./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 .................................................................................................................................................................................................................................................................................... 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_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 06:48:53,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:48:53,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:48:53,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:48:53,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:48:53,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:48:53,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:48:53,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:48:53,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:48:53,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:48:53,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:48:53,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:48:53,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:48:53,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:48:53,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:48:53,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:48:53,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:48:53,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:48:53,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:48:53,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:48:53,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:48:53,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:48:53,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:48:53,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:48:53,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:48:53,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:48:53,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:48:53,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:48:53,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:48:53,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:48:53,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:48:53,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:48:53,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:48:53,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:48:53,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:48:53,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:48:53,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:48:53,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:48:53,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:48:53,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:48:53,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:48:53,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 06:48:53,251 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:48:53,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:48:53,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:48:53,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:48:53,253 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:48:53,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:48:53,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:48:53,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:48:53,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:48:53,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:48:53,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:48:53,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:48:53,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:48:53,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:48:53,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:48:53,255 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:48:53,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:48:53,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:48:53,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:48:53,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:48:53,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:48:53,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:48:53,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:48:53,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:48:53,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:48:53,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:48:53,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:48:53,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:48:53,257 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_b1a0641c-521f-40b8-a831-7ac85599ace2/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2019-11-20 06:48:53,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:48:53,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:48:53,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:48:53,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:48:53,451 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:48:53,453 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-20 06:48:53,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/3f00df79c/295fa7a9e1124f5486118e70f044fc99/FLAGf75950d78 [2019-11-20 06:48:53,926 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:48:53,926 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-20 06:48:53,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/3f00df79c/295fa7a9e1124f5486118e70f044fc99/FLAGf75950d78 [2019-11-20 06:48:54,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/3f00df79c/295fa7a9e1124f5486118e70f044fc99 [2019-11-20 06:48:54,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:48:54,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:48:54,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:48:54,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:48:54,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:48:54,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee6fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54, skipping insertion in model container [2019-11-20 06:48:54,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,355 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:48:54,376 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:48:54,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:48:54,645 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:48:54,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:48:54,712 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:48:54,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54 WrapperNode [2019-11-20 06:48:54,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:48:54,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:48:54,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:48:54,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:48:54,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:48:54,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:48:54,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:48:54,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:48:54,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... [2019-11-20 06:48:54,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:48:54,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:48:54,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:48:54,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:48:54,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/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 [2019-11-20 06:48:54,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:48:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-20 06:48:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 06:48:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 06:48:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:48:54,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:48:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 06:48:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 06:48:55,283 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:48:55,284 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-20 06:48:55,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:48:55 BoogieIcfgContainer [2019-11-20 06:48:55,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:48:55,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:48:55,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:48:55,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:48:55,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:48:54" (1/3) ... [2019-11-20 06:48:55,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dbb18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:48:55, skipping insertion in model container [2019-11-20 06:48:55,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:54" (2/3) ... [2019-11-20 06:48:55,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dbb18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:48:55, skipping insertion in model container [2019-11-20 06:48:55,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:48:55" (3/3) ... [2019-11-20 06:48:55,292 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-11-20 06:48:55,301 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:48:55,307 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:48:55,318 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:48:55,341 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:48:55,341 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:48:55,342 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:48:55,342 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:48:55,342 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:48:55,342 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:48:55,342 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:48:55,342 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:48:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-20 06:48:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 06:48:55,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:48:55,365 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:48:55,365 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:48:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:48:55,372 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2019-11-20 06:48:55,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:48:55,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801798224] [2019-11-20 06:48:55,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:48:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:48:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:48:55,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801798224] [2019-11-20 06:48:55,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:48:55,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 06:48:55,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020486268] [2019-11-20 06:48:55,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 06:48:55,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:48:55,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 06:48:55,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 06:48:55,517 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-11-20 06:48:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:48:55,542 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-11-20 06:48:55,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 06:48:55,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 06:48:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:48:55,554 INFO L225 Difference]: With dead ends: 67 [2019-11-20 06:48:55,555 INFO L226 Difference]: Without dead ends: 31 [2019-11-20 06:48:55,562 INFO L630 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 [2019-11-20 06:48:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-20 06:48:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-20 06:48:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 06:48:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-20 06:48:55,603 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2019-11-20 06:48:55,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:48:55,604 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-20 06:48:55,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 06:48:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2019-11-20 06:48:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 06:48:55,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:48:55,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:48:55,606 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:48:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:48:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2019-11-20 06:48:55,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:48:55,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534155462] [2019-11-20 06:48:55,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:48:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:48:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:48:55,744 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:48:55,744 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 06:48:55,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:48:55 BoogieIcfgContainer [2019-11-20 06:48:55,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:48:55,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:48:55,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:48:55,772 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:48:55,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:48:55" (3/4) ... [2019-11-20 06:48:55,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 06:48:55,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:48:55,778 INFO L168 Benchmark]: Toolchain (without parser) took 1445.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -127.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-20 06:48:55,779 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:48:55,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:48:55,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.63 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. [2019-11-20 06:48:55,780 INFO L168 Benchmark]: Boogie Preprocessor took 64.53 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 06:48:55,781 INFO L168 Benchmark]: RCFGBuilder took 460.89 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-20 06:48:55,782 INFO L168 Benchmark]: TraceAbstraction took 485.75 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-20 06:48:55,782 INFO L168 Benchmark]: Witness Printer took 4.33 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. [2019-11-20 06:48:55,785 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 377.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.63 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 64.53 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 460.89 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 485.75 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.33 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: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L94] float res = __ieee754_sqrtf(x); [L13] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 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=35occurred 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 0.1.24-678e011 [2019-11-20 06:48:57,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:48:57,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:48:57,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:48:57,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:48:57,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:48:57,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:48:57,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:48:57,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:48:57,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:48:57,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:48:57,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:48:57,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:48:57,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:48:57,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:48:57,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:48:57,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:48:57,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:48:57,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:48:57,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:48:57,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:48:57,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:48:57,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:48:57,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:48:57,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:48:57,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:48:57,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:48:57,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:48:57,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:48:57,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:48:57,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:48:57,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:48:57,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:48:57,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:48:57,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:48:57,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:48:57,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:48:57,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:48:57,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:48:57,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:48:57,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:48:57,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 06:48:57,880 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:48:57,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:48:57,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:48:57,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:48:57,883 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:48:57,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:48:57,883 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:48:57,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:48:57,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:48:57,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:48:57,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:48:57,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:48:57,885 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 06:48:57,886 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 06:48:57,886 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:48:57,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:48:57,886 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:48:57,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:48:57,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:48:57,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:48:57,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:48:57,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:48:57,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:48:57,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:48:57,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:48:57,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:48:57,889 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 06:48:57,889 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 06:48:57,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:48:57,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 06:48:57,890 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_b1a0641c-521f-40b8-a831-7ac85599ace2/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2019-11-20 06:48:58,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:48:58,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:48:58,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:48:58,165 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:48:58,166 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:48:58,167 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-20 06:48:58,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/9b4eb49c9/3e33c0fc96b14a48907df3e40af072c9/FLAG0ed95cd14 [2019-11-20 06:48:58,626 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:48:58,627 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-20 06:48:58,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/9b4eb49c9/3e33c0fc96b14a48907df3e40af072c9/FLAG0ed95cd14 [2019-11-20 06:48:58,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/bin/uautomizer/data/9b4eb49c9/3e33c0fc96b14a48907df3e40af072c9 [2019-11-20 06:48:58,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:48:58,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:48:58,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:48:58,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:48:58,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:48:58,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:48:58" (1/1) ... [2019-11-20 06:48:58,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6a122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:58, skipping insertion in model container [2019-11-20 06:48:58,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:48:58" (1/1) ... [2019-11-20 06:48:58,996 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:48:59,014 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:48:59,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:48:59,226 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:48:59,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:48:59,330 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:48:59,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59 WrapperNode [2019-11-20 06:48:59,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:48:59,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:48:59,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:48:59,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:48:59,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:48:59,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:48:59,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:48:59,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:48:59,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... [2019-11-20 06:48:59,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:48:59,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:48:59,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:48:59,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:48:59,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/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 [2019-11-20 06:48:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:48:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-20 06:48:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 06:48:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:48:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:48:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-20 06:48:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 06:48:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 06:49:00,274 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:49:00,274 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-20 06:49:00,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:49:00 BoogieIcfgContainer [2019-11-20 06:49:00,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:49:00,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:49:00,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:49:00,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:49:00,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:48:58" (1/3) ... [2019-11-20 06:49:00,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381e79ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:49:00, skipping insertion in model container [2019-11-20 06:49:00,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:59" (2/3) ... [2019-11-20 06:49:00,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381e79ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:49:00, skipping insertion in model container [2019-11-20 06:49:00,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:49:00" (3/3) ... [2019-11-20 06:49:00,282 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-11-20 06:49:00,289 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:49:00,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:49:00,302 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:49:00,324 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:49:00,324 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:49:00,324 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:49:00,324 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:49:00,325 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:49:00,325 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:49:00,325 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:49:00,325 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:49:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-20 06:49:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 06:49:00,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:49:00,345 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:49:00,345 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:49:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:49:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2019-11-20 06:49:00,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:49:00,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057382059] [2019-11-20 06:49:00,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/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 [2019-11-20 06:49:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:49:00,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 06:49:00,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:49:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:49:00,544 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 06:49:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:49:00,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057382059] [2019-11-20 06:49:00,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:49:00,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 06:49:00,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510538552] [2019-11-20 06:49:00,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 06:49:00,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 06:49:00,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 06:49:00,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 06:49:00,566 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-11-20 06:49:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:49:00,585 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-11-20 06:49:00,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 06:49:00,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 06:49:00,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:49:00,596 INFO L225 Difference]: With dead ends: 67 [2019-11-20 06:49:00,596 INFO L226 Difference]: Without dead ends: 31 [2019-11-20 06:49:00,599 INFO L630 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 [2019-11-20 06:49:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-20 06:49:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-20 06:49:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 06:49:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-20 06:49:00,632 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2019-11-20 06:49:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:49:00,632 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-20 06:49:00,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 06:49:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2019-11-20 06:49:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 06:49:00,633 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:49:00,633 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:49:00,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 06:49:00,847 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:49:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:49:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2019-11-20 06:49:00,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:49:00,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011212893] [2019-11-20 06:49:00,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a0641c-521f-40b8-a831-7ac85599ace2/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 [2019-11-20 06:49:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:49:01,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 06:49:01,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:49:10,058 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 06:49:10,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 06:49:10,260 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 41 more [2019-11-20 06:49:10,269 INFO L168 Benchmark]: Toolchain (without parser) took 11283.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -128.6 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:49:10,269 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:49:10,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 955.1 MB in the beginning and 1.2 GB in the end (delta: -205.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-20 06:49:10,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:49:10,272 INFO L168 Benchmark]: Boogie Preprocessor took 38.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:49:10,273 INFO L168 Benchmark]: RCFGBuilder took 866.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2019-11-20 06:49:10,273 INFO L168 Benchmark]: TraceAbstraction took 9986.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2019-11-20 06:49:10,282 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 955.1 MB in the beginning and 1.2 GB in the end (delta: -205.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 866.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9986.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...