:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 20:29:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-02 20:29:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-02 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 20:29:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 20:29:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 20:29:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 20:29:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 20:29:28,093 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:29:28,094 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 20:29:28,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:28 BoogieIcfgContainer [2018-12-02 20:29:28,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:29:28,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 20:29:28,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 20:29:28,096 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 20:29:28,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:29:27" (1/3) ... [2018-12-02 20:29:28,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383a71b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:28, skipping insertion in model container [2018-12-02 20:29:28,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:27" (2/3) ... [2018-12-02 20:29:28,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383a71b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:28, skipping insertion in model container [2018-12-02 20:29:28,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:28" (3/3) ... [2018-12-02 20:29:28,099 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-12-02 20:29:28,105 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 20:29:28,109 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 20:29:28,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 20:29:28,137 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 20:29:28,138 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 20:29:28,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 20:29:28,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 20:29:28,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:29:28,138 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:29:28,138 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 20:29:28,138 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:29:28,138 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 20:29:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-02 20:29:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 20:29:28,152 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:28,153 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] [2018-12-02 20:29:28,154 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:28,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:28,157 INFO L82 PathProgramCache]: Analyzing trace with hash -278474869, now seen corresponding path program 1 times [2018-12-02 20:29:28,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:29:28,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:29:28,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:28,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:29:28,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:28,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 20:29:28,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 20:29:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 20:29:28,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 20:29:28,247 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-02 20:29:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:28,261 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-02 20:29:28,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 20:29:28,262 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 20:29:28,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:28,267 INFO L225 Difference]: With dead ends: 79 [2018-12-02 20:29:28,267 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 20:29:28,269 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 [2018-12-02 20:29:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 20:29:28,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 20:29:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 20:29:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 20:29:28,293 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-02 20:29:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:28,293 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 20:29:28,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 20:29:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 20:29:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 20:29:28,295 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:28,295 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] [2018-12-02 20:29:28,295 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:28,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:28,295 INFO L82 PathProgramCache]: Analyzing trace with hash -428418178, now seen corresponding path program 1 times [2018-12-02 20:29:28,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:29:28,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:29:28,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:28,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:29:28,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:28,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 20:29:28,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:29:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:29:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:29:28,341 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-02 20:29:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:28,359 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-02 20:29:28,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 20:29:28,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 20:29:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:28,361 INFO L225 Difference]: With dead ends: 59 [2018-12-02 20:29:28,362 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 20:29:28,362 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 [2018-12-02 20:29:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 20:29:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 20:29:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 20:29:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 20:29:28,367 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-02 20:29:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:28,368 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 20:29:28,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:29:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 20:29:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 20:29:28,368 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:28,368 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] [2018-12-02 20:29:28,368 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:28,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash 328113906, now seen corresponding path program 1 times [2018-12-02 20:29:28,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:29:28,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:29:28,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:28,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:29:28,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:28,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 20:29:28,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:29:28,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:29:28,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:29:28,410 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-02 20:29:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:28,431 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-02 20:29:28,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 20:29:28,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 20:29:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:28,432 INFO L225 Difference]: With dead ends: 63 [2018-12-02 20:29:28,432 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 20:29:28,433 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 [2018-12-02 20:29:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 20:29:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-02 20:29:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 20:29:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 20:29:28,438 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-02 20:29:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:28,439 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 20:29:28,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:29:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 20:29:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 20:29:28,440 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:28,440 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] [2018-12-02 20:29:28,440 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:28,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1468837453, now seen corresponding path program 1 times [2018-12-02 20:29:28,440 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:29:28,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:29:28,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:28,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:29:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:29:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:29:28,482 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 20:29:28,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:29:28 BoogieIcfgContainer [2018-12-02 20:29:28,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 20:29:28,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 20:29:28,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 20:29:28,499 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 20:29:28,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:28" (3/4) ... [2018-12-02 20:29:28,502 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 20:29:28,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 20:29:28,502 INFO L168 Benchmark]: Toolchain (without parser) took 782.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -99.8 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:28,503 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:29:28,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.74 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:28,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:28,504 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:28,505 INFO L168 Benchmark]: RCFGBuilder took 172.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:28,505 INFO L168 Benchmark]: TraceAbstraction took 404.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:28,505 INFO L168 Benchmark]: Witness Printer took 2.83 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. [2018-12-02 20:29:28,507 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.74 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 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 41.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.64 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 172.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 404.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 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 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; VAL [y=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L20] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0, x=4286578691, y=0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578691, y=0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - 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 [2018-12-02 20:29:29,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:29:29,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:29:29,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:29:29,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:29:29,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:29:29,841 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:29:29,843 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:29:29,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:29:29,844 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:29:29,845 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:29:29,845 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:29:29,846 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:29:29,846 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:29:29,847 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:29:29,848 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:29:29,848 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:29:29,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:29:29,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:29:29,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:29:29,852 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:29:29,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:29:29,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:29:29,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:29:29,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:29:29,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:29:29,856 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:29:29,857 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:29:29,857 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:29:29,858 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:29:29,858 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:29:29,859 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:29:29,859 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:29:29,859 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:29:29,860 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:29:29,860 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:29:29,860 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 20:29:29,870 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:29:29,870 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:29:29,871 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 20:29:29,871 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 20:29:29,871 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 20:29:29,871 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 20:29:29,871 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 20:29:29,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 20:29:29,872 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 20:29:29,873 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 20:29:29,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:29:29,874 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 20:29:29,874 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 20:29:29,874 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_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f441bd4a1f5705911b7315c074b39e665542818e [2018-12-02 20:29:29,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:29:29,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:29:29,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:29:29,911 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:29:29,911 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:29:29,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-02 20:29:29,952 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/f73da5cad/4f8431682b7342a6af182dde8450b6e9/FLAG58b4b311a [2018-12-02 20:29:30,237 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:29:30,238 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/sv-benchmarks/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-02 20:29:30,242 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/f73da5cad/4f8431682b7342a6af182dde8450b6e9/FLAG58b4b311a [2018-12-02 20:29:30,252 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/data/f73da5cad/4f8431682b7342a6af182dde8450b6e9 [2018-12-02 20:29:30,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:29:30,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 20:29:30,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:29:30,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:29:30,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:29:30,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284ba15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30, skipping insertion in model container [2018-12-02 20:29:30,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:29:30,281 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:29:30,383 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:29:30,386 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:29:30,404 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:29:30,420 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:29:30,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30 WrapperNode [2018-12-02 20:29:30,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:29:30,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 20:29:30,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 20:29:30,421 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 20:29:30,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 20:29:30,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:29:30,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:29:30,437 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:29:30,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... [2018-12-02 20:29:30,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:29:30,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:29:30,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:29:30,458 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:29:30,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 20:29:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:29:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 20:29:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-02 20:29:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-02 20:29:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 20:29:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 20:29:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 20:29:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 20:29:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 20:29:30,656 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:29:30,679 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 20:29:30,682 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:29:30,682 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 20:29:30,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:30 BoogieIcfgContainer [2018-12-02 20:29:30,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:29:30,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 20:29:30,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 20:29:30,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 20:29:30,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:29:30" (1/3) ... [2018-12-02 20:29:30,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c11aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:30, skipping insertion in model container [2018-12-02 20:29:30,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:30" (2/3) ... [2018-12-02 20:29:30,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c11aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:30, skipping insertion in model container [2018-12-02 20:29:30,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:30" (3/3) ... [2018-12-02 20:29:30,688 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-12-02 20:29:30,693 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 20:29:30,697 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 20:29:30,706 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 20:29:30,723 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 20:29:30,724 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 20:29:30,724 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 20:29:30,724 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 20:29:30,724 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:29:30,724 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:29:30,724 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 20:29:30,724 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:29:30,724 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 20:29:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 20:29:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 20:29:30,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:30,738 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] [2018-12-02 20:29:30,739 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:30,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash -849686715, now seen corresponding path program 1 times [2018-12-02 20:29:30,745 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:30,745 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 20:29:30,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:30,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:29:30,804 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:30,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:30,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 20:29:30,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 20:29:30,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 20:29:30,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 20:29:30,824 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 20:29:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:30,837 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-02 20:29:30,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 20:29:30,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 20:29:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:30,843 INFO L225 Difference]: With dead ends: 75 [2018-12-02 20:29:30,844 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 20:29:30,845 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 [2018-12-02 20:29:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 20:29:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-02 20:29:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 20:29:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-02 20:29:30,869 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-02 20:29:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:30,869 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-02 20:29:30,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 20:29:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-02 20:29:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 20:29:30,871 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:30,871 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] [2018-12-02 20:29:30,871 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:30,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:30,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2014516036, now seen corresponding path program 1 times [2018-12-02 20:29:30,871 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:30,871 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 20:29:30,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:30,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:29:30,931 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:30,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:30,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 20:29:30,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:29:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:29:30,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:29:30,940 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-02 20:29:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:30,967 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-02 20:29:30,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 20:29:30,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-02 20:29:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:30,969 INFO L225 Difference]: With dead ends: 56 [2018-12-02 20:29:30,969 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 20:29:30,970 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 [2018-12-02 20:29:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 20:29:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 20:29:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 20:29:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-02 20:29:30,976 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-02 20:29:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:30,977 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-02 20:29:30,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:29:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-02 20:29:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 20:29:30,977 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:30,977 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] [2018-12-02 20:29:30,978 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:30,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:30,978 INFO L82 PathProgramCache]: Analyzing trace with hash -842703294, now seen corresponding path program 1 times [2018-12-02 20:29:30,978 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:30,978 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 20:29:30,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:31,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:29:31,104 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:31,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:31,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 20:29:31,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 20:29:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 20:29:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:29:31,116 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-02 20:29:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:31,438 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-02 20:29:31,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 20:29:31,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-02 20:29:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:31,439 INFO L225 Difference]: With dead ends: 60 [2018-12-02 20:29:31,440 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 20:29:31,440 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 [2018-12-02 20:29:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 20:29:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 20:29:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 20:29:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-02 20:29:31,444 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-02 20:29:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:31,444 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-02 20:29:31,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 20:29:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-02 20:29:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 20:29:31,444 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:31,444 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] [2018-12-02 20:29:31,445 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:31,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:31,445 INFO L82 PathProgramCache]: Analyzing trace with hash 513797078, now seen corresponding path program 1 times [2018-12-02 20:29:31,445 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:31,445 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 20:29:31,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:31,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 20:29:31,506 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:31,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:31,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 20:29:31,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:29:31,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:29:31,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:29:31,515 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-02 20:29:31,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:31,526 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-02 20:29:31,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 20:29:31,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-02 20:29:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:31,527 INFO L225 Difference]: With dead ends: 56 [2018-12-02 20:29:31,527 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 20:29:31,527 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 [2018-12-02 20:29:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 20:29:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 20:29:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 20:29:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-02 20:29:31,530 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-02 20:29:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:31,531 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-02 20:29:31,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:29:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-02 20:29:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 20:29:31,531 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:31,531 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] [2018-12-02 20:29:31,531 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:31,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1245379058, now seen corresponding path program 1 times [2018-12-02 20:29:31,532 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:31,532 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/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 [2018-12-02 20:29:31,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:31,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 20:29:31,631 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:31,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:31,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 20:29:31,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 20:29:31,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 20:29:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:29:31,639 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-02 20:29:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:31,892 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-02 20:29:31,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 20:29:31,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-02 20:29:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:31,893 INFO L225 Difference]: With dead ends: 58 [2018-12-02 20:29:31,893 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 20:29:31,893 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 [2018-12-02 20:29:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 20:29:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 20:29:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 20:29:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-02 20:29:31,896 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-02 20:29:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:31,896 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-02 20:29:31,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 20:29:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-02 20:29:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 20:29:31,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:31,897 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] [2018-12-02 20:29:31,897 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:31,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:31,897 INFO L82 PathProgramCache]: Analyzing trace with hash 45724059, now seen corresponding path program 1 times [2018-12-02 20:29:31,898 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:31,898 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/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 [2018-12-02 20:29:31,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:31,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 20:29:31,991 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:31,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:31,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 20:29:31,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 20:29:31,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:29:31,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:29:31,998 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-02 20:29:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:32,054 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 20:29:32,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 20:29:32,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-02 20:29:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:32,055 INFO L225 Difference]: With dead ends: 51 [2018-12-02 20:29:32,055 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 20:29:32,055 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 [2018-12-02 20:29:32,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 20:29:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 20:29:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 20:29:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-02 20:29:32,058 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-02 20:29:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:32,058 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-02 20:29:32,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 20:29:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-02 20:29:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 20:29:32,059 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:32,059 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] [2018-12-02 20:29:32,059 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:32,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash -763622567, now seen corresponding path program 1 times [2018-12-02 20:29:32,059 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:32,059 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/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 [2018-12-02 20:29:32,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:32,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 20:29:32,142 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:32,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:32,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 20:29:32,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 20:29:32,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 20:29:32,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 20:29:32,150 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-02 20:29:32,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:32,281 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-02 20:29:32,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 20:29:32,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-02 20:29:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:32,282 INFO L225 Difference]: With dead ends: 38 [2018-12-02 20:29:32,282 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 20:29:32,282 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-02 20:29:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 20:29:32,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 20:29:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 20:29:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-02 20:29:32,286 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-02 20:29:32,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:32,286 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-02 20:29:32,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 20:29:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-02 20:29:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 20:29:32,287 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:29:32,287 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] [2018-12-02 20:29:32,288 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 20:29:32,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:29:32,288 INFO L82 PathProgramCache]: Analyzing trace with hash -135886477, now seen corresponding path program 1 times [2018-12-02 20:29:32,288 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 20:29:32,288 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/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 [2018-12-02 20:29:32,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:29:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:29:32,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:29:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 20:29:32,490 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 20:29:32,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:29:32,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-02 20:29:32,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 20:29:32,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 20:29:32,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-02 20:29:32,499 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-12-02 20:29:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:29:32,841 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-12-02 20:29:32,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 20:29:32,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-12-02 20:29:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:29:32,842 INFO L225 Difference]: With dead ends: 35 [2018-12-02 20:29:32,842 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 20:29:32,842 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-12-02 20:29:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 20:29:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 20:29:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 20:29:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 20:29:32,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-12-02 20:29:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:29:32,843 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 20:29:32,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 20:29:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 20:29:32,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 20:29:32,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 20:29:32,956 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 20:29:32,956 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 20:29:32,956 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 20:29:32,956 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 20:29:32,956 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 20:29:32,956 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 20:29:32,956 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 65 84) the Hoare annotation is: true [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 65 84) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L444 ceAbstractionStarter]: At program point L78-1(line 78) the Hoare annotation is: (and (= (_ +zero 8 24) main_~res~0) |main_#t~short9| (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) main_~y~0)) [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 65 84) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point L78-2(line 78) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L444 ceAbstractionStarter]: At program point L75(line 75) the Hoare annotation is: (and (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) main_~y~0)) [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point L75-1(line 75) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point L78-4(lines 78 81) no Hoare annotation was computed. [2018-12-02 20:29:32,957 INFO L448 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L451 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (= |fmax_float_#in~x| fmax_float_~x))) (or (and (= |fmax_float_#in~y| fmax_float_~y) .cse0) (and (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (not (= (bvadd __fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= |fmax_float_#in~x| (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0))))) .cse0))) [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L444 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-12-02 20:29:32,958 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 53 63) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L444 ceAbstractionStarter]: At program point L56-2(lines 56 60) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-02 20:29:32,959 INFO L448 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2018-12-02 20:29:32,959 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 53 63) the Hoare annotation is: true [2018-12-02 20:29:32,960 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 53 63) no Hoare annotation was computed. [2018-12-02 20:29:32,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:29:32 BoogieIcfgContainer [2018-12-02 20:29:32,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 20:29:32,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 20:29:32,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 20:29:32,967 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 20:29:32,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:30" (3/4) ... [2018-12-02 20:29:32,969 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 20:29:32,973 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 20:29:32,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 20:29:32,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-12-02 20:29:32,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-02 20:29:32,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-02 20:29:32,977 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-02 20:29:32,977 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-02 20:29:32,977 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 20:29:32,994 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-02 20:29:32,995 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 20:29:33,011 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b1bbd485-73af-41ee-b4e9-6df558196fd1/bin-2019/uautomizer/witness.graphml [2018-12-02 20:29:33,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 20:29:33,012 INFO L168 Benchmark]: Toolchain (without parser) took 2757.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 943.4 MB in the beginning and 798.0 MB in the end (delta: 145.3 MB). Peak memory consumption was 259.6 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:33,013 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-02 20:29:33,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.07 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. [2018-12-02 20:29:33,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.21 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. [2018-12-02 20:29:33,014 INFO L168 Benchmark]: Boogie Preprocessor took 20.58 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. [2018-12-02 20:29:33,014 INFO L168 Benchmark]: RCFGBuilder took 224.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:33,015 INFO L168 Benchmark]: TraceAbstraction took 2284.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 805.0 MB in the end (delta: 271.2 MB). Peak memory consumption was 271.2 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:33,015 INFO L168 Benchmark]: Witness Printer took 44.77 ms. Allocated memory is still 1.1 GB. Free memory was 805.0 MB in the beginning and 798.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-02 20:29:33,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.07 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 16.21 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 20.58 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 224.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2284.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 805.0 MB in the end (delta: 271.2 MB). Peak memory consumption was 271.2 MB. Max. memory is 11.5 GB. * Witness Printer took 44.77 ms. Allocated memory is still 1.1 GB. Free memory was 805.0 MB in the beginning and 798.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 121 SDslu, 975 SDs, 0 SdLazy, 365 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 69 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20050 SizeOfPredicates, 21 NumberOfNonLiveVariables, 650 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...