./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 cbf38875841624eee0d839935b3b6d34a59b0b20 ................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 cbf38875841624eee0d839935b3b6d34a59b0b20 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:12:34,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:12:34,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:12:34,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:12:34,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:12:34,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:12:34,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:12:34,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:12:34,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:12:34,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:12:34,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:12:34,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:12:34,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:12:34,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:12:34,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:12:34,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:12:34,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:12:34,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:12:34,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:12:34,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:12:34,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:12:34,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:12:34,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:12:34,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:12:34,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:12:34,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:12:34,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:12:34,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:12:34,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:12:34,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:12:34,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:12:34,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:12:34,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:12:34,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:12:34,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:12:34,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:12:34,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:12:34,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:12:34,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:12:34,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:12:34,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:12:34,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:12:34,182 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:12:34,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:12:34,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:12:34,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:12:34,184 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:12:34,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:12:34,184 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:12:34,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:12:34,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:12:34,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:12:34,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:12:34,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:12:34,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:12:34,186 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:12:34,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:12:34,186 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:12:34,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:12:34,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:12:34,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:12:34,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:12:34,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:12:34,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:12:34,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:12:34,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:12:34,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:12:34,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:12:34,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:12:34,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:12:34,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-11-15 21:12:34,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:12:34,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:12:34,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:12:34,229 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:12:34,229 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:12:34,230 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-15 21:12:34,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/50d6af51f/ca3fc4b529f34c609d15d0b1a98b5a6b/FLAGd7bb9d5ad [2019-11-15 21:12:34,625 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:12:34,626 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-15 21:12:34,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/50d6af51f/ca3fc4b529f34c609d15d0b1a98b5a6b/FLAGd7bb9d5ad [2019-11-15 21:12:35,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/50d6af51f/ca3fc4b529f34c609d15d0b1a98b5a6b [2019-11-15 21:12:35,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:12:35,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:12:35,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:12:35,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:12:35,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:12:35,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4828edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35, skipping insertion in model container [2019-11-15 21:12:35,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,037 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:12:35,055 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:12:35,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:12:35,247 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:12:35,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:12:35,358 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:12:35,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35 WrapperNode [2019-11-15 21:12:35,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:12:35,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:12:35,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:12:35,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:12:35,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:12:35,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:12:35,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:12:35,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:12:35,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... [2019-11-15 21:12:35,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:12:35,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:12:35,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:12:35,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:12:35,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 [2019-11-15 21:12:35,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 21:12:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:12:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 21:12:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:12:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:12:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:12:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:12:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:12:35,858 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:12:35,858 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-15 21:12:35,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:12:35 BoogieIcfgContainer [2019-11-15 21:12:35,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:12:35,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:12:35,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:12:35,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:12:35,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:12:35" (1/3) ... [2019-11-15 21:12:35,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501b0b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:12:35, skipping insertion in model container [2019-11-15 21:12:35,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:35" (2/3) ... [2019-11-15 21:12:35,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501b0b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:12:35, skipping insertion in model container [2019-11-15 21:12:35,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:12:35" (3/3) ... [2019-11-15 21:12:35,869 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-11-15 21:12:35,879 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:12:35,894 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:12:35,907 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:12:35,936 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:12:35,937 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:12:35,937 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:12:35,937 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:12:35,937 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:12:35,937 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:12:35,938 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:12:35,938 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:12:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-15 21:12:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:12:35,965 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:12:35,966 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:12:35,970 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:12:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:12:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-11-15 21:12:35,986 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:12:35,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531185296] [2019-11-15 21:12:35,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:12:35,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:12:35,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:12:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:12:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:36,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531185296] [2019-11-15 21:12:36,121 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:12:36,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:12:36,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881056939] [2019-11-15 21:12:36,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:12:36,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:12:36,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:12:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:12:36,140 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-15 21:12:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:12:36,159 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-11-15 21:12:36,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:12:36,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 21:12:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:12:36,170 INFO L225 Difference]: With dead ends: 40 [2019-11-15 21:12:36,171 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 21:12:36,174 INFO L600 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 [2019-11-15 21:12:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 21:12:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 21:12:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 21:12:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-15 21:12:36,208 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-15 21:12:36,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:12:36,209 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-15 21:12:36,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:12:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-15 21:12:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:12:36,210 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:12:36,210 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:12:36,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:12:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:12:36,211 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-11-15 21:12:36,211 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:12:36,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713519976] [2019-11-15 21:12:36,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:12:36,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:12:36,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:12:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:12:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:12:36,335 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:12:36,335 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:12:36,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:12:36 BoogieIcfgContainer [2019-11-15 21:12:36,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:12:36,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:12:36,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:12:36,358 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:12:36,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:12:35" (3/4) ... [2019-11-15 21:12:36,362 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:12:36,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:12:36,365 INFO L168 Benchmark]: Toolchain (without parser) took 1341.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 640.4 kB. Max. memory is 11.5 GB. [2019-11-15 21:12:36,365 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:12:36,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:36,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.74 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. [2019-11-15 21:12:36,367 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:36,368 INFO L168 Benchmark]: RCFGBuilder took 432.57 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:36,368 INFO L168 Benchmark]: TraceAbstraction took 497.01 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:36,369 INFO L168 Benchmark]: Witness Printer took 4.43 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. [2019-11-15 21:12:36,372 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.74 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. * Boogie Preprocessor took 29.57 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 432.57 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 497.01 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.43 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: 57]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 38, overapproximation of bitwiseAnd at line 19. Possible FailurePath: [L52] float x = 0.0f / 0.0f; [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L53] float res = trunc_float(x); [L44] return x != x; [L56] COND TRUE !isnan_float(res) [L57] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-cad4683 [2019-11-15 21:12:38,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:12:38,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:12:38,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:12:38,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:12:38,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:12:38,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:12:38,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:12:38,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:12:38,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:12:38,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:12:38,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:12:38,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:12:38,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:12:38,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:12:38,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:12:38,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:12:38,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:12:38,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:12:38,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:12:38,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:12:38,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:12:38,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:12:38,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:12:38,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:12:38,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:12:38,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:12:38,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:12:38,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:12:38,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:12:38,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:12:38,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:12:38,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:12:38,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:12:38,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:12:38,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:12:38,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:12:38,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:12:38,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:12:38,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:12:38,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:12:38,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:12:38,763 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:12:38,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:12:38,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:12:38,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:12:38,765 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:12:38,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:12:38,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:12:38,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:12:38,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:12:38,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:12:38,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:12:38,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:12:38,767 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:12:38,767 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:12:38,767 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:12:38,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:12:38,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:12:38,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:12:38,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:12:38,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:12:38,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:12:38,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:12:38,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:12:38,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:12:38,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:12:38,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:12:38,770 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:12:38,771 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:12:38,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:12:38,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:12:38,771 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-11-15 21:12:38,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:12:38,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:12:38,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:12:38,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:12:38,819 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:12:38,820 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-15 21:12:38,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/0edb5f120/0dd1edd5614c4b6d89c4e8ced2eb0988/FLAG33e7b6f2b [2019-11-15 21:12:39,309 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:12:39,310 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-15 21:12:39,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/0edb5f120/0dd1edd5614c4b6d89c4e8ced2eb0988/FLAG33e7b6f2b [2019-11-15 21:12:39,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/data/0edb5f120/0dd1edd5614c4b6d89c4e8ced2eb0988 [2019-11-15 21:12:39,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:12:39,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:12:39,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:12:39,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:12:39,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:12:39,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:39,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4214ed4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39, skipping insertion in model container [2019-11-15 21:12:39,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:39,719 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:12:39,739 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:12:39,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:12:39,947 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:12:39,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:12:39,998 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:12:39,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39 WrapperNode [2019-11-15 21:12:39,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:12:39,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:12:39,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:12:39,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:12:40,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:12:40,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:12:40,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:12:40,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:12:40,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... [2019-11-15 21:12:40,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:12:40,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:12:40,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:12:40,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:12:40,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 [2019-11-15 21:12:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 21:12:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:12:40,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:12:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-15 21:12:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:12:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-15 21:12:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 21:12:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:12:40,541 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:12:40,541 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-15 21:12:40,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:12:40 BoogieIcfgContainer [2019-11-15 21:12:40,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:12:40,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:12:40,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:12:40,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:12:40,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:12:39" (1/3) ... [2019-11-15 21:12:40,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:12:40, skipping insertion in model container [2019-11-15 21:12:40,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:12:39" (2/3) ... [2019-11-15 21:12:40,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:12:40, skipping insertion in model container [2019-11-15 21:12:40,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:12:40" (3/3) ... [2019-11-15 21:12:40,562 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-11-15 21:12:40,569 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:12:40,575 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:12:40,584 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:12:40,600 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:12:40,601 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:12:40,601 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:12:40,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:12:40,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:12:40,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:12:40,602 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:12:40,602 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:12:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-15 21:12:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:12:40,619 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:12:40,620 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:12:40,622 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:12:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:12:40,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-11-15 21:12:40,633 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:12:40,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393402896] [2019-11-15 21:12:40,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 [2019-11-15 21:12:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:12:40,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 21:12:40,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:12:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:40,753 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:12:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:40,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393402896] [2019-11-15 21:12:40,759 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:12:40,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 21:12:40,759 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508195195] [2019-11-15 21:12:40,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:12:40,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:12:40,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:12:40,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:12:40,775 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-15 21:12:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:12:40,796 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-11-15 21:12:40,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:12:40,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 21:12:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:12:40,807 INFO L225 Difference]: With dead ends: 40 [2019-11-15 21:12:40,807 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 21:12:40,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:12:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 21:12:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 21:12:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 21:12:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-15 21:12:40,843 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-15 21:12:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:12:40,844 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-15 21:12:40,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:12:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-15 21:12:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 21:12:40,846 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:12:40,847 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:12:41,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 21:12:41,061 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:12:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:12:41,061 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-11-15 21:12:41,062 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:12:41,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156637682] [2019-11-15 21:12:41,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 [2019-11-15 21:12:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:12:41,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 21:12:41,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:12:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:41,227 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:12:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:41,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156637682] [2019-11-15 21:12:41,261 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:12:41,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2019-11-15 21:12:41,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634740178] [2019-11-15 21:12:41,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:12:41,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:12:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:12:41,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:12:41,267 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-15 21:12:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:12:41,319 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-15 21:12:41,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:12:41,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-15 21:12:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:12:41,321 INFO L225 Difference]: With dead ends: 29 [2019-11-15 21:12:41,322 INFO L226 Difference]: Without dead ends: 24 [2019-11-15 21:12:41,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:12:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-15 21:12:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-11-15 21:12:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 21:12:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-15 21:12:41,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2019-11-15 21:12:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:12:41,328 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-15 21:12:41,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:12:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-15 21:12:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 21:12:41,329 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:12:41,329 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:12:41,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 21:12:41,537 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:12:41,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:12:41,538 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2019-11-15 21:12:41,538 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:12:41,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382471248] [2019-11-15 21:12:41,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 [2019-11-15 21:12:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:12:41,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 21:12:41,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:12:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:41,665 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:12:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:41,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382471248] [2019-11-15 21:12:41,723 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:12:41,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2019-11-15 21:12:41,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242837565] [2019-11-15 21:12:41,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:12:41,724 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:12:41,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:12:41,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:12:41,725 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2019-11-15 21:12:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:12:41,894 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-15 21:12:41,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:12:41,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-15 21:12:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:12:41,896 INFO L225 Difference]: With dead ends: 24 [2019-11-15 21:12:41,896 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 21:12:41,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:12:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 21:12:41,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-15 21:12:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-15 21:12:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-15 21:12:41,904 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2019-11-15 21:12:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:12:41,904 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-15 21:12:41,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:12:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-15 21:12:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:12:41,906 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:12:41,906 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:12:42,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 21:12:42,109 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:12:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:12:42,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2019-11-15 21:12:42,110 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:12:42,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508952042] [2019-11-15 21:12:42,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/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 [2019-11-15 21:12:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:12:42,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:12:42,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:12:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:42,250 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:12:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:12:42,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508952042] [2019-11-15 21:12:42,375 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:12:42,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-15 21:12:42,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102536765] [2019-11-15 21:12:42,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:12:42,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:12:42,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:12:42,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:12:42,377 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2019-11-15 21:12:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:12:42,465 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-15 21:12:42,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:12:42,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-15 21:12:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:12:42,466 INFO L225 Difference]: With dead ends: 17 [2019-11-15 21:12:42,466 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:12:42,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:12:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:12:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:12:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:12:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:12:42,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-15 21:12:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:12:42,469 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:12:42,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:12:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:12:42,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:12:42,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 21:12:42,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 21:12:42,773 INFO L443 ceAbstractionStarter]: For program point L56(lines 56 59) no Hoare annotation was computed. [2019-11-15 21:12:42,773 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (= ULTIMATE.start_trunc_float_~x .cse0) (= |ULTIMATE.start_trunc_float_#res| .cse0))) [2019-11-15 21:12:42,774 INFO L439 ceAbstractionStarter]: At program point L40(lines 12 41) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (= ULTIMATE.start_trunc_float_~x .cse0) (= |ULTIMATE.start_trunc_float_#res| .cse0))) [2019-11-15 21:12:42,774 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 21:12:42,774 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 21:12:42,774 INFO L446 ceAbstractionStarter]: At program point L61(lines 46 62) the Hoare annotation is: true [2019-11-15 21:12:42,774 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 21:12:42,774 INFO L443 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2019-11-15 21:12:42,775 INFO L443 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2019-11-15 21:12:42,775 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-11-15 21:12:42,775 INFO L443 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-15 21:12:42,775 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 21:12:42,776 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2019-11-15 21:12:42,776 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 39) no Hoare annotation was computed. [2019-11-15 21:12:42,776 INFO L443 ceAbstractionStarter]: For program point L21-1(lines 21 39) no Hoare annotation was computed. [2019-11-15 21:12:42,776 INFO L443 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-11-15 21:12:42,776 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: false [2019-11-15 21:12:42,776 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 35) no Hoare annotation was computed. [2019-11-15 21:12:42,777 INFO L443 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-15 21:12:42,777 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= ULTIMATE.start_trunc_float_~x (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2019-11-15 21:12:42,777 INFO L443 ceAbstractionStarter]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2019-11-15 21:12:42,792 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,796 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,796 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,803 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,804 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,804 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,805 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,806 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,807 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,807 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,808 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,809 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,810 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,810 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:12:42 BoogieIcfgContainer [2019-11-15 21:12:42,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:12:42,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:12:42,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:12:42,821 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:12:42,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:12:40" (3/4) ... [2019-11-15 21:12:42,827 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:12:42,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-15 21:12:42,857 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 21:12:42,857 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 21:12:42,881 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2019-11-15 21:12:42,881 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2019-11-15 21:12:42,904 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a2dd36ba-f948-42af-b9bf-313b1aa733e0/bin/uautomizer/witness.graphml [2019-11-15 21:12:42,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:12:42,906 INFO L168 Benchmark]: Toolchain (without parser) took 3204.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -59.4 MB). Peak memory consumption was 96.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:42,907 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:12:42,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:42,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:42,909 INFO L168 Benchmark]: Boogie Preprocessor took 31.63 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:42,909 INFO L168 Benchmark]: RCFGBuilder took 402.95 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:42,910 INFO L168 Benchmark]: TraceAbstraction took 2276.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:12:42,910 INFO L168 Benchmark]: Witness Printer took 84.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:12:42,913 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 295.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 108.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.63 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 402.95 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2276.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. * Witness Printer took 84.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant [2019-11-15 21:12:42,922 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,922 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,923 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,923 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,923 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,924 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((1bv32 == \result && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 14]: Loop Invariant [2019-11-15 21:12:42,924 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,926 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant [2019-11-15 21:12:42,927 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,927 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,928 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,928 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-15 21:12:42,929 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-15 21:12:42,930 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 58 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 4 QuantifiedInterpolants, 3317 SizeOfPredicates, 17 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...