/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7 ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e4dbe5a9ab518912f1108432d43f490ec977d7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:33:29,710 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:33:29,713 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:33:29,731 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:33:29,732 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:33:29,734 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:33:29,736 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:33:29,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:33:29,741 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:33:29,743 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:33:29,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:33:29,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:33:29,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:33:29,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:33:29,760 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:33:29,761 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:33:29,764 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:33:29,766 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:33:29,771 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:33:29,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:33:29,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:33:29,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:33:29,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:33:29,784 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:33:29,786 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:33:29,787 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:33:29,788 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:33:29,789 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:33:29,791 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:33:29,792 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:33:29,793 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:33:29,794 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:33:29,794 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:33:29,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:33:29,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:33:29,796 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:33:29,796 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:33:29,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:33:29,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:33:29,821 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:33:29,821 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:33:29,821 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:33:29,822 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:33:29,822 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:33:29,822 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:33:29,822 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:33:29,826 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:33:29,827 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:33:29,827 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:33:29,827 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:33:29,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:33:29,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:33:29,827 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:33:29,828 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:33:29,828 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:33:29,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:33:29,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:33:29,830 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:33:29,830 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:33:29,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:33:29,830 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:33:29,830 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:33:29,831 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:33:29,831 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:33:29,831 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:33:29,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:33:29,831 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-09-20 15:33:29,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:33:29,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:33:29,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:33:29,911 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:33:29,911 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:33:29,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-20 15:33:30,268 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf1ac9e3/6470ad35926c440599701453f4e31199/FLAGde23630df [2018-09-20 15:33:30,425 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:33:30,426 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-20 15:33:30,433 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf1ac9e3/6470ad35926c440599701453f4e31199/FLAGde23630df [2018-09-20 15:33:30,452 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf1ac9e3/6470ad35926c440599701453f4e31199 [2018-09-20 15:33:30,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:33:30,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:33:30,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:30,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:33:30,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:33:30,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682d7878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30, skipping insertion in model container [2018-09-20 15:33:30,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,487 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:33:30,740 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:30,759 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:33:30,782 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:30,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30 WrapperNode [2018-09-20 15:33:30,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:30,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:33:30,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:33:30,812 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:33:30,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (1/1) ... [2018-09-20 15:33:30,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:33:30,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:33:30,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:33:30,872 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:33:30,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (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 [2018-09-20 15:33:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:33:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:33:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:33:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-20 15:33:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:33:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:33:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:33:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:33:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:33:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:33:31,534 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:33:31,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:31 BoogieIcfgContainer [2018-09-20 15:33:31,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:33:31,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:33:31,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:33:31,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:33:31,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:33:30" (1/3) ... [2018-09-20 15:33:31,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daddf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:31, skipping insertion in model container [2018-09-20 15:33:31,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:30" (2/3) ... [2018-09-20 15:33:31,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daddf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:31, skipping insertion in model container [2018-09-20 15:33:31,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:31" (3/3) ... [2018-09-20 15:33:31,545 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-09-20 15:33:31,556 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:33:31,565 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:33:31,624 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:33:31,625 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:33:31,625 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:33:31,625 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:33:31,626 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:33:31,626 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:33:31,626 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:33:31,626 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:33:31,627 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:33:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-20 15:33:31,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-20 15:33:31,664 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:31,665 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] [2018-09-20 15:33:31,668 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:31,677 INFO L82 PathProgramCache]: Analyzing trace with hash -678868765, now seen corresponding path program 1 times [2018-09-20 15:33:31,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:31,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:31,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:31,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:31,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:31,843 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:31,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:33:31,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:33:31,864 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:33:31,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:33:31,867 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-20 15:33:31,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:31,897 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-09-20 15:33:31,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:33:31,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-20 15:33:31,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:31,909 INFO L225 Difference]: With dead ends: 111 [2018-09-20 15:33:31,910 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:33:31,914 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 [2018-09-20 15:33:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:33:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:33:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:33:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-20 15:33:31,970 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-20 15:33:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:31,971 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-20 15:33:31,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:33:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-20 15:33:31,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:33:31,974 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:31,974 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] [2018-09-20 15:33:31,974 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash -232558112, now seen corresponding path program 1 times [2018-09-20 15:33:31,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:31,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:31,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:31,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:31,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:32,131 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:32,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:32,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:32,134 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:32,134 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:32,134 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-20 15:33:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:32,206 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-09-20 15:33:32,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:32,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-20 15:33:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:32,211 INFO L225 Difference]: With dead ends: 83 [2018-09-20 15:33:32,211 INFO L226 Difference]: Without dead ends: 60 [2018-09-20 15:33:32,212 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 [2018-09-20 15:33:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-20 15:33:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-20 15:33:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:33:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-20 15:33:32,225 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-20 15:33:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:32,225 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-20 15:33:32,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-20 15:33:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:33:32,227 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:32,227 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] [2018-09-20 15:33:32,228 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:32,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1859597870, now seen corresponding path program 1 times [2018-09-20 15:33:32,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:32,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:32,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:32,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:32,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:32,352 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:32,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:32,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:32,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:32,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:32,355 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-20 15:33:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:32,550 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-09-20 15:33:32,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:32,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-20 15:33:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:32,554 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:33:32,554 INFO L226 Difference]: Without dead ends: 64 [2018-09-20 15:33:32,555 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 [2018-09-20 15:33:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-20 15:33:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-20 15:33:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:33:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-20 15:33:32,581 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-20 15:33:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:32,581 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-20 15:33:32,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-20 15:33:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:33:32,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:32,583 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] [2018-09-20 15:33:32,583 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:32,586 INFO L82 PathProgramCache]: Analyzing trace with hash 62646511, now seen corresponding path program 1 times [2018-09-20 15:33:32,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:32,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:32,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:32,667 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:33:32,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:33:32 BoogieIcfgContainer [2018-09-20 15:33:32,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:33:32,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:33:32,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:33:32,711 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:33:32,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:31" (3/4) ... [2018-09-20 15:33:32,716 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:33:32,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:33:32,718 INFO L168 Benchmark]: Toolchain (without parser) took 2260.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,721 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-20 15:33:32,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.11 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,724 INFO L168 Benchmark]: Boogie Preprocessor took 59.68 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,726 INFO L168 Benchmark]: RCFGBuilder took 663.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,727 INFO L168 Benchmark]: TraceAbstraction took 1173.08 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: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,729 INFO L168 Benchmark]: Witness Printer took 6.32 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. [2018-09-20 15:33:32,735 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 350.11 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.68 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 663.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1173.08 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: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. * Witness Printer took 6.32 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 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={4286578694:0}, x=0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={4286578694:0}, x=0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, x=0] [L26] (w) = gf_u.word VAL [\old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578692, \old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=0] [L27] COND FALSE !(0) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] RET return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] RET return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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 0.1.23-40ef509 [2018-09-20 15:33:35,236 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:33:35,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:33:35,255 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:33:35,256 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:33:35,257 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:33:35,258 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:33:35,260 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:33:35,262 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:33:35,263 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:33:35,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:33:35,265 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:33:35,266 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:33:35,267 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:33:35,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:33:35,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:33:35,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:33:35,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:33:35,275 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:33:35,277 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:33:35,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:33:35,280 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:33:35,283 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:33:35,283 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:33:35,283 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:33:35,285 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:33:35,286 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:33:35,287 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:33:35,288 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:33:35,290 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:33:35,290 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:33:35,292 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:33:35,292 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:33:35,292 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:33:35,293 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:33:35,295 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:33:35,295 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:33:35,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:33:35,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:33:35,318 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:33:35,322 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:33:35,322 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:33:35,323 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:33:35,323 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:33:35,323 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:33:35,323 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:33:35,323 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:33:35,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:33:35,324 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:33:35,324 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:33:35,324 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:33:35,324 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:33:35,327 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:33:35,327 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:33:35,327 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:33:35,328 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:33:35,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:33:35,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:33:35,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:33:35,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:33:35,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:33:35,329 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:33:35,329 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:33:35,329 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:33:35,329 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:33:35,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:33:35,334 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:33:35,334 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:33:35,334 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-09-20 15:33:35,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:33:35,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:33:35,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:33:35,429 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:33:35,429 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:33:35,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-20 15:33:35,783 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b43ad8bd/59f246f052bb419481aa01adfc902d38/FLAG0a2518979 [2018-09-20 15:33:35,956 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:33:35,957 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-09-20 15:33:35,966 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b43ad8bd/59f246f052bb419481aa01adfc902d38/FLAG0a2518979 [2018-09-20 15:33:35,983 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b43ad8bd/59f246f052bb419481aa01adfc902d38 [2018-09-20 15:33:35,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:33:35,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:33:35,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:35,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:33:36,001 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:33:36,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:35" (1/1) ... [2018-09-20 15:33:36,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2242d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36, skipping insertion in model container [2018-09-20 15:33:36,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:35" (1/1) ... [2018-09-20 15:33:36,021 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:33:36,253 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:36,277 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:33:36,301 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:36,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36 WrapperNode [2018-09-20 15:33:36,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:36,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:33:36,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:33:36,355 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:33:36,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... [2018-09-20 15:33:36,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:33:36,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:33:36,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:33:36,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:33:36,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:33:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:33:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:33:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:33:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-20 15:33:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:33:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:33:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:33:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:33:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:33:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:33:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:33:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:33:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:33:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-20 15:33:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:33:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:33:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:33:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:33:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:33:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:33:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:33:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:33:37,082 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:37,121 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:37,210 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:37,222 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:37,235 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:33:37,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:37 BoogieIcfgContainer [2018-09-20 15:33:37,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:33:37,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:33:37,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:33:37,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:33:37,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:33:35" (1/3) ... [2018-09-20 15:33:37,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe10b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:37, skipping insertion in model container [2018-09-20 15:33:37,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:36" (2/3) ... [2018-09-20 15:33:37,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe10b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:37, skipping insertion in model container [2018-09-20 15:33:37,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:37" (3/3) ... [2018-09-20 15:33:37,247 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-09-20 15:33:37,258 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:33:37,267 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:33:37,315 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:33:37,316 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:33:37,316 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:33:37,316 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:33:37,316 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:33:37,316 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:33:37,317 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:33:37,317 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:33:37,317 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:33:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-20 15:33:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-20 15:33:37,356 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:37,358 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] [2018-09-20 15:33:37,360 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:37,366 INFO L82 PathProgramCache]: Analyzing trace with hash 552591758, now seen corresponding path program 1 times [2018-09-20 15:33:37,371 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:37,372 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 [2018-09-20 15:33:37,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:37,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:37,477 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:37,489 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:37,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:33:37,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:33:37,505 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:33:37,506 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:33:37,508 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-20 15:33:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:37,540 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-09-20 15:33:37,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:33:37,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-20 15:33:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:37,552 INFO L225 Difference]: With dead ends: 107 [2018-09-20 15:33:37,552 INFO L226 Difference]: Without dead ends: 54 [2018-09-20 15:33:37,558 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 [2018-09-20 15:33:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-20 15:33:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-20 15:33:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-20 15:33:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-20 15:33:37,613 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-20 15:33:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:37,613 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-20 15:33:37,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:33:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-20 15:33:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-20 15:33:37,619 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:37,619 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] [2018-09-20 15:33:37,619 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash 876629051, now seen corresponding path program 1 times [2018-09-20 15:33:37,621 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:37,621 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 [2018-09-20 15:33:37,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:37,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:37,815 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:37,831 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:37,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:37,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:37,833 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:37,833 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:37,834 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-20 15:33:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:37,915 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-09-20 15:33:37,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:37,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-20 15:33:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:37,920 INFO L225 Difference]: With dead ends: 80 [2018-09-20 15:33:37,920 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:33:37,921 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 [2018-09-20 15:33:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:33:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:33:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:33:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-20 15:33:37,935 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-20 15:33:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:37,935 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-20 15:33:37,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-20 15:33:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:33:37,938 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:37,938 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] [2018-09-20 15:33:37,939 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:37,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2005374951, now seen corresponding path program 1 times [2018-09-20 15:33:37,940 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:37,941 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 [2018-09-20 15:33:37,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:38,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:38,210 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 [2018-09-20 15:33:38,229 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 [2018-09-20 15:33:38,229 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:38,253 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:38,278 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:38,278 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:33:38,336 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 [2018-09-20 15:33:38,357 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 [2018-09-20 15:33:38,358 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:38,362 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:38,383 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:38,384 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:33:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:38,657 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:38,670 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:38,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:33:38,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:33:38,671 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:33:38,671 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:33:38,672 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-20 15:33:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:40,253 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-09-20 15:33:40,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:33:40,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-20 15:33:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:40,258 INFO L225 Difference]: With dead ends: 84 [2018-09-20 15:33:40,258 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:33:40,259 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:33:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:33:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:33:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:33:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-20 15:33:40,270 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-20 15:33:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:40,270 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-20 15:33:40,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:33:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-20 15:33:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-20 15:33:40,273 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:40,273 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] [2018-09-20 15:33:40,274 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1989940013, now seen corresponding path program 1 times [2018-09-20 15:33:40,275 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:40,275 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 [2018-09-20 15:33:40,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:40,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:33:40,377 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:40,392 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:40,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:40,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:40,393 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:40,393 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:40,393 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-20 15:33:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:40,437 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-09-20 15:33:40,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:40,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-20 15:33:40,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:40,440 INFO L225 Difference]: With dead ends: 80 [2018-09-20 15:33:40,440 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:33:40,441 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 [2018-09-20 15:33:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:33:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:33:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:33:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-20 15:33:40,450 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-20 15:33:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:40,450 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-20 15:33:40,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-20 15:33:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-20 15:33:40,453 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:40,453 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] [2018-09-20 15:33:40,453 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1865076213, now seen corresponding path program 1 times [2018-09-20 15:33:40,454 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:40,455 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 [2018-09-20 15:33:40,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:40,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:40,586 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 [2018-09-20 15:33:40,590 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 [2018-09-20 15:33:40,591 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:40,596 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:40,612 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:40,613 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:33:40,636 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 [2018-09-20 15:33:40,646 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 [2018-09-20 15:33:40,647 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:40,673 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:40,679 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:40,679 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:33:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:33:40,828 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:40,841 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:40,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:33:40,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:33:40,842 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:33:40,842 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:33:40,842 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-20 15:33:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:42,039 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-09-20 15:33:42,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:33:42,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-20 15:33:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:42,041 INFO L225 Difference]: With dead ends: 82 [2018-09-20 15:33:42,042 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:33:42,042 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 [2018-09-20 15:33:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:33:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:33:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:33:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-20 15:33:42,051 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-20 15:33:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:42,051 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-20 15:33:42,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:33:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-20 15:33:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-20 15:33:42,054 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:42,054 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] [2018-09-20 15:33:42,054 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1338435274, now seen corresponding path program 1 times [2018-09-20 15:33:42,055 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:42,055 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 [2018-09-20 15:33:42,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:42,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:33:42,247 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:42,258 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:42,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:33:42,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:33:42,259 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:33:42,259 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:33:42,260 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2018-09-20 15:33:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:42,490 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-09-20 15:33:42,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-20 15:33:42,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-20 15:33:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:42,493 INFO L225 Difference]: With dead ends: 59 [2018-09-20 15:33:42,493 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:33:42,494 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 [2018-09-20 15:33:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:33:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:33:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:33:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-09-20 15:33:42,502 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2018-09-20 15:33:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:42,503 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-09-20 15:33:42,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:33:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-09-20 15:33:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-20 15:33:42,505 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:42,506 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] [2018-09-20 15:33:42,506 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash -529088648, now seen corresponding path program 1 times [2018-09-20 15:33:42,507 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:42,507 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 [2018-09-20 15:33:42,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:42,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:33:42,669 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:42,678 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:42,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:33:42,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:33:42,679 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:33:42,679 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:33:42,679 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2018-09-20 15:33:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:42,770 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-09-20 15:33:42,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:33:42,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-20 15:33:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:42,772 INFO L225 Difference]: With dead ends: 75 [2018-09-20 15:33:42,772 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:33:42,773 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:33:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:33:42,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:33:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:33:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-20 15:33:42,780 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-20 15:33:42,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:42,781 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-20 15:33:42,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:33:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-20 15:33:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-20 15:33:42,782 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:42,782 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] [2018-09-20 15:33:42,782 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1111146332, now seen corresponding path program 1 times [2018-09-20 15:33:42,784 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:42,784 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 [2018-09-20 15:33:42,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:43,023 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:33:43,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:33:43 BoogieIcfgContainer [2018-09-20 15:33:43,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:33:43,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:33:43,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:33:43,113 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:33:43,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:37" (3/4) ... [2018-09-20 15:33:43,117 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-20 15:33:43,216 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:33:43,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:33:43,218 INFO L168 Benchmark]: Toolchain (without parser) took 7228.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 953.2 MB in the beginning and 860.1 MB in the end (delta: 93.1 MB). Peak memory consumption was 259.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:43,220 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-09-20 15:33:43,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.26 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:43,221 INFO L168 Benchmark]: Boogie Preprocessor took 77.87 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:43,222 INFO L168 Benchmark]: RCFGBuilder took 803.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:43,223 INFO L168 Benchmark]: TraceAbstraction took 5874.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 867.1 MB in the end (delta: 266.2 MB). Peak memory consumption was 266.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:43,224 INFO L168 Benchmark]: Witness Printer took 104.45 ms. Allocated memory is still 1.2 GB. Free memory was 867.1 MB in the beginning and 860.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:43,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 360.26 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.87 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 803.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5874.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 867.1 MB in the end (delta: 266.2 MB). Peak memory consumption was 266.2 MB. Max. memory is 11.5 GB. * Witness Printer took 104.45 ms. Allocated memory is still 1.2 GB. Free memory was 867.1 MB in the beginning and 860.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, x=0.0] [L26] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, x=0.0] [L26] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L26] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] COND FALSE, EXPR !(x > y ? x : y) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] RET return x > y ? x : y; [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] COND TRUE, EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L59] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L60] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L60] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L60] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L61] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L63] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 5.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 382 SDtfs, 125 SDslu, 1266 SDs, 0 SdLazy, 433 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.7s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 28345 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...