/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................................................................................................. 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:39:52,268 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:52,272 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:52,283 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:52,284 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:52,285 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:52,286 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:52,288 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:52,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:52,291 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:52,292 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:52,292 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:52,293 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:52,294 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:52,295 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:52,296 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:52,297 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:52,299 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:52,301 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:52,303 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:52,304 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:52,308 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:52,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:52,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:52,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:52,318 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:52,321 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:52,322 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:52,323 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:52,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:52,328 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:52,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:52,329 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:52,329 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:52,331 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:52,333 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:52,333 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:39:52,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:52,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:52,366 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:52,366 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:52,367 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:52,367 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:52,367 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:52,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:52,369 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:52,369 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:39:52,369 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:52,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:52,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:52,370 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:52,370 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:52,370 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:52,370 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:52,372 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:52,372 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:52,372 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:52,372 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:52,372 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:52,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:52,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:52,373 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:52,373 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:52,374 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:39:52,374 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:52,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:39:52,374 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:39:52,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:52,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:52,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:52,468 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:52,468 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:52,469 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-21 18:39:52,820 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad6d8eb99/7ac43cb930d54e068fd07490a3e41cfc/FLAGf04ba991b [2018-09-21 18:39:52,959 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:52,960 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-21 18:39:52,967 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad6d8eb99/7ac43cb930d54e068fd07490a3e41cfc/FLAGf04ba991b [2018-09-21 18:39:52,983 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad6d8eb99/7ac43cb930d54e068fd07490a3e41cfc [2018-09-21 18:39:52,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:52,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:52,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:52,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:52,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:53,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:53,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24141980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53, skipping insertion in model container [2018-09-21 18:39:53,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:53,017 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:53,270 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:53,291 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:53,317 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:53,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53 WrapperNode [2018-09-21 18:39:53,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:53,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:53,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:53,351 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:53,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... [2018-09-21 18:39:53,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:53,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:53,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:53,409 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:53,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:53,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:53,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-21 18:39:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:39:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:39:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:39:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:39:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:39:54,041 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:54,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:54 BoogieIcfgContainer [2018-09-21 18:39:54,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:54,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:54,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:54,047 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:54,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:52" (1/3) ... [2018-09-21 18:39:54,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70506221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:54, skipping insertion in model container [2018-09-21 18:39:54,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:53" (2/3) ... [2018-09-21 18:39:54,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70506221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:54, skipping insertion in model container [2018-09-21 18:39:54,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:54" (3/3) ... [2018-09-21 18:39:54,051 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-09-21 18:39:54,061 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:54,071 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:54,114 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:54,115 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:54,115 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:54,115 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:54,115 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:54,115 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:54,116 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:54,116 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:54,116 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-09-21 18:39:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:39:54,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:54,146 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:54,149 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:54,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1072307066, now seen corresponding path program 1 times [2018-09-21 18:39:54,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:54,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:54,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:54,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:54,309 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:54,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:54,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:54,333 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:54,333 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:54,336 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-09-21 18:39:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:54,358 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-09-21 18:39:54,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:54,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-21 18:39:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:54,370 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:39:54,371 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:39:54,373 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:39:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:39:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:39:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-21 18:39:54,417 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2018-09-21 18:39:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:54,417 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-21 18:39:54,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-21 18:39:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:39:54,421 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:54,421 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:54,422 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1892459167, now seen corresponding path program 1 times [2018-09-21 18:39:54,422 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:54,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:54,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:54,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:54,688 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:54,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:54,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:54,693 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:54,694 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:54,694 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-21 18:39:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:54,858 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-09-21 18:39:54,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:54,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:39:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:54,866 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:39:54,868 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:39:54,869 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:39:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:39:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:39:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:39:54,883 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 35 [2018-09-21 18:39:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:54,884 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:39:54,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:39:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:39:54,886 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:54,886 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:54,887 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -211612987, now seen corresponding path program 1 times [2018-09-21 18:39:54,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:54,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:54,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:54,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:55,050 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:55,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:55,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:55,051 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:55,051 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:55,053 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:39:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:55,186 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-09-21 18:39:55,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:55,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:39:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:55,192 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:39:55,192 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:39:55,193 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:39:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-09-21 18:39:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:39:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:39:55,206 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-21 18:39:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:55,206 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:39:55,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:39:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:39:55,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:55,209 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:55,209 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:55,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1295938822, now seen corresponding path program 1 times [2018-09-21 18:39:55,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:55,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:55,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:55,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:55,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:55,301 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:39:55,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:39:55 BoogieIcfgContainer [2018-09-21 18:39:55,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:39:55,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:39:55,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:39:55,334 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:39:55,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:54" (3/4) ... [2018-09-21 18:39:55,339 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:39:55,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:39:55,340 INFO L168 Benchmark]: Toolchain (without parser) took 2353.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -123.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:55,343 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:55,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.00 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:55,344 INFO L168 Benchmark]: Boogie Preprocessor took 53.30 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:55,344 INFO L168 Benchmark]: RCFGBuilder took 633.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:55,346 INFO L168 Benchmark]: TraceAbstraction took 1289.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:55,346 INFO L168 Benchmark]: Witness Printer took 6.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:55,351 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 360.00 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.30 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 633.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1289.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=4286578690] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692] [L20] __uint32_t w; VAL [\old(x)=4286578692, x=4286578692] [L23] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=4286578692, gf_u={4286578695:0}, x=4286578692] [L24] FCALL gf_u.value = (x) VAL [\old(x)=4286578692, gf_u={4286578695:0}, x=4286578692] [L25] EXPR, FCALL gf_u.word VAL [\old(x)=4286578692, gf_u={4286578695:0}, gf_u.word=4286578689, x=4286578692] [L25] (w) = gf_u.word VAL [\old(x)=4286578692, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578692] [L25] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578693, \old(x)=4286578692, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578692] [L26] COND FALSE !(0) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692] [L43] EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=4286578690, __fpclassify_float(x)=0, x=4286578692, y=4286578690] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=4286578692, \old(y)=4286578690, \result=4286578690, x=4286578692, y=4286578690] [L62] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=4286578692, y=4286578690] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578690] [L54] RET return x != x; VAL [\old(x)=4286578690, \result=0, x=4286578690] [L64] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578690, x=4286578692, y=4286578690] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=4286578690, x=4286578692, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 0 SDslu, 190 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:39:57,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:57,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:57,875 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:57,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:57,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:57,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:57,880 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:57,882 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:57,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:57,884 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:57,884 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:57,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:57,886 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:57,887 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:57,888 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:57,889 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:57,891 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:57,894 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:57,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:57,897 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:57,898 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:57,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:57,901 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:57,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:57,904 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:57,905 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:57,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:57,908 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:57,910 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:57,910 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:57,911 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:57,911 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:57,911 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:57,915 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:57,916 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:57,916 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:39:57,942 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:57,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:57,943 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:57,943 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:57,944 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:57,945 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:57,945 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:57,945 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:57,945 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:57,945 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:57,946 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:57,946 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:57,946 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:57,946 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:57,947 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:39:57,948 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:39:57,948 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:57,948 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:57,948 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:57,949 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:57,949 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:57,949 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:57,950 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:57,950 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:57,950 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:57,950 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:57,950 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:57,951 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:39:57,951 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:57,951 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:39:57,951 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:39:57,951 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:39:58,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:58,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:58,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:58,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:58,022 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:58,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-21 18:39:58,379 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de4b225e/bbb6db6db1e14bde8532a529d289b172/FLAGc91823e56 [2018-09-21 18:39:58,551 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:58,551 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-21 18:39:58,560 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de4b225e/bbb6db6db1e14bde8532a529d289b172/FLAGc91823e56 [2018-09-21 18:39:58,575 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de4b225e/bbb6db6db1e14bde8532a529d289b172 [2018-09-21 18:39:58,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:58,584 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:58,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:58,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:58,595 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:58,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dff8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58, skipping insertion in model container [2018-09-21 18:39:58,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,612 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:58,816 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:58,841 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:58,865 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:58,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58 WrapperNode [2018-09-21 18:39:58,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:58,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:58,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:58,922 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:58,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... [2018-09-21 18:39:58,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:58,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:58,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:58,977 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:58,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:59,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-21 18:39:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:39:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:39:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:39:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-21 18:39:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:39:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:39:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:39:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:39:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:39:59,510 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:59,524 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:59,608 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:59,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:59 BoogieIcfgContainer [2018-09-21 18:39:59,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:59,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:59,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:59,615 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:59,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:58" (1/3) ... [2018-09-21 18:39:59,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae4add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:59, skipping insertion in model container [2018-09-21 18:39:59,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58" (2/3) ... [2018-09-21 18:39:59,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae4add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:59, skipping insertion in model container [2018-09-21 18:39:59,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:59" (3/3) ... [2018-09-21 18:39:59,620 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-09-21 18:39:59,631 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:59,640 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:59,683 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:59,684 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:59,684 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:59,684 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:59,684 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:59,684 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:59,685 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:59,685 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:59,685 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-09-21 18:39:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-21 18:39:59,713 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:59,714 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:59,717 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1463672781, now seen corresponding path program 1 times [2018-09-21 18:39:59,727 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:59,728 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:59,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:59,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:59,835 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:59,848 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:59,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:59,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:59,866 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:59,867 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:59,869 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-09-21 18:39:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:59,891 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-09-21 18:39:59,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:59,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-21 18:39:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:59,902 INFO L225 Difference]: With dead ends: 45 [2018-09-21 18:39:59,902 INFO L226 Difference]: Without dead ends: 41 [2018-09-21 18:39:59,904 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-21 18:39:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-21 18:39:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:39:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-21 18:39:59,949 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2018-09-21 18:39:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:59,950 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-21 18:39:59,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-21 18:39:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-21 18:39:59,953 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:59,953 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:59,954 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash 74720519, now seen corresponding path program 1 times [2018-09-21 18:39:59,955 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:59,955 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 [2018-09-21 18:39:59,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:00,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:00,101 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:00,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:00,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:00,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:00,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:00,120 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:00,121 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-09-21 18:40:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:00,242 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-09-21 18:40:00,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:00,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-09-21 18:40:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:00,247 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:40:00,247 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:40:00,248 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:40:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:40:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:40:00,259 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2018-09-21 18:40:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:00,260 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:40:00,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:40:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:40:00,263 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:00,263 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:00,263 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:00,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1160723660, now seen corresponding path program 1 times [2018-09-21 18:40:00,264 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:00,264 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:00,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:00,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:00,488 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:00,502 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:00,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:00,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:00,504 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:00,504 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:00,504 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-21 18:40:00,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:00,624 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-21 18:40:00,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:00,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:40:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:00,627 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:40:00,627 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:40:00,628 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:40:00,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:40:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:40:00,637 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 34 [2018-09-21 18:40:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:00,638 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:40:00,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:40:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:40:00,640 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:00,642 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:00,643 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:00,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1978399573, now seen corresponding path program 1 times [2018-09-21 18:40:00,644 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:00,647 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) [2018-09-21 18:40:00,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:00,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:00,775 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:00,792 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:00,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:00,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:00,793 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:00,793 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:00,793 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-21 18:40:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:00,917 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-21 18:40:00,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:00,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:40:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:00,920 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:40:00,920 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:40:00,923 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:40:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:40:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:40:00,942 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 35 [2018-09-21 18:40:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:00,943 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:40:00,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:40:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:40:00,947 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:00,947 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:00,947 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1564806168, now seen corresponding path program 1 times [2018-09-21 18:40:00,948 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:00,948 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:00,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:01,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:01,090 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:01,101 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:01,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:01,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:01,103 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:01,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:01,103 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-21 18:40:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:01,209 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-09-21 18:40:01,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:01,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-21 18:40:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:01,213 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:40:01,213 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:40:01,213 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:40:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:40:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-21 18:40:01,221 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 36 [2018-09-21 18:40:01,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:01,221 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-21 18:40:01,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-21 18:40:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:40:01,224 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:01,224 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:01,224 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:01,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1271403161, now seen corresponding path program 1 times [2018-09-21 18:40:01,225 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:01,226 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:01,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:01,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:01,534 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:01,547 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:01,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:40:01,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:40:01,548 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:40:01,548 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:40:01,551 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 9 states. [2018-09-21 18:40:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,272 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-09-21 18:40:02,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:40:02,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-21 18:40:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,276 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:40:02,276 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:40:02,280 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:40:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:40:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-09-21 18:40:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:40:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-09-21 18:40:02,286 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-09-21 18:40:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,287 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-09-21 18:40:02,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:40:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-09-21 18:40:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-21 18:40:02,289 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,290 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:02,290 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1601370173, now seen corresponding path program 1 times [2018-09-21 18:40:02,291 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,292 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:02,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:40:02,389 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:02,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:02,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:02,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:02,404 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:02,405 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:02,406 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-09-21 18:40:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,461 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-09-21 18:40:02,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:02,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-21 18:40:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,469 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:40:02,469 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:40:02,470 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:40:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:40:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-21 18:40:02,476 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 49 [2018-09-21 18:40:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,477 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-21 18:40:02,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-21 18:40:02,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:40:02,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,480 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:02,480 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1724773742, now seen corresponding path program 1 times [2018-09-21 18:40:02,482 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,482 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:02,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:40:02,610 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:02,621 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:02,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:02,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:02,622 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:02,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:02,622 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-21 18:40:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,662 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-09-21 18:40:02,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:02,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-21 18:40:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,664 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:40:02,665 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:40:02,665 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:40:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-21 18:40:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-21 18:40:02,672 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 50 [2018-09-21 18:40:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,673 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-21 18:40:02,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-21 18:40:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:40:02,675 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,675 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:02,676 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2128784030, now seen corresponding path program 1 times [2018-09-21 18:40:02,676 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,676 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:02,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:40:02,870 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:02,880 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:02,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:40:02,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:40:02,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:40:02,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:40:02,881 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2018-09-21 18:40:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:03,046 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-09-21 18:40:03,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:40:03,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-09-21 18:40:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:03,055 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:40:03,056 INFO L226 Difference]: Without dead ends: 44 [2018-09-21 18:40:03,056 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:40:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-21 18:40:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-21 18:40:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-21 18:40:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-09-21 18:40:03,062 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 51 [2018-09-21 18:40:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:03,062 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-09-21 18:40:03,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:40:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-09-21 18:40:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:40:03,065 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:03,065 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:03,066 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:03,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1465118688, now seen corresponding path program 1 times [2018-09-21 18:40:03,066 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:03,066 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:03,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:03,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:40:03,445 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:03,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:03,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:40:03,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:40:03,463 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:40:03,463 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:40:03,463 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2018-09-21 18:40:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:03,866 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-09-21 18:40:03,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:40:03,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-21 18:40:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:03,869 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:40:03,869 INFO L226 Difference]: Without dead ends: 41 [2018-09-21 18:40:03,870 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:40:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-21 18:40:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-21 18:40:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:40:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-21 18:40:03,875 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-21 18:40:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:03,876 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-21 18:40:03,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:40:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-21 18:40:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:40:03,877 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:03,877 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:03,878 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:03,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1866038183, now seen corresponding path program 1 times [2018-09-21 18:40:03,879 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:03,879 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:03,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:03,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:40:03,976 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:03,987 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:03,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:03,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:03,988 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:03,988 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:03,989 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-21 18:40:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,002 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-09-21 18:40:04,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:04,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-21 18:40:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,004 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:40:04,004 INFO L226 Difference]: Without dead ends: 43 [2018-09-21 18:40:04,004 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-21 18:40:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-21 18:40:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:40:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-21 18:40:04,008 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-21 18:40:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:04,009 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-21 18:40:04,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-21 18:40:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-21 18:40:04,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:04,010 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:04,010 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:04,010 INFO L82 PathProgramCache]: Analyzing trace with hash 338446134, now seen corresponding path program 1 times [2018-09-21 18:40:04,013 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:04,013 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:04,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:04,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:40:04,103 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:04,117 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:04,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:04,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:04,118 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:04,118 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:04,119 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-21 18:40:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,193 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-09-21 18:40:04,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:04,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-21 18:40:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,198 INFO L225 Difference]: With dead ends: 44 [2018-09-21 18:40:04,198 INFO L226 Difference]: Without dead ends: 43 [2018-09-21 18:40:04,199 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-21 18:40:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-21 18:40:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-21 18:40:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-21 18:40:04,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 52 [2018-09-21 18:40:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:04,210 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-21 18:40:04,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-21 18:40:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-21 18:40:04,217 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:04,218 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:04,218 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:04,218 INFO L82 PathProgramCache]: Analyzing trace with hash 45043127, now seen corresponding path program 1 times [2018-09-21 18:40:04,218 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:04,219 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:04,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:04,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-21 18:40:04,493 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:04,503 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:04,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:40:04,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:40:04,504 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:40:04,504 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:40:04,504 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-09-21 18:40:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,730 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-09-21 18:40:04,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:40:04,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-09-21 18:40:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,731 INFO L225 Difference]: With dead ends: 39 [2018-09-21 18:40:04,731 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:40:04,732 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:40:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:40:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:40:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:40:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:40:04,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-09-21 18:40:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:04,734 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:40:04,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:40:04,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:40:04,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:40:04,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:40:04 BoogieIcfgContainer [2018-09-21 18:40:04,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:40:04,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:40:04,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:40:04,741 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:40:04,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:59" (3/4) ... [2018-09-21 18:40:04,750 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:40:04,758 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:40:04,759 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:40:04,759 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:40:04,759 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-09-21 18:40:04,759 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-09-21 18:40:04,766 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-21 18:40:04,766 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-21 18:40:04,767 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:40:04,829 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:40:04,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:40:04,831 INFO L168 Benchmark]: Toolchain (without parser) took 6250.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 949.2 MB in the beginning and 823.3 MB in the end (delta: 125.9 MB). Peak memory consumption was 277.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:04,833 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:04,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.34 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:04,835 INFO L168 Benchmark]: Boogie Preprocessor took 57.43 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:04,836 INFO L168 Benchmark]: RCFGBuilder took 631.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:04,836 INFO L168 Benchmark]: TraceAbstraction took 5128.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 830.1 MB in the end (delta: 290.0 MB). Peak memory consumption was 290.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:04,838 INFO L168 Benchmark]: Witness Printer took 89.92 ms. Allocated memory is still 1.2 GB. Free memory was 830.1 MB in the beginning and 823.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:04,842 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.34 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.43 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 631.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5128.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 830.1 MB in the end (delta: 290.0 MB). Peak memory consumption was 290.0 MB. Max. memory is 11.5 GB. * Witness Printer took 89.92 ms. Allocated memory is still 1.2 GB. Free memory was 830.1 MB in the beginning and 823.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. SAFE Result, 5.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 602 SDtfs, 31 SDslu, 1644 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 541 ConstructedInterpolants, 3 QuantifiedInterpolants, 37399 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 98/98 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...