/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_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_1252a_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 f441bd4a1f5705911b7315c074b39e665542818e --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_1252a_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 f441bd4a1f5705911b7315c074b39e665542818e --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 18:39:54,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:54,273 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:54,285 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:54,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:54,287 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:54,288 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:54,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:54,292 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:54,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:54,297 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:54,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:54,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:54,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:54,304 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:54,304 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:54,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:54,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:54,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:54,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:54,312 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:54,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:54,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:54,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:54,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:54,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:54,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:54,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:54,320 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:54,321 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:54,321 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:54,322 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:54,322 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:54,322 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:54,324 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:54,324 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:54,325 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:39:54,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:54,356 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:54,357 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:54,358 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:54,358 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:54,358 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:54,359 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:54,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:54,359 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:54,359 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:39:54,359 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:54,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:54,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:54,360 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:54,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:54,360 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:54,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:54,361 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:54,361 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:54,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:54,361 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:54,361 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:54,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:54,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:54,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:54,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:54,362 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:39:54,362 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:54,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:39:54,363 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 -> f441bd4a1f5705911b7315c074b39e665542818e 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 18:39:54,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:54,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:54,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:54,459 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:54,460 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:54,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-21 18:39:54,811 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d008cc9/dc147917cca54e2a8c9efe73035e4aec/FLAGb1cbd13fe [2018-09-21 18:39:54,940 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:54,941 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-21 18:39:54,949 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d008cc9/dc147917cca54e2a8c9efe73035e4aec/FLAGb1cbd13fe [2018-09-21 18:39:54,966 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d008cc9/dc147917cca54e2a8c9efe73035e4aec [2018-09-21 18:39:54,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:54,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:54,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:54,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:54,984 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:54,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:54" (1/1) ... [2018-09-21 18:39:54,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f5d07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:54, skipping insertion in model container [2018-09-21 18:39:54,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:54" (1/1) ... [2018-09-21 18:39:55,000 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:55,220 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:55,239 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:55,254 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:55,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55 WrapperNode [2018-09-21 18:39:55,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:55,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:55,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:55,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:55,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (1/1) ... [2018-09-21 18:39:55,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:55,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:55,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:55,349 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:55,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (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 18:39:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:55,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:39:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-21 18:39:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:39:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:39:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:39:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:39:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-21 18:39:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:39:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:39:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:39:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:39:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:39:55,981 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:39:55,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:55 BoogieIcfgContainer [2018-09-21 18:39:55,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:39:55,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:39:55,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:39:55,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:39:55,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:54" (1/3) ... [2018-09-21 18:39:55,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5cef4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:55, skipping insertion in model container [2018-09-21 18:39:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:55" (2/3) ... [2018-09-21 18:39:55,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5cef4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:39:55, skipping insertion in model container [2018-09-21 18:39:55,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:55" (3/3) ... [2018-09-21 18:39:55,990 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-09-21 18:39:56,000 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:39:56,009 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:39:56,054 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:39:56,055 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:39:56,056 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:39:56,056 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:39:56,056 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:39:56,056 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:39:56,056 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:39:56,056 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:39:56,056 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:39:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-21 18:39:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:39:56,085 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:56,086 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 18:39:56,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash -678868765, now seen corresponding path program 1 times [2018-09-21 18:39:56,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:56,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:56,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:56,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:56,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:56,262 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 18:39:56,265 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:56,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:39:56,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:39:56,286 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:39:56,286 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:39:56,289 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-21 18:39:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:56,320 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-09-21 18:39:56,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:39:56,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:39:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:56,334 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:39:56,335 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:39:56,337 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 18:39:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:39:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:39:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:39:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-21 18:39:56,385 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-21 18:39:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:56,386 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-21 18:39:56,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:39:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-21 18:39:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:39:56,391 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:56,391 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 18:39:56,392 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:56,392 INFO L82 PathProgramCache]: Analyzing trace with hash -232558112, now seen corresponding path program 1 times [2018-09-21 18:39:56,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:56,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:56,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:56,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:56,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:56,635 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 18:39:56,636 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:56,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:56,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:56,640 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:56,641 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:56,641 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-21 18:39:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:56,801 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-09-21 18:39:56,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:56,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-21 18:39:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:56,805 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:39:56,805 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:39:56,806 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 18:39:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:39:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:39:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:39:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:39:56,822 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-21 18:39:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:56,822 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:39:56,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:39:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:39:56,824 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:56,824 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 18:39:56,824 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1859597870, now seen corresponding path program 1 times [2018-09-21 18:39:56,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:56,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:56,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:56,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:56,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:56,984 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 18:39:56,984 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:56,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:39:56,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:39:56,985 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:39:56,985 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:56,986 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-21 18:39:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:57,183 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-21 18:39:57,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:39:57,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:39:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:57,190 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:39:57,192 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:39:57,193 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:39:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:39:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-21 18:39:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:39:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-21 18:39:57,209 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-21 18:39:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:57,209 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-21 18:39:57,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:39:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-21 18:39:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:39:57,212 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:57,212 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 18:39:57,212 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash 62646511, now seen corresponding path program 1 times [2018-09-21 18:39:57,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:39:57,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:39:57,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:57,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:57,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:39:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:39:57,293 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:39:57,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:39:57 BoogieIcfgContainer [2018-09-21 18:39:57,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:39:57,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:39:57,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:39:57,332 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:39:57,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:39:55" (3/4) ... [2018-09-21 18:39:57,339 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:39:57,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:39:57,340 INFO L168 Benchmark]: Toolchain (without parser) took 2367.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:57,343 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 18:39:57,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.37 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:57,346 INFO L168 Benchmark]: Boogie Preprocessor took 58.81 ms. Allocated memory is still 1.0 GB. Free memory was 938.4 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:57,349 INFO L168 Benchmark]: RCFGBuilder took 633.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:57,350 INFO L168 Benchmark]: TraceAbstraction took 1349.40 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: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:57,351 INFO L168 Benchmark]: Witness Printer took 6.96 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 18:39:57,358 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 311.37 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.81 ms. Allocated memory is still 1.0 GB. Free memory was 938.4 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 633.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1349.40 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: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.96 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; VAL [y=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L20] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L23] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=4286578691, gf_u={4286578694:0}, x=4286578691] [L24] FCALL gf_u.value = (x) VAL [\old(x)=4286578691, gf_u={4286578694:0}, x=4286578691] [L25] EXPR, FCALL gf_u.word VAL [\old(x)=4286578691, gf_u={4286578694:0}, gf_u.word=4286578689, x=4286578691] [L25] (w) = gf_u.word VAL [\old(x)=4286578691, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L25] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578692, \old(x)=4286578691, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L26] COND FALSE !(0) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L43] EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0, x=4286578691, y=0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578691, y=0] [L78] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578691, y=0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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 18:39:59,676 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:59,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:59,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:59,694 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:59,695 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:59,696 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:59,698 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:59,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:59,701 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:59,702 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:59,702 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:59,703 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:59,704 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:59,705 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:59,706 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:59,706 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:59,708 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:59,710 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:59,712 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:59,713 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:59,714 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:59,716 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:59,717 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:59,717 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:59,718 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:59,719 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:59,720 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:59,721 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:59,722 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:59,722 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:59,723 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:59,723 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:59,723 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:59,724 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:59,725 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:59,726 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:39:59,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:59,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:59,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:59,757 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:59,758 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:59,758 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:59,760 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:59,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:59,760 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:59,761 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:59,761 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:59,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:59,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:59,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:59,762 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:39:59,762 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:39:59,762 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:59,762 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:59,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:59,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:59,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:59,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:59,763 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:59,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:59,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:59,764 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:59,764 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:59,764 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:39:59,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:59,766 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:39:59,766 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:39:59,767 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 -> f441bd4a1f5705911b7315c074b39e665542818e 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 18:39:59,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:59,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:59,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:59,841 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:59,841 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:59,842 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-21 18:40:00,187 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703a44185/a75e8f43c2934836a2097ce75c0544b2/FLAG91f1bc3d0 [2018-09-21 18:40:00,375 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:40:00,376 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-21 18:40:00,387 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703a44185/a75e8f43c2934836a2097ce75c0544b2/FLAG91f1bc3d0 [2018-09-21 18:40:00,407 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703a44185/a75e8f43c2934836a2097ce75c0544b2 [2018-09-21 18:40:00,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:40:00,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:40:00,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:00,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:40:00,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:40:00,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c01ba73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00, skipping insertion in model container [2018-09-21 18:40:00,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,449 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:40:00,723 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:00,742 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:40:00,760 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:00,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00 WrapperNode [2018-09-21 18:40:00,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:00,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:40:00,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:40:00,810 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:40:00,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (1/1) ... [2018-09-21 18:40:00,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:40:00,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:40:00,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:40:00,884 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:40:00,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (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 18:40:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:40:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:40:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-21 18:40:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-21 18:40:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:40:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:40:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:40:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-21 18:40:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:40:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:40:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:40:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:40:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-21 18:40:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:40:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:40:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:40:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:40:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:40:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:40:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:40:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:40:01,602 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:01,638 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:01,729 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:01,746 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:01,756 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:40:01,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:01 BoogieIcfgContainer [2018-09-21 18:40:01,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:40:01,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:40:01,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:40:01,761 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:40:01,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:40:00" (1/3) ... [2018-09-21 18:40:01,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e956ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:01, skipping insertion in model container [2018-09-21 18:40:01,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:00" (2/3) ... [2018-09-21 18:40:01,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e956ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:01, skipping insertion in model container [2018-09-21 18:40:01,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:01" (3/3) ... [2018-09-21 18:40:01,765 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-09-21 18:40:01,774 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:40:01,782 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:40:01,824 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:40:01,825 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:40:01,825 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:40:01,825 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:40:01,825 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:40:01,826 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:40:01,826 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:40:01,826 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:40:01,826 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:40:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-21 18:40:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:40:01,854 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:01,856 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 18:40:01,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 552591758, now seen corresponding path program 1 times [2018-09-21 18:40:01,869 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:01,870 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:01,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:01,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:01,974 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:01,990 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:01,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:40:01,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:40:02,008 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:40:02,009 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:02,012 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-21 18:40:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,036 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-21 18:40:02,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:40:02,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:40:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,048 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:40:02,048 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:40:02,050 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 18:40:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:40:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-21 18:40:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-21 18:40:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-21 18:40:02,098 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-21 18:40:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,098 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-21 18:40:02,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:40:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-21 18:40:02,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:40:02,102 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,102 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 18:40:02,102 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,102 INFO L82 PathProgramCache]: Analyzing trace with hash 876629051, now seen corresponding path program 1 times [2018-09-21 18:40:02,103 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,103 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:02,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,269 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 18:40:02,270 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:02,282 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:02,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:02,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:02,284 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:02,284 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:02,284 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-21 18:40:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:02,333 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-21 18:40:02,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:02,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-21 18:40:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:02,339 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:40:02,339 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:40:02,342 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 18:40:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:40:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:40:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:40:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-21 18:40:02,361 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-21 18:40:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:02,362 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-21 18:40:02,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-21 18:40:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:40:02,366 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:02,366 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 18:40:02,366 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:02,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2005374951, now seen corresponding path program 1 times [2018-09-21 18:40:02,367 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:02,367 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:02,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:02,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:02,610 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 18:40:02,614 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 18:40:02,615 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,619 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,636 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 18:40:02,637 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:02,697 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 18:40:02,716 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 18:40:02,717 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,726 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:02,729 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 18:40:02,729 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:03,089 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 18:40:03,089 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:03,101 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:03,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:40:03,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:40:03,103 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:40:03,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:40:03,103 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-21 18:40:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,826 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2018-09-21 18:40:04,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:40:04,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-21 18:40:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,829 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:40:04,829 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:40:04,830 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 18:40:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:40:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:40:04,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:40:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-21 18:40:04,838 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-21 18:40:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:04,838 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-21 18:40:04,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:40:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-21 18:40:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:40:04,840 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:04,840 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 18:40:04,841 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1989940013, now seen corresponding path program 1 times [2018-09-21 18:40:04,842 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:04,842 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 18:40:04,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:04,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-21 18:40:04,940 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:04,953 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:04,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:40:04,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:40:04,954 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:40:04,954 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:40:04,955 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-21 18:40:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:04,994 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-09-21 18:40:04,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:40:04,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-21 18:40:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:04,997 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:40:04,997 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:40:04,998 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 18:40:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:40:05,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:40:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:40:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-21 18:40:05,006 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-21 18:40:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:05,007 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-21 18:40:05,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:40:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-21 18:40:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-21 18:40:05,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:05,009 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 18:40:05,010 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1865076213, now seen corresponding path program 1 times [2018-09-21 18:40:05,010 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:05,011 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 18:40:05,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:05,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:05,116 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 18:40:05,121 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 18:40:05,122 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,132 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,146 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 18:40:05,147 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:05,170 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 18:40:05,175 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 18:40:05,176 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,185 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:05,187 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 18:40:05,187 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:05,351 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 18:40:05,351 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:05,364 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:05,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:40:05,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:40:05,365 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:40:05,365 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:40:05,366 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-21 18:40:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:06,327 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2018-09-21 18:40:06,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:40:06,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-21 18:40:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:06,330 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:40:06,330 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:40:06,330 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:40:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:40:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:40:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:40:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-21 18:40:06,336 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-21 18:40:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:06,336 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-21 18:40:06,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:40:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-21 18:40:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:40:06,338 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:06,338 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 18:40:06,338 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:06,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1338435274, now seen corresponding path program 1 times [2018-09-21 18:40:06,339 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:06,339 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 18:40:06,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:06,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:06,512 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 18:40:06,513 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:06,522 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:06,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:40:06,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:40:06,523 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:40:06,523 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:40:06,524 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2018-09-21 18:40:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:06,895 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-09-21 18:40:06,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:40:06,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-21 18:40:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:06,897 INFO L225 Difference]: With dead ends: 56 [2018-09-21 18:40:06,898 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:40:06,898 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 18:40:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:40:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-21 18:40:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-21 18:40:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-09-21 18:40:06,904 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2018-09-21 18:40:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:06,904 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-09-21 18:40:06,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:40:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-09-21 18:40:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:40:06,906 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:06,906 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 18:40:06,906 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:06,907 INFO L82 PathProgramCache]: Analyzing trace with hash -529088648, now seen corresponding path program 1 times [2018-09-21 18:40:06,907 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:06,907 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 18:40:06,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:06,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:07,090 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 18:40:07,091 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:07,101 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:07,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:40:07,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:40:07,102 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:40:07,102 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:40:07,103 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2018-09-21 18:40:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:07,185 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-09-21 18:40:07,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:40:07,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-21 18:40:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:07,191 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:40:07,192 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:40:07,192 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 18:40:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:40:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:40:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:40:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-21 18:40:07,199 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-21 18:40:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:07,199 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-21 18:40:07,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:40:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-21 18:40:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-21 18:40:07,200 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:07,200 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 18:40:07,201 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:07,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1111146332, now seen corresponding path program 1 times [2018-09-21 18:40:07,201 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:07,201 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 18:40:07,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:07,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:07,561 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 18:40:07,565 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 18:40:07,566 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:07,569 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:07,580 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 18:40:07,581 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:07,617 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 18:40:07,621 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 18:40:07,622 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:07,624 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:07,627 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 18:40:07,627 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:07,812 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 18:40:07,812 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:07,823 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:07,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-21 18:40:07,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-21 18:40:07,825 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-21 18:40:07,825 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:40:07,825 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 15 states. [2018-09-21 18:40:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:08,848 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-21 18:40:08,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:40:08,849 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2018-09-21 18:40:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:08,849 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:40:08,850 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:40:08,850 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-09-21 18:40:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:40:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:40:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:40:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:40:08,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2018-09-21 18:40:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:08,851 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:40:08,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-21 18:40:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:40:08,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:40:08,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:40:08 BoogieIcfgContainer [2018-09-21 18:40:08,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:40:08,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:40:08,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:40:08,857 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:40:08,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:01" (3/4) ... [2018-09-21 18:40:08,863 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:40:08,870 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:40:08,870 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:40:08,871 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-09-21 18:40:08,871 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-09-21 18:40:08,871 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-21 18:40:08,876 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:40:08,877 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:40:08,877 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:40:08,944 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:40:08,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:40:08,946 INFO L168 Benchmark]: Toolchain (without parser) took 8532.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 953.2 MB in the beginning and 1.2 GB in the end (delta: -204.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:08,948 INFO L168 Benchmark]: CDTParser took 0.19 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 18:40:08,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.32 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 18:40:08,949 INFO L168 Benchmark]: Boogie Preprocessor took 70.90 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:08,950 INFO L168 Benchmark]: RCFGBuilder took 876.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:08,952 INFO L168 Benchmark]: TraceAbstraction took 7098.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -49.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:08,952 INFO L168 Benchmark]: Witness Printer took 87.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:08,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 390.32 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 70.90 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 876.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7098.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -49.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Witness Printer took 87.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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, 7.0s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 419 SDtfs, 143 SDslu, 1700 SDs, 0 SdLazy, 591 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.7s 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, 1.8s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 327 ConstructedInterpolants, 14 QuantifiedInterpolants, 44234 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...