./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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_1252b_false-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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 .................................................................................................................................................................................................................................................................................................................................................... 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_1252b_false-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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 09:17:29,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:17:29,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:17:29,966 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:17:29,966 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:17:29,967 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:17:29,969 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:17:29,970 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:17:29,972 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:17:29,973 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:17:29,974 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:17:29,974 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:17:29,975 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:17:29,976 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:17:29,977 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:17:29,978 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:17:29,979 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:17:29,981 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:17:29,983 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:17:29,985 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:17:29,986 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:17:29,987 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:17:29,990 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:17:29,990 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:29,991 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:29,992 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:29,993 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:29,994 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:29,994 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:29,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:29,996 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:29,997 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:29,997 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:29,997 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:29,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:29,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:29,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 09:17:30,020 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:30,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:30,022 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:30,022 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:30,022 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:30,023 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:30,024 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:30,024 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 09:17:30,024 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:30,024 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:30,024 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:30,024 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:30,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:30,026 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:30,026 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:30,026 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:30,026 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:30,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:30,027 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:30,027 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:30,028 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:30,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:30,028 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:30,028 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:30,028 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:30,028 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 09:17:30,029 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:30,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 09:17:30,029 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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2019-01-12 09:17:30,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:30,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:30,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:30,094 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:30,095 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:30,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:30,154 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e28aba8/0b57a012888a43b4bd744cb00bc889ff/FLAG52acbacfe [2019-01-12 09:17:30,536 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:30,537 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:30,542 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e28aba8/0b57a012888a43b4bd744cb00bc889ff/FLAG52acbacfe [2019-01-12 09:17:30,953 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e28aba8/0b57a012888a43b4bd744cb00bc889ff [2019-01-12 09:17:30,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:30,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:30,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:30,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:30,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:30,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:30" (1/1) ... [2019-01-12 09:17:30,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aef9ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:30, skipping insertion in model container [2019-01-12 09:17:30,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:30" (1/1) ... [2019-01-12 09:17:30,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:31,002 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:31,279 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:31,286 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:31,329 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:31,375 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31 WrapperNode [2019-01-12 09:17:31,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:31,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:31,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:31,378 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:31,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:31,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:31,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:31,440 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:31,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (1/1) ... [2019-01-12 09:17:31,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:31,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:31,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:31,541 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:31,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (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 [2019-01-12 09:17:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:17:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-01-12 09:17:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-12 09:17:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:17:32,262 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:32,263 INFO L286 CfgBuilder]: Removed 18 assue(true) statements. [2019-01-12 09:17:32,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:32 BoogieIcfgContainer [2019-01-12 09:17:32,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:32,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:32,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:32,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:32,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:30" (1/3) ... [2019-01-12 09:17:32,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b433c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:32, skipping insertion in model container [2019-01-12 09:17:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:31" (2/3) ... [2019-01-12 09:17:32,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b433c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:32, skipping insertion in model container [2019-01-12 09:17:32,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:32" (3/3) ... [2019-01-12 09:17:32,276 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:32,288 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:32,297 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:32,316 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:32,349 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:32,350 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:32,350 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:32,350 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:32,351 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:32,351 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:32,351 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:32,352 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:32,352 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-01-12 09:17:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:17:32,377 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:32,379 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:32,381 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:32,388 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-01-12 09:17:32,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:32,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:32,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:32,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:32,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:32,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:32,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:32,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:32,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:32,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:32,551 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-01-12 09:17:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:32,573 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-01-12 09:17:32,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:32,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:17:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:32,587 INFO L225 Difference]: With dead ends: 62 [2019-01-12 09:17:32,588 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:32,591 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 [2019-01-12 09:17:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-01-12 09:17:32,634 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-01-12 09:17:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:32,635 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-01-12 09:17:32,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-01-12 09:17:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:17:32,636 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:32,636 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:32,636 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-01-12 09:17:32,638 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:32,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:32,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:32,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:32,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:32,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:32,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:32,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:32,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:32,758 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-01-12 09:17:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:32,915 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-01-12 09:17:32,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:32,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:17:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:32,917 INFO L225 Difference]: With dead ends: 53 [2019-01-12 09:17:32,917 INFO L226 Difference]: Without dead ends: 44 [2019-01-12 09:17:32,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-01-12 09:17:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-01-12 09:17:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:32,927 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-01-12 09:17:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:32,927 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:32,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:17:32,929 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:32,929 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:32,930 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-01-12 09:17:32,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:32,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:32,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:32,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:32,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:33,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:33,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:33,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:33,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:33,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:33,040 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-01-12 09:17:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:33,250 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-01-12 09:17:33,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:33,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-12 09:17:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:33,252 INFO L225 Difference]: With dead ends: 55 [2019-01-12 09:17:33,252 INFO L226 Difference]: Without dead ends: 46 [2019-01-12 09:17:33,253 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-01-12 09:17:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-01-12 09:17:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:33,261 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-01-12 09:17:33,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:33,261 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:33,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:17:33,262 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:33,263 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:33,263 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:33,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:33,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-01-12 09:17:33,265 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:33,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:33,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:33,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:33,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:33,331 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:33,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:33 BoogieIcfgContainer [2019-01-12 09:17:33,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:33,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:33,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:33,358 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:33,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:32" (3/4) ... [2019-01-12 09:17:33,363 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 09:17:33,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:33,364 INFO L168 Benchmark]: Toolchain (without parser) took 2403.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -86.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:33,366 INFO L168 Benchmark]: CDTParser took 0.48 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. [2019-01-12 09:17:33,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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. [2019-01-12 09:17:33,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.75 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. [2019-01-12 09:17:33,368 INFO L168 Benchmark]: Boogie Preprocessor took 100.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:33,369 INFO L168 Benchmark]: RCFGBuilder took 723.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:33,370 INFO L168 Benchmark]: TraceAbstraction took 1091.78 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: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:33,372 INFO L168 Benchmark]: Witness Printer took 5.06 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. [2019-01-12 09:17:33,378 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 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 414.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 62.75 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. * Boogie Preprocessor took 100.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 723.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1091.78 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: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.06 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 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 0.1.24-0ed9222-m [2019-01-12 09:17:35,614 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2019-01-12 09:17:35,664 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:35,664 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:35,668 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:35,669 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:35,670 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:35,670 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:35,671 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:35,674 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:35,675 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:35,675 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:35,675 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:35,676 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:35,677 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:35,677 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 09:17:35,692 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:35,692 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:35,694 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:35,694 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:35,694 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:35,694 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:35,695 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:35,695 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:35,695 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:35,696 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:35,697 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:35,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:35,697 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:35,697 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:35,697 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:35,698 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:35,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:35,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:35,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:35,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:35,700 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 09:17:35,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:35,700 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 09:17:35,700 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 09:17:35,700 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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2019-01-12 09:17:35,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:35,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:35,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:35,755 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:35,755 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:35,756 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:35,813 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaa93121/e85a3e5a24f54e149a5a365dea6c2826/FLAG63bc7411a [2019-01-12 09:17:36,207 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:36,208 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:36,215 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaa93121/e85a3e5a24f54e149a5a365dea6c2826/FLAG63bc7411a [2019-01-12 09:17:36,667 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaa93121/e85a3e5a24f54e149a5a365dea6c2826 [2019-01-12 09:17:36,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:36,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:36,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:36,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:36,680 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:36,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:36,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124842ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36, skipping insertion in model container [2019-01-12 09:17:36,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:36,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:36,716 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:36,899 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:36,909 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:36,939 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:36,966 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:36,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36 WrapperNode [2019-01-12 09:17:36,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:36,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:36,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:36,968 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:36,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:36,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:37,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:37,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:37,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:37,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (1/1) ... [2019-01-12 09:17:37,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:37,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:37,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:37,173 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:37,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (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 [2019-01-12 09:17:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:17:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-12 09:17:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-01-12 09:17:37,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:17:37,564 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:37,793 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:37,926 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:37,981 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:37,981 INFO L286 CfgBuilder]: Removed 18 assue(true) statements. [2019-01-12 09:17:37,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:37 BoogieIcfgContainer [2019-01-12 09:17:37,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:37,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:37,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:37,988 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:37,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:36" (1/3) ... [2019-01-12 09:17:37,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aecd51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:37, skipping insertion in model container [2019-01-12 09:17:37,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:36" (2/3) ... [2019-01-12 09:17:37,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aecd51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:37, skipping insertion in model container [2019-01-12 09:17:37,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:37" (3/3) ... [2019-01-12 09:17:37,993 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:38,004 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:38,013 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:38,031 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:38,063 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:38,064 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:38,064 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:38,065 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:38,065 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:38,065 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:38,065 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:38,065 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:38,066 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-01-12 09:17:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:17:38,088 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:38,089 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:38,091 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:38,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:38,096 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-01-12 09:17:38,099 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:38,099 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 [2019-01-12 09:17:38,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:38,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:38,164 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:38,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:38,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:38,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:38,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:38,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:38,197 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-01-12 09:17:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:38,214 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-01-12 09:17:38,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:38,216 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:17:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:38,228 INFO L225 Difference]: With dead ends: 62 [2019-01-12 09:17:38,228 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:38,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-01-12 09:17:38,271 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-01-12 09:17:38,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:38,271 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-01-12 09:17:38,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:38,272 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-01-12 09:17:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:17:38,273 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:38,273 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:38,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-01-12 09:17:38,275 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:38,275 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:38,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:38,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:38,400 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:38,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:38,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:38,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:38,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:38,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:38,418 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-01-12 09:17:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:38,764 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-01-12 09:17:38,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:38,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:17:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:38,766 INFO L225 Difference]: With dead ends: 53 [2019-01-12 09:17:38,767 INFO L226 Difference]: Without dead ends: 44 [2019-01-12 09:17:38,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-01-12 09:17:38,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-01-12 09:17:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:38,775 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-01-12 09:17:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:38,776 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:38,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:38,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-12 09:17:38,776 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:38,777 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:38,778 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:38,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:38,779 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2019-01-12 09:17:38,779 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:38,779 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 [2019-01-12 09:17:38,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:38,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:38,874 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:38,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:38,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:38,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:38,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:38,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:38,888 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-01-12 09:17:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:39,034 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2019-01-12 09:17:39,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:39,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-12 09:17:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:39,037 INFO L225 Difference]: With dead ends: 50 [2019-01-12 09:17:39,037 INFO L226 Difference]: Without dead ends: 26 [2019-01-12 09:17:39,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-01-12 09:17:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-01-12 09:17:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-12 09:17:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-01-12 09:17:39,045 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2019-01-12 09:17:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:39,045 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-01-12 09:17:39,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-01-12 09:17:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-12 09:17:39,048 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:39,048 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:39,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-01-12 09:17:39,050 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:39,050 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) [2019-01-12 09:17:39,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:39,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:39,292 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:39,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:39,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:39,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:39,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:39,312 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2019-01-12 09:17:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:39,426 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2019-01-12 09:17:39,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:39,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-12 09:17:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:39,429 INFO L225 Difference]: With dead ends: 48 [2019-01-12 09:17:39,429 INFO L226 Difference]: Without dead ends: 39 [2019-01-12 09:17:39,430 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-01-12 09:17:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2019-01-12 09:17:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-12 09:17:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-01-12 09:17:39,436 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-01-12 09:17:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:39,437 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-01-12 09:17:39,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-01-12 09:17:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-12 09:17:39,438 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:39,439 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:39,439 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:39,439 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2019-01-12 09:17:39,441 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:39,441 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 [2019-01-12 09:17:39,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:39,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:39,572 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:39,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:39,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-12 09:17:39,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-12 09:17:39,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-12 09:17:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:39,583 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2019-01-12 09:17:39,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:39,707 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-01-12 09:17:39,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 09:17:39,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-12 09:17:39,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:39,710 INFO L225 Difference]: With dead ends: 39 [2019-01-12 09:17:39,710 INFO L226 Difference]: Without dead ends: 23 [2019-01-12 09:17:39,711 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-12 09:17:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-12 09:17:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-12 09:17:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-12 09:17:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-01-12 09:17:39,718 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2019-01-12 09:17:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:39,718 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-01-12 09:17:39,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-12 09:17:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-01-12 09:17:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:39,721 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:39,721 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:39,721 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-01-12 09:17:39,723 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:39,723 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 [2019-01-12 09:17:39,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:39,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:39,802 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:39,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:39,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 09:17:39,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 09:17:39,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 09:17:39,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 09:17:39,816 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2019-01-12 09:17:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:39,831 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-01-12 09:17:39,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 09:17:39,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-01-12 09:17:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:39,834 INFO L225 Difference]: With dead ends: 33 [2019-01-12 09:17:39,834 INFO L226 Difference]: Without dead ends: 23 [2019-01-12 09:17:39,835 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 09:17:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-12 09:17:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-12 09:17:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-12 09:17:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-01-12 09:17:39,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2019-01-12 09:17:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:39,843 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-01-12 09:17:39,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 09:17:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-01-12 09:17:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:39,843 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:39,845 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:39,845 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:39,845 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-01-12 09:17:39,846 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:39,846 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 [2019-01-12 09:17:39,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:39,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:40,043 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:40,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:40,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 09:17:40,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 09:17:40,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 09:17:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-12 09:17:40,057 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2019-01-12 09:17:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:40,189 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2019-01-12 09:17:40,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-12 09:17:40,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-01-12 09:17:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:40,191 INFO L225 Difference]: With dead ends: 26 [2019-01-12 09:17:40,192 INFO L226 Difference]: Without dead ends: 23 [2019-01-12 09:17:40,192 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-01-12 09:17:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-12 09:17:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-12 09:17:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-12 09:17:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-01-12 09:17:40,199 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2019-01-12 09:17:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:40,199 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-01-12 09:17:40,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 09:17:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-01-12 09:17:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-12 09:17:40,200 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:40,200 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] [2019-01-12 09:17:40,201 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:40,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-01-12 09:17:40,203 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:40,204 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) [2019-01-12 09:17:40,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:40,500 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:40,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:40 BoogieIcfgContainer [2019-01-12 09:17:40,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:40,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:40,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:40,559 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:40,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:37" (3/4) ... [2019-01-12 09:17:40,562 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 09:17:40,619 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 09:17:40,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:40,620 INFO L168 Benchmark]: Toolchain (without parser) took 3947.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.4 MB in the beginning and 958.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:40,624 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. [2019-01-12 09:17:40,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.51 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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. [2019-01-12 09:17:40,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.20 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:40,627 INFO L168 Benchmark]: Boogie Preprocessor took 147.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:40,628 INFO L168 Benchmark]: RCFGBuilder took 812.42 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:40,631 INFO L168 Benchmark]: TraceAbstraction took 2575.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.0 MB in the end (delta: 144.4 MB). Peak memory consumption was 144.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:40,632 INFO L168 Benchmark]: Witness Printer took 59.91 ms. Allocated memory is still 1.2 GB. Free memory is still 958.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:40,641 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 292.51 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 54.20 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 147.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 812.42 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2575.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.0 MB in the end (delta: 144.4 MB). Peak memory consumption was 144.4 MB. Max. memory is 11.5 GB. * Witness Printer took 59.91 ms. Allocated memory is still 1.2 GB. Free memory is still 958.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; [L44] COND FALSE !(__fpclassify_float(x) == 0) [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y [L51] return x > y ? x : y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L55] __uint32_t w; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 2.5s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 214 SDtfs, 118 SDslu, 217 SDs, 0 SdLazy, 82 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 4287 SizeOfPredicates, 25 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...