/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a_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_1232a_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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 --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_1232a_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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 --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 18:39:51,306 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:51,307 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:51,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:51,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:51,322 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:51,323 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:51,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:51,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:51,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:51,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:51,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:51,333 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:51,334 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:51,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:51,336 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:51,337 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:51,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:51,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:51,342 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:51,344 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:51,345 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:51,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:51,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:51,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:51,349 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:51,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:51,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:51,351 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:51,352 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:51,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:51,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:51,353 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:51,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:51,355 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:51,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:51,356 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:39:51,377 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:51,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:51,379 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:51,379 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:51,380 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:51,380 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:51,380 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:51,382 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:51,383 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:51,383 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:39:51,383 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:51,383 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:51,383 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:51,384 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:51,384 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:51,385 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:51,385 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:51,385 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:51,385 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:51,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:51,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:51,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:51,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:51,386 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:51,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:51,389 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:51,390 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:39:51,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:51,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:39:51,390 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 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 18:39:51,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:51,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:51,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:51,462 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:51,463 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:51,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-09-21 18:39:51,806 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bb4c224/52c9a88fdeaf4bd7b2069ff66c8230de/FLAGf6b40e7df [2018-09-21 18:39:51,962 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:51,962 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-09-21 18:39:51,970 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bb4c224/52c9a88fdeaf4bd7b2069ff66c8230de/FLAGf6b40e7df [2018-09-21 18:39:51,988 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bb4c224/52c9a88fdeaf4bd7b2069ff66c8230de [2018-09-21 18:39:51,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:51,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:51,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:51,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:52,005 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:52,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:51" (1/1) ... [2018-09-21 18:39:52,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223424f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52, skipping insertion in model container [2018-09-21 18:39:52,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:51" (1/1) ... [2018-09-21 18:39:52,021 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:52,230 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:52,248 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:52,264 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:52,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52 WrapperNode [2018-09-21 18:39:52,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:52,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:52,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:52,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:52,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (1/1) ... [2018-09-21 18:39:52,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:52,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:52,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:52,337 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:52,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (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 18:39:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-21 18:39:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:39:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:39:53,268 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:53,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:53 BoogieIcfgContainer [2018-09-21 18:39:53,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:53,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:53,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:53,275 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:53,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:51" (1/3) ... [2018-09-21 18:39:53,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513c2b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:53, skipping insertion in model container [2018-09-21 18:39:53,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:52" (2/3) ... [2018-09-21 18:39:53,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513c2b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:53, skipping insertion in model container [2018-09-21 18:39:53,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:53" (3/3) ... [2018-09-21 18:39:53,279 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-09-21 18:39:53,290 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:53,300 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:53,350 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:53,351 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:53,351 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:53,351 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:53,351 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:53,351 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:53,352 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:53,352 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:53,352 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-21 18:39:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:39:53,386 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:53,389 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] [2018-09-21 18:39:53,392 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash 969493283, now seen corresponding path program 1 times [2018-09-21 18:39:53,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:53,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:53,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:53,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:53,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:53,636 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 18:39:53,642 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:53,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:53,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:53,673 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:53,674 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:53,678 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-21 18:39:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:53,712 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-09-21 18:39:53,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:53,716 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:39:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:53,731 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:39:53,731 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:39:53,733 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 18:39:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:39:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:39:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:39:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-21 18:39:53,794 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-21 18:39:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:53,797 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-21 18:39:53,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-21 18:39:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:39:53,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:53,802 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] [2018-09-21 18:39:53,803 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash -228670553, now seen corresponding path program 1 times [2018-09-21 18:39:53,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:53,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:53,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:53,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:53,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:54,066 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 18:39:54,067 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:54,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:54,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:54,074 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:54,074 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:54,075 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-21 18:39:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:54,227 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-09-21 18:39:54,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:54,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-21 18:39:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:54,232 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:39:54,232 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:39:54,233 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 18:39:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:39:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:39:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:39:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:39:54,250 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-21 18:39:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:54,250 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:39:54,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:39:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:39:54,253 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:54,253 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 18:39:54,254 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash 738637230, now seen corresponding path program 1 times [2018-09-21 18:39:54,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:54,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:54,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:54,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:54,387 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 18:39:54,388 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:54,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:54,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:54,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:54,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:54,391 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-21 18:39:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:54,528 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-21 18:39:54,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:54,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:39:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:54,531 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:39:54,531 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:39:54,532 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 18:39:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:39:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-21 18:39:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:39:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:39:54,554 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-21 18:39:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:54,554 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:39:54,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:39:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:39:54,557 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:54,557 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 18:39:54,557 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1058314129, now seen corresponding path program 1 times [2018-09-21 18:39:54,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:54,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:54,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:54,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:54,677 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:39:54,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:39:54 BoogieIcfgContainer [2018-09-21 18:39:54,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:39:54,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:39:54,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:39:54,709 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:39:54,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:53" (3/4) ... [2018-09-21 18:39:54,714 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:39:54,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:39:54,715 INFO L168 Benchmark]: Toolchain (without parser) took 2721.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -122.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:54,717 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 18:39:54,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.55 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:54,718 INFO L168 Benchmark]: Boogie Preprocessor took 44.90 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:54,719 INFO L168 Benchmark]: RCFGBuilder took 932.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:54,720 INFO L168 Benchmark]: TraceAbstraction took 1437.68 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 18:39:54,721 INFO L168 Benchmark]: Witness Printer took 5.18 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 18:39:54,725 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 293.55 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.90 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 932.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1437.68 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 5.18 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=2139095043] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={2139095046:0}, x=0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={2139095046:0}, x=0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={2139095046:0}, gf_u.word=2139095041, x=0] [L18] (w) = gf_u.word VAL [\old(x)=0, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=0] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=2139095044, \old(x)=0, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=0] [L19] COND FALSE !(0) VAL [\old(x)=0, w=2139095041, x=0] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2139095041, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=0, \result=0, w=2139095041, x=0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=2139095043, __fpclassify_float(x)=0, x=0, y=2139095043] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=0, \old(y)=2139095043, \result=2139095043, x=0, y=2139095043] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095043, x=0, y=2139095043] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=2139095043, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=2139095043] [L69] COND FALSE, EXPR !(res == -0.0f && __signbit_float(res) == 1) VAL [res=2139095043, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=2139095043] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=2139095043, x=0, y=2139095043] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 18:39:57,102 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:57,104 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:57,116 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:57,116 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:57,117 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:57,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:57,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:57,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:57,124 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:57,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:57,125 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:57,126 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:57,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:57,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:57,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:57,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:57,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:57,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:57,137 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:57,138 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:57,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:57,143 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:57,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:57,144 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:57,145 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:57,146 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:57,147 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:57,148 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:57,149 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:57,150 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:57,150 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:57,151 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:57,151 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:57,152 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:57,153 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:57,153 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:39:57,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:57,180 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:57,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:57,181 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:57,182 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:57,182 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:57,183 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:57,183 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:57,183 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:57,183 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:57,184 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:57,184 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:57,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:57,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:57,185 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:39:57,185 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:39:57,185 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:57,186 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:57,186 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:57,186 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:57,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:57,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:57,188 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:57,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:57,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:57,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:57,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:57,189 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:39:57,189 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:57,189 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:39:57,189 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:39:57,189 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 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 18:39:57,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:57,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:57,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:57,293 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:57,293 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:57,294 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-09-21 18:39:57,638 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/533e365b6/fcd4a6de82604f3a900c685e6ffa8c56/FLAG49452f212 [2018-09-21 18:39:57,811 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:57,812 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-09-21 18:39:57,819 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/533e365b6/fcd4a6de82604f3a900c685e6ffa8c56/FLAG49452f212 [2018-09-21 18:39:57,834 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/533e365b6/fcd4a6de82604f3a900c685e6ffa8c56 [2018-09-21 18:39:57,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:57,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:57,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:57,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:57,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:57,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:57" (1/1) ... [2018-09-21 18:39:57,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8a7346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:57, skipping insertion in model container [2018-09-21 18:39:57,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:57" (1/1) ... [2018-09-21 18:39:57,867 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:58,080 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:58,100 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:58,116 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:58,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:58 WrapperNode [2018-09-21 18:39:58,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:58,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:58,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:58,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:58,165 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 18:39:58,165 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 18:39:58,178 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 18:39:58,179 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 18:39:58,187 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 18:39:58,193 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 18:39:58,196 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 18:39:58,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:58,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:58,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:58,207 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:58,208 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 18:39:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-21 18:39:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:39:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:39:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:39:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:39:58,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:39:58,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:39:58,753 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:58,785 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:58,899 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:58,937 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:39:58,949 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:58,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:58 BoogieIcfgContainer [2018-09-21 18:39:58,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:58,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:58,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:58,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:57" (1/3) ... [2018-09-21 18:39:58,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10961990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:58, skipping insertion in model container [2018-09-21 18:39:58,955 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 18:39:58,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10961990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:58, skipping insertion in model container [2018-09-21 18:39:58,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:58" (3/3) ... [2018-09-21 18:39:58,958 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-09-21 18:39:58,969 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:58,977 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:59,025 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:59,026 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:59,026 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:59,026 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:59,027 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:59,027 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:59,027 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:59,027 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:59,027 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-21 18:39:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:39:59,056 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:59,057 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] [2018-09-21 18:39:59,060 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash 430535463, now seen corresponding path program 1 times [2018-09-21 18:39:59,072 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:59,072 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) [2018-09-21 18:39:59,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:59,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:59,179 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 18:39:59,179 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:59,195 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:59,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:59,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:59,213 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:59,213 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:59,216 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-21 18:39:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:59,237 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-21 18:39:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:59,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:39:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:59,249 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:39:59,249 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:39:59,251 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 18:39:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:39:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:39:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:39:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-21 18:39:59,303 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-21 18:39:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:59,303 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-21 18:39:59,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-21 18:39:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:39:59,307 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:59,307 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] [2018-09-21 18:39:59,307 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:59,307 INFO L82 PathProgramCache]: Analyzing trace with hash 973147503, now seen corresponding path program 1 times [2018-09-21 18:39:59,308 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:59,308 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:39:59,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:59,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:59,473 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 18:39:59,473 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:59,488 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:59,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:59,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:59,491 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:59,491 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:59,492 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-21 18:39:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:59,561 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-21 18:39:59,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:59,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-21 18:39:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:59,567 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:39:59,567 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:39:59,568 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 18:39:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:39:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:39:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:39:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-21 18:39:59,581 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-21 18:39:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:59,581 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-21 18:39:59,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-21 18:39:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:39:59,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:59,584 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] [2018-09-21 18:39:59,585 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:59,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1744180640, now seen corresponding path program 1 times [2018-09-21 18:39:59,586 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:59,586 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) [2018-09-21 18:39:59,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:59,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:59,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:39:59,867 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:39:59,868 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:59,879 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:59,948 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:59,948 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:39:59,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:40:00,003 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:40:00,004 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:00,021 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:00,026 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:00,026 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:00,542 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 18:40:00,543 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:00,556 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:00,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:40:00,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:40:00,557 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:40:00,558 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:40:00,558 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-21 18:40:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,231 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2018-09-21 18:40:02,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:40:02,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-21 18:40:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,235 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:40:02,235 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:40:02,236 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:40:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:40:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:40:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:40:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-21 18:40:02,246 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-21 18:40:02,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,247 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-21 18:40:02,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:40:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-21 18:40:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:40:02,250 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,250 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] [2018-09-21 18:40:02,251 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1143554021, now seen corresponding path program 1 times [2018-09-21 18:40:02,252 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,252 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:02,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,370 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 18:40:02,370 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:02,385 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:02,385 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:02,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:02,386 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:02,386 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:02,386 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-21 18:40:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,427 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-09-21 18:40:02,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:02,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-21 18:40:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,429 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:40:02,430 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:40:02,430 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 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 18:40:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:40:02,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:40:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:40:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-21 18:40:02,439 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-21 18:40:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,440 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-21 18:40:02,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-21 18:40:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-21 18:40:02,442 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,443 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] [2018-09-21 18:40:02,443 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash -113422118, now seen corresponding path program 1 times [2018-09-21 18:40:02,444 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,444 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 18:40:02,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:40:02,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:40:02,562 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,568 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,579 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,580 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:02,611 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:40:02,619 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:40:02,619 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,628 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,631 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,631 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:40:02,861 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:02,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:02,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:40:02,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:40:02,877 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:40:02,878 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:40:02,878 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-21 18:40:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:03,882 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2018-09-21 18:40:03,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:40:03,883 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-21 18:40:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:03,886 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:40:03,886 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:40:03,888 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:40:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:40:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:40:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:40:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-21 18:40:03,899 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-21 18:40:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:03,900 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-21 18:40:03,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:40:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-21 18:40:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:40:03,902 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:03,902 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] [2018-09-21 18:40:03,904 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:03,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1826494496, now seen corresponding path program 1 times [2018-09-21 18:40:03,904 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:03,905 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 18:40:03,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:03,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:04,058 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 18:40:04,058 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:04,068 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:04,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:40:04,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:40:04,069 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:40:04,069 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:40:04,070 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2018-09-21 18:40:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,165 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-09-21 18:40:04,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:40:04,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-21 18:40:04,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,171 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:40:04,171 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:40:04,171 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 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 18:40:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:40:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:40:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:40:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-09-21 18:40:04,177 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-09-21 18:40:04,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:04,178 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-09-21 18:40:04,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:40:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-09-21 18:40:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:40:04,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:04,180 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] [2018-09-21 18:40:04,181 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:04,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1659126174, now seen corresponding path program 1 times [2018-09-21 18:40:04,181 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:04,182 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 18:40:04,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:04,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:04,352 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 18:40:04,352 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:04,362 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:04,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:40:04,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:40:04,363 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:40:04,363 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:40:04,364 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 8 states. [2018-09-21 18:40:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,754 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-21 18:40:04,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:40:04,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-21 18:40:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,758 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:40:04,758 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:40:04,758 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:40:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:40:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:40:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:40:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-21 18:40:04,764 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-21 18:40:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:04,765 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-21 18:40:04,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:40:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-21 18:40:04,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-21 18:40:04,767 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:04,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:04,768 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:04,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1902635068, now seen corresponding path program 1 times [2018-09-21 18:40:04,768 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:04,768 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 18:40:04,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:04,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:04,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:40:04,975 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:40:04,975 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:04,979 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:04,989 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:04,990 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:05,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:40:05,031 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:40:05,031 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,034 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,037 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,037 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:05,386 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 18:40:05,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:05,396 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:05,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-21 18:40:05,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-21 18:40:05,398 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-21 18:40:05,398 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:40:05,398 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 15 states. [2018-09-21 18:40:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:06,534 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-21 18:40:06,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:40:06,534 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2018-09-21 18:40:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:06,535 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:40:06,535 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:40:06,536 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-09-21 18:40:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:40:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:40:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:40:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:40:06,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2018-09-21 18:40:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:06,538 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:40:06,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-21 18:40:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:40:06,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:40:06,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:40:06 BoogieIcfgContainer [2018-09-21 18:40:06,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:40:06,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:40:06,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:40:06,545 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:40:06,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:58" (3/4) ... [2018-09-21 18:40:06,550 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:40:06,558 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:40:06,558 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-09-21 18:40:06,559 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:40:06,559 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-09-21 18:40:06,559 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-21 18:40:06,565 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:40:06,566 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:40:06,566 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:40:06,630 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:40:06,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:40:06,631 INFO L168 Benchmark]: Toolchain (without parser) took 8792.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 1.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:06,633 INFO L168 Benchmark]: CDTParser took 0.21 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 18:40:06,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.91 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:06,634 INFO L168 Benchmark]: Boogie Preprocessor took 53.10 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 934.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:06,635 INFO L168 Benchmark]: RCFGBuilder took 748.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:06,637 INFO L168 Benchmark]: TraceAbstraction took 7593.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -57.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:06,638 INFO L168 Benchmark]: Witness Printer took 84.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:06,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.91 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.10 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 934.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 748.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7593.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -57.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Witness Printer took 84.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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, 58 locations, 1 error locations. SAFE Result, 7.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 417 SDtfs, 140 SDslu, 1695 SDs, 0 SdLazy, 581 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 327 ConstructedInterpolants, 14 QuantifiedInterpolants, 44766 SizeOfPredicates, 33 NumberOfNonLiveVariables, 728 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 70/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...