./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:04:14,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:14,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:14,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:14,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:14,226 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:14,228 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:14,230 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:14,232 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:14,233 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:14,234 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:14,235 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:14,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:14,237 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:14,239 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:14,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:14,249 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:14,253 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:14,256 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:14,258 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:14,259 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:14,260 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:14,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:14,264 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:14,265 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:14,266 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:14,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:14,270 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:14,271 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:14,272 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:14,272 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:14,273 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:14,273 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:14,273 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:14,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:14,277 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:14,278 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:04:14,301 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:14,301 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:14,302 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:14,302 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:14,303 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:14,303 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:14,303 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:14,304 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:14,304 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:14,304 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:04:14,304 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:14,304 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:14,305 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:14,305 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:14,306 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:14,306 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:14,306 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:14,306 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:14,306 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:14,307 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:14,307 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:14,307 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:14,307 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:14,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:14,307 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:14,309 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:14,309 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:14,309 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:04:14,309 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:14,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:04:14,310 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-11-28 18:04:14,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:14,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:14,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:14,381 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:14,382 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:14,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-28 18:04:14,448 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8393224f/94e07256dc4f40b3b18f963d2bd5b61f/FLAG1f3b41a36 [2018-11-28 18:04:14,876 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:14,877 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-28 18:04:14,884 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8393224f/94e07256dc4f40b3b18f963d2bd5b61f/FLAG1f3b41a36 [2018-11-28 18:04:15,253 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8393224f/94e07256dc4f40b3b18f963d2bd5b61f [2018-11-28 18:04:15,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:15,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:15,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:15,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:15,263 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:15,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571696fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15, skipping insertion in model container [2018-11-28 18:04:15,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:15,301 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:15,545 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:15,549 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:15,578 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:15,601 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:15,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15 WrapperNode [2018-11-28 18:04:15,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:15,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:15,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:15,603 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:15,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:15,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:15,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:15,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:15,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... [2018-11-28 18:04:15,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:15,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:15,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:15,660 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:15,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:04:15,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:04:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:04:15,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:04:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:04:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:04:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:04:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:04:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:04:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:04:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:04:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-28 18:04:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-28 18:04:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:04:15,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:04:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:04:16,276 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:04:16,276 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:04:16,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:16 BoogieIcfgContainer [2018-11-28 18:04:16,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:04:16,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:04:16,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:04:16,282 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:04:16,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:15" (1/3) ... [2018-11-28 18:04:16,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3955b1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:16, skipping insertion in model container [2018-11-28 18:04:16,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:15" (2/3) ... [2018-11-28 18:04:16,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3955b1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:16, skipping insertion in model container [2018-11-28 18:04:16,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:16" (3/3) ... [2018-11-28 18:04:16,286 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-11-28 18:04:16,296 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:16,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:04:16,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:04:16,352 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:16,352 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:16,353 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:16,353 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:16,353 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:16,353 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:16,354 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:16,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:16,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-28 18:04:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:04:16,382 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:16,383 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:16,385 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:16,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2093385797, now seen corresponding path program 1 times [2018-11-28 18:04:16,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:16,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:16,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:16,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:16,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:16,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:16,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:16,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:16,564 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-28 18:04:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:16,595 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-28 18:04:16,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:16,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-28 18:04:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:16,608 INFO L225 Difference]: With dead ends: 71 [2018-11-28 18:04:16,608 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:04:16,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:04:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 18:04:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 18:04:16,660 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-28 18:04:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:16,661 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 18:04:16,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 18:04:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 18:04:16,665 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:16,665 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:16,666 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:16,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:16,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1590914468, now seen corresponding path program 1 times [2018-11-28 18:04:16,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:16,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:16,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:16,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:16,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:16,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:16,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:16,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:16,918 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 18:04:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:17,088 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-28 18:04:17,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:17,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 18:04:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:17,094 INFO L225 Difference]: With dead ends: 51 [2018-11-28 18:04:17,094 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:04:17,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:04:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:04:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:04:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 18:04:17,108 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-28 18:04:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:17,108 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 18:04:17,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 18:04:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 18:04:17,111 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:17,111 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:17,112 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:17,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:17,113 INFO L82 PathProgramCache]: Analyzing trace with hash 87255330, now seen corresponding path program 1 times [2018-11-28 18:04:17,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:17,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:17,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:17,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:17,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:17,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:17,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:17,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:17,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:17,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:17,226 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 18:04:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:17,351 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-28 18:04:17,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:17,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 18:04:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:17,355 INFO L225 Difference]: With dead ends: 55 [2018-11-28 18:04:17,355 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:04:17,356 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:04:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-28 18:04:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:04:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 18:04:17,365 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-28 18:04:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:17,365 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 18:04:17,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 18:04:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 18:04:17,368 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:17,368 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:17,368 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:17,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1594807139, now seen corresponding path program 1 times [2018-11-28 18:04:17,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:17,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:17,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:17,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:17,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:04:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:04:17,455 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:04:17,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:17 BoogieIcfgContainer [2018-11-28 18:04:17,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:17,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:17,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:17,497 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:17,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:16" (3/4) ... [2018-11-28 18:04:17,503 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:04:17,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:17,504 INFO L168 Benchmark]: Toolchain (without parser) took 2246.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -90.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:17,506 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:17,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.62 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:17,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.69 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:17,508 INFO L168 Benchmark]: Boogie Preprocessor took 29.82 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:17,509 INFO L168 Benchmark]: RCFGBuilder took 617.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:17,510 INFO L168 Benchmark]: TraceAbstraction took 1217.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:17,512 INFO L168 Benchmark]: Witness Printer took 6.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:17,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 342.62 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 26.69 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.82 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 617.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1217.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.62 ms. Allocated memory is still 1.1 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095045, \old(y)=2139095042] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045] [L20] __uint32_t w; VAL [\old(x)=2139095045, x=2139095045] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=2139095045, \result=0, w=2139095041, x=2139095045] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095045, y=2139095042] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=2139095045, \old(y)=2139095042, \result=2139095042, x=2139095045, y=2139095042] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=2139095045, y=2139095042] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095042] [L54] return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095042, x=2139095045, y=2139095042] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=2139095042, x=2139095045, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:04:19,914 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:19,916 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:19,933 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:19,933 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:19,934 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:19,936 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:19,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:19,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:19,949 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:19,950 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:19,950 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:19,952 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:19,953 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:19,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:19,955 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:19,956 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:19,958 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:19,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:19,965 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:19,966 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:19,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:19,970 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:19,970 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:19,970 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:19,971 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:19,972 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:19,973 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:19,974 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:19,975 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:19,975 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:19,976 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:19,977 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:19,977 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:19,978 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:19,978 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:19,979 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:04:19,994 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:19,995 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:19,995 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:19,996 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:19,997 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:19,997 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:19,997 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:19,997 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:19,997 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:19,998 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:19,998 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:19,998 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:19,998 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:19,998 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:19,998 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:04:20,000 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:04:20,000 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:20,000 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:20,001 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:20,001 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:20,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:20,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:20,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:20,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:20,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:20,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:20,003 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:20,003 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:20,004 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:04:20,004 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:20,005 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:04:20,005 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:04:20,005 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-11-28 18:04:20,070 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:20,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:20,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:20,098 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:20,098 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:20,099 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-28 18:04:20,161 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e40c48f7/bc7f354daf46484ea8ca784731dffce3/FLAG17901f3b2 [2018-11-28 18:04:20,652 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:20,653 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-28 18:04:20,662 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e40c48f7/bc7f354daf46484ea8ca784731dffce3/FLAG17901f3b2 [2018-11-28 18:04:20,993 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e40c48f7/bc7f354daf46484ea8ca784731dffce3 [2018-11-28 18:04:20,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:20,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:20,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:20,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:21,003 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:21,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:21,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378c2da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21, skipping insertion in model container [2018-11-28 18:04:21,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:21,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:21,039 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:21,279 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:21,289 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:21,318 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:21,345 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21 WrapperNode [2018-11-28 18:04:21,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:21,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:21,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:21,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:21,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:21,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:21,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:21,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:21,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... [2018-11-28 18:04:21,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:21,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:21,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:21,494 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:21,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:04:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:04:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:04:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:04:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:04:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:04:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:04:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:04:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:04:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-28 18:04:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-28 18:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:04:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:04:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:04:21,977 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:04:22,046 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:04:22,046 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:04:22,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:22 BoogieIcfgContainer [2018-11-28 18:04:22,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:04:22,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:04:22,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:04:22,052 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:04:22,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:20" (1/3) ... [2018-11-28 18:04:22,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21aaef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:22, skipping insertion in model container [2018-11-28 18:04:22,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:21" (2/3) ... [2018-11-28 18:04:22,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21aaef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:22, skipping insertion in model container [2018-11-28 18:04:22,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:22" (3/3) ... [2018-11-28 18:04:22,056 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-11-28 18:04:22,067 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:22,076 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:04:22,093 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:04:22,127 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:22,128 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:22,128 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:22,129 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:22,129 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:22,129 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:22,129 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:22,130 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:22,130 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-28 18:04:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:04:22,157 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,158 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,160 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1373398522, now seen corresponding path program 1 times [2018-11-28 18:04:22,170 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,171 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:22,272 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:22,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:22,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:22,305 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-28 18:04:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,331 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-28 18:04:22,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:22,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-28 18:04:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,342 INFO L225 Difference]: With dead ends: 65 [2018-11-28 18:04:22,343 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 18:04:22,346 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 18:04:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 18:04:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:04:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-28 18:04:22,400 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-28 18:04:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,401 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-28 18:04:22,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-28 18:04:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:04:22,403 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,403 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,404 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,404 INFO L82 PathProgramCache]: Analyzing trace with hash 570225154, now seen corresponding path program 1 times [2018-11-28 18:04:22,405 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,405 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:22,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:22,529 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,545 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-28 18:04:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,660 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-28 18:04:22,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 18:04:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,666 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:04:22,666 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:04:22,667 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:04:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 18:04:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 18:04:22,679 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-28 18:04:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,680 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 18:04:22,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 18:04:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:04:22,682 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,682 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,682 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1732831305, now seen corresponding path program 1 times [2018-11-28 18:04:22,684 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,685 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:22,820 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,835 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 18:04:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,871 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 18:04:22,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 18:04:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,874 INFO L225 Difference]: With dead ends: 49 [2018-11-28 18:04:22,874 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:22,875 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:22,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 18:04:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 18:04:22,887 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-28 18:04:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,888 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 18:04:22,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 18:04:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 18:04:22,889 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,890 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,890 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2054695706, now seen corresponding path program 1 times [2018-11-28 18:04:22,891 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,891 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:23,104 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:23,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:23,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:23,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:23,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:23,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:23,122 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 18:04:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:23,157 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 18:04:23,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:23,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 18:04:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:23,159 INFO L225 Difference]: With dead ends: 49 [2018-11-28 18:04:23,160 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:23,160 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 18:04:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 18:04:23,168 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-28 18:04:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:23,169 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 18:04:23,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 18:04:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 18:04:23,171 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:23,172 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:23,172 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:23,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash -382560787, now seen corresponding path program 1 times [2018-11-28 18:04:23,173 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:23,173 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:23,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:23,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:23,262 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:23,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:23,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:23,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:23,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:23,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:23,275 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 18:04:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:23,397 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 18:04:23,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:23,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-28 18:04:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:23,400 INFO L225 Difference]: With dead ends: 49 [2018-11-28 18:04:23,403 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:23,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:23,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 18:04:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 18:04:23,417 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-28 18:04:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:23,417 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 18:04:23,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 18:04:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 18:04:23,420 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:23,420 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:23,420 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:23,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:23,421 INFO L82 PathProgramCache]: Analyzing trace with hash -675963794, now seen corresponding path program 1 times [2018-11-28 18:04:23,421 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:23,423 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:23,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:23,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:23,905 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:23,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:23,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 18:04:23,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 18:04:23,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 18:04:23,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:23,919 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-28 18:04:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:24,660 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-28 18:04:24,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:04:24,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-28 18:04:24,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:24,663 INFO L225 Difference]: With dead ends: 43 [2018-11-28 18:04:24,663 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:04:24,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:04:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-28 18:04:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:04:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-28 18:04:24,671 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-28 18:04:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:24,671 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-28 18:04:24,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 18:04:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-28 18:04:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 18:04:24,674 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:24,674 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:24,674 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:24,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash 61144778, now seen corresponding path program 1 times [2018-11-28 18:04:24,675 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:24,675 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:24,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:24,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:04:24,782 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:24,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:24,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:24,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:24,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:24,797 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-28 18:04:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:24,857 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-28 18:04:24,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:24,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-28 18:04:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:24,860 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:04:24,860 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:04:24,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:04:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 18:04:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 18:04:24,868 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-28 18:04:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:24,868 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 18:04:24,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 18:04:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 18:04:24,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:24,871 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:24,871 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:24,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1308604645, now seen corresponding path program 1 times [2018-11-28 18:04:24,873 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:24,873 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:24,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:24,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:04:24,986 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:24,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:24,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:24,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:24,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:24,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:24,999 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 18:04:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:25,073 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-28 18:04:25,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:25,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-28 18:04:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:25,075 INFO L225 Difference]: With dead ends: 49 [2018-11-28 18:04:25,075 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:25,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 18:04:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 18:04:25,082 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-28 18:04:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:25,083 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 18:04:25,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 18:04:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 18:04:25,084 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:25,084 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:25,084 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:25,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash 922408263, now seen corresponding path program 1 times [2018-11-28 18:04:25,085 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:25,085 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:25,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:25,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:25,427 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 18:04:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:04:25,475 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:25,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:25,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-28 18:04:25,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:04:25,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:04:25,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:04:25,492 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-11-28 18:04:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:25,872 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-28 18:04:25,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:25,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-28 18:04:25,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:25,875 INFO L225 Difference]: With dead ends: 44 [2018-11-28 18:04:25,875 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:04:25,875 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:04:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:04:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 18:04:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:04:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-28 18:04:25,881 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-28 18:04:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:25,882 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-28 18:04:25,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:04:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-28 18:04:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 18:04:25,883 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:25,884 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:25,884 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:25,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash 221343685, now seen corresponding path program 1 times [2018-11-28 18:04:25,886 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:25,886 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:25,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:25,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:04:26,055 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:26,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:26,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:04:26,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:04:26,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:04:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:04:26,075 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-28 18:04:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:26,219 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-11-28 18:04:26,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:04:26,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 18:04:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:26,222 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:04:26,222 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 18:04:26,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:04:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 18:04:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 18:04:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:04:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 18:04:26,230 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 18:04:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:26,230 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 18:04:26,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:04:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 18:04:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 18:04:26,233 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:26,233 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:26,234 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:26,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:26,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1994775826, now seen corresponding path program 1 times [2018-11-28 18:04:26,235 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:26,235 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:26,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:26,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:04:26,310 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:26,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:26,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:26,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:26,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:26,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:26,325 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 18:04:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:26,359 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 18:04:26,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:26,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-28 18:04:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:26,362 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:04:26,362 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:04:26,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:04:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 18:04:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:04:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 18:04:26,368 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 18:04:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:26,368 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 18:04:26,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:26,368 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 18:04:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:04:26,369 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:26,369 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:26,370 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:26,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:26,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1330109311, now seen corresponding path program 1 times [2018-11-28 18:04:26,370 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:26,370 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:26,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:26,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:04:26,525 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:26,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:26,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:26,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:26,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:26,536 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 18:04:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:26,597 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 18:04:26,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:26,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 18:04:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:26,599 INFO L225 Difference]: With dead ends: 46 [2018-11-28 18:04:26,599 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 18:04:26,600 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 18:04:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 18:04:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:04:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 18:04:26,605 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-28 18:04:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:26,605 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 18:04:26,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 18:04:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:04:26,606 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:26,607 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:26,607 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:26,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1036706304, now seen corresponding path program 1 times [2018-11-28 18:04:26,611 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:26,612 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:26,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:26,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:04:26,905 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:26,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:26,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 18:04:26,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 18:04:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 18:04:26,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:26,917 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-28 18:04:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:27,163 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 18:04:27,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:04:27,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-28 18:04:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:27,164 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:04:27,164 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:04:27,165 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:04:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:04:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:04:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:04:27,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 18:04:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:27,168 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:04:27,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 18:04:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:04:27,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:04:27,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:04:27,515 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-11-28 18:04:27,516 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-11-28 18:04:27,516 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-11-28 18:04:27,516 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:27,516 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:27,516 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:27,517 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:27,517 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:04:27,517 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:27,517 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:27,517 INFO L448 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-11-28 18:04:27,517 INFO L444 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-11-28 18:04:27,517 INFO L448 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-11-28 18:04:27,518 INFO L444 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-11-28 18:04:27,518 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-11-28 18:04:27,518 INFO L448 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-11-28 18:04:27,518 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-11-28 18:04:27,518 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-11-28 18:04:27,518 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-11-28 18:04:27,518 INFO L448 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-11-28 18:04:27,518 INFO L451 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-11-28 18:04:27,518 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L444 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-11-28 18:04:27,519 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-11-28 18:04:27,520 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-11-28 18:04:27,520 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-11-28 18:04:27,520 INFO L451 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: true [2018-11-28 18:04:27,520 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2018-11-28 18:04:27,520 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-11-28 18:04:27,520 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-11-28 18:04:27,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:27 BoogieIcfgContainer [2018-11-28 18:04:27,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:27,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:27,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:27,529 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:27,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:22" (3/4) ... [2018-11-28 18:04:27,533 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:04:27,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-28 18:04:27,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:04:27,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:04:27,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-11-28 18:04:27,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-28 18:04:27,545 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-28 18:04:27,545 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 18:04:27,545 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:04:27,602 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:04:27,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:27,603 INFO L168 Benchmark]: Toolchain (without parser) took 6606.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 954.0 MB in the beginning and 1.2 GB in the end (delta: -230.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:27,604 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:27,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.11 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:27,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.72 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 937.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:27,608 INFO L168 Benchmark]: Boogie Preprocessor took 112.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:27,609 INFO L168 Benchmark]: RCFGBuilder took 553.15 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:27,612 INFO L168 Benchmark]: TraceAbstraction took 5480.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.6 MB). Peak memory consumption was 301.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:27,612 INFO L168 Benchmark]: Witness Printer took 74.08 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-28 18:04:27,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.11 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 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 34.72 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 937.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 112.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 553.15 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5480.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.6 MB). Peak memory consumption was 301.2 MB. Max. memory is 11.5 GB. * Witness Printer took 74.08 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: 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: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 5.4s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1091 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...