/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-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/double_req_bl_1230_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7fc53c5de6b5608e137637bc5fb06d4e391070e8 ......................................................................................................................................................................................................................................................................................................................................................................................... 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/double_req_bl_1230_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7fc53c5de6b5608e137637bc5fb06d4e391070e8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:05:26,701 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:05:26,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:05:26,717 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:05:26,717 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:05:26,718 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:05:26,719 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:05:26,722 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:05:26,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:05:26,724 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:05:26,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:05:26,726 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:05:26,727 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:05:26,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:05:26,730 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:05:26,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:05:26,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:05:26,733 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:05:26,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:05:26,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:05:26,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:05:26,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:05:26,743 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:05:26,743 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:05:26,744 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:05:26,745 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:05:26,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:05:26,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:05:26,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:05:26,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:05:26,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:05:26,750 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:05:26,750 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:05:26,751 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:05:26,752 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:05:26,752 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:05:26,753 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:05:26,785 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:05:26,785 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:05:26,786 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:05:26,786 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:05:26,786 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:05:26,787 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:05:26,787 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:05:26,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:05:26,787 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:05:26,787 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:05:26,788 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:05:26,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:05:26,788 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:05:26,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:05:26,788 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:05:26,789 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:05:26,789 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:05:26,789 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:05:26,789 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:05:26,789 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:05:26,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:05:26,790 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:05:26,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:05:26,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:05:26,790 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:05:26,790 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:05:26,791 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:05:26,791 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:05:26,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:05:26,791 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 -> 7fc53c5de6b5608e137637bc5fb06d4e391070e8 [2018-09-20 15:05:26,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:05:26,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:05:26,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:05:26,867 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:05:26,868 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:05:26,869 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-20 15:05:27,245 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ce1a358/07110259e4124e0ea229b86fa1f4402e/FLAGfce771ad5 [2018-09-20 15:05:27,460 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:05:27,461 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-20 15:05:27,469 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ce1a358/07110259e4124e0ea229b86fa1f4402e/FLAGfce771ad5 [2018-09-20 15:05:27,485 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ce1a358/07110259e4124e0ea229b86fa1f4402e [2018-09-20 15:05:27,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:05:27,492 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:05:27,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:05:27,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:05:27,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:05:27,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cba804d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27, skipping insertion in model container [2018-09-20 15:05:27,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,517 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:05:27,808 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:05:27,830 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:05:27,848 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:05:27,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27 WrapperNode [2018-09-20 15:05:27,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:05:27,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:05:27,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:05:27,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:05:27,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (1/1) ... [2018-09-20 15:05:27,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:05:27,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:05:27,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:05:27,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:05:27,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (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 15:05:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:05:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:05:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-20 15:05:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:05:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-20 15:05:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:05:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:05:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:05:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-20 15:05:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:05:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:05:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:05:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:05:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:05:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-20 15:05:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:05:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:05:28,714 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:05:28,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:05:28 BoogieIcfgContainer [2018-09-20 15:05:28,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:05:28,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:05:28,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:05:28,720 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:05:28,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:05:27" (1/3) ... [2018-09-20 15:05:28,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6536ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:05:28, skipping insertion in model container [2018-09-20 15:05:28,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:27" (2/3) ... [2018-09-20 15:05:28,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6536ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:05:28, skipping insertion in model container [2018-09-20 15:05:28,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:05:28" (3/3) ... [2018-09-20 15:05:28,724 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-09-20 15:05:28,734 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:05:28,744 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:05:28,800 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:05:28,801 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:05:28,801 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:05:28,801 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:05:28,801 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:05:28,801 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:05:28,804 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:05:28,804 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:05:28,804 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:05:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-09-20 15:05:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-20 15:05:28,838 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:28,839 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:28,841 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1167146968, now seen corresponding path program 1 times [2018-09-20 15:05:28,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:05:28,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:05:28,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:28,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:28,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:29,024 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 15:05:29,027 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:29,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:05:29,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:05:29,045 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:05:29,046 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:05:29,048 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-09-20 15:05:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:29,076 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2018-09-20 15:05:29,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:05:29,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-20 15:05:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:29,093 INFO L225 Difference]: With dead ends: 95 [2018-09-20 15:05:29,094 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:05:29,099 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 15:05:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:05:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:05:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-20 15:05:29,144 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 26 [2018-09-20 15:05:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:29,145 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-20 15:05:29,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:05:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-20 15:05:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-20 15:05:29,148 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:29,148 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:29,149 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:29,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1918812708, now seen corresponding path program 1 times [2018-09-20 15:05:29,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:05:29,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:05:29,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:29,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:29,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:29,327 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 15:05:29,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:29,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:29,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:29,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:29,330 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:29,330 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-20 15:05:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:29,433 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2018-09-20 15:05:29,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:29,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-20 15:05:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:29,443 INFO L225 Difference]: With dead ends: 63 [2018-09-20 15:05:29,443 INFO L226 Difference]: Without dead ends: 52 [2018-09-20 15:05:29,444 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 15:05:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-20 15:05:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-20 15:05:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-20 15:05:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-20 15:05:29,457 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 39 [2018-09-20 15:05:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:29,458 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-20 15:05:29,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-20 15:05:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-20 15:05:29,460 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:29,460 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:29,460 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash 362062309, now seen corresponding path program 1 times [2018-09-20 15:05:29,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:05:29,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:05:29,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:29,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:29,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:29,625 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 15:05:29,625 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:29,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:29,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:29,626 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:29,626 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:29,627 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 4 states. [2018-09-20 15:05:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:29,734 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-09-20 15:05:29,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:29,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-20 15:05:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:29,737 INFO L225 Difference]: With dead ends: 67 [2018-09-20 15:05:29,737 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:05:29,738 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 15:05:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:05:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-09-20 15:05:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-20 15:05:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-20 15:05:29,751 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 42 [2018-09-20 15:05:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:29,752 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-20 15:05:29,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-20 15:05:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-20 15:05:29,754 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:29,754 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:29,754 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1869614118, now seen corresponding path program 1 times [2018-09-20 15:05:29,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:05:29,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:05:29,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:29,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:29,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:05:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:05:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:05:29,854 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:05:29,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:05:29 BoogieIcfgContainer [2018-09-20 15:05:29,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:05:29,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:05:29,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:05:29,893 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:05:29,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:05:28" (3/4) ... [2018-09-20 15:05:29,899 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:05:29,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:05:29,900 INFO L168 Benchmark]: Toolchain (without parser) took 2410.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 950.5 MB in the beginning and 1.0 GB in the end (delta: -57.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:29,902 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 15:05:29,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.69 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:29,903 INFO L168 Benchmark]: Boogie Preprocessor took 50.84 ms. Allocated memory is still 1.0 GB. Free memory is still 939.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:05:29,904 INFO L168 Benchmark]: RCFGBuilder took 789.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:29,905 INFO L168 Benchmark]: TraceAbstraction took 1175.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:29,906 INFO L168 Benchmark]: Witness Printer took 6.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:05:29,910 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 381.69 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.84 ms. Allocated memory is still 1.0 GB. Free memory is still 939.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 789.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1175.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967303] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L21] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967302, ew_u={4294967300:0}, x=4294967302] [L22] FCALL ew_u.value = (x) VAL [\old(x)=4294967302, ew_u={4294967300:0}, x=4294967302] [L23] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.msw=4293918721, x=4294967302] [L23] (msw) = ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L23] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L24] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967302] [L24] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L24] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967304, \old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L25] COND FALSE !(0) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L33-L34] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] RET return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L45] EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967302, y=4294967303] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] RET return y; VAL [\old(x)=4294967302, \old(y)=4294967303, \result=4294967303, x=4294967302, y=4294967303] [L63] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967303, x=4294967302, y=4294967303] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L16] RET return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L65] EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967302, y=4294967303] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4294967303, x=4294967302, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 170 SDtfs, 0 SDslu, 206 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=52occurred 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, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4382 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 15:05:32,216 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:05:32,219 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:05:32,232 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:05:32,232 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:05:32,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:05:32,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:05:32,237 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:05:32,239 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:05:32,240 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:05:32,241 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:05:32,241 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:05:32,242 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:05:32,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:05:32,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:05:32,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:05:32,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:05:32,249 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:05:32,251 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:05:32,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:05:32,254 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:05:32,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:05:32,258 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:05:32,258 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:05:32,259 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:05:32,260 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:05:32,261 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:05:32,262 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:05:32,263 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:05:32,264 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:05:32,264 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:05:32,265 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:05:32,266 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:05:32,266 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:05:32,267 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:05:32,268 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:05:32,268 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:05:32,290 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:05:32,290 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:05:32,291 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:05:32,291 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:05:32,292 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:05:32,293 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:05:32,293 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:05:32,293 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:05:32,293 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:05:32,293 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:05:32,294 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:05:32,294 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:05:32,294 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:05:32,294 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:05:32,295 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:05:32,296 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:05:32,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:05:32,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:05:32,296 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:05:32,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:05:32,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:05:32,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:05:32,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:05:32,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:05:32,298 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:05:32,299 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:05:32,299 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:05:32,299 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:05:32,300 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:05:32,300 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:05:32,300 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:05:32,300 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 -> 7fc53c5de6b5608e137637bc5fb06d4e391070e8 [2018-09-20 15:05:32,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:05:32,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:05:32,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:05:32,371 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:05:32,371 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:05:32,372 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-20 15:05:32,723 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa182afa/4a4c0aef496b442a8121a51acbd4e3a8/FLAG3616db9da [2018-09-20 15:05:32,953 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:05:32,954 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-20 15:05:32,962 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa182afa/4a4c0aef496b442a8121a51acbd4e3a8/FLAG3616db9da [2018-09-20 15:05:32,987 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa182afa/4a4c0aef496b442a8121a51acbd4e3a8 [2018-09-20 15:05:32,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:05:32,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:05:33,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:05:33,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:05:33,014 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:05:33,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:05:32" (1/1) ... [2018-09-20 15:05:33,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f92a36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33, skipping insertion in model container [2018-09-20 15:05:33,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:05:32" (1/1) ... [2018-09-20 15:05:33,032 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:05:33,269 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:05:33,292 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:05:33,319 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:05:33,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33 WrapperNode [2018-09-20 15:05:33,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:05:33,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:05:33,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:05:33,373 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:05:33,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (1/1) ... [2018-09-20 15:05:33,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:05:33,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:05:33,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:05:33,426 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:05:33,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (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 15:05:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:05:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:05:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-20 15:05:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:05:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-20 15:05:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:05:33,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:05:33,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:05:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-20 15:05:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:05:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:05:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-20 15:05:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:05:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:05:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-20 15:05:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:05:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:05:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:05:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:05:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:05:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-20 15:05:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-20 15:05:33,982 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:05:34,022 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:05:34,049 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:05:34,243 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:05:34,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:05:34 BoogieIcfgContainer [2018-09-20 15:05:34,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:05:34,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:05:34,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:05:34,253 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:05:34,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:05:32" (1/3) ... [2018-09-20 15:05:34,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d7c3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:05:34, skipping insertion in model container [2018-09-20 15:05:34,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:05:33" (2/3) ... [2018-09-20 15:05:34,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d7c3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:05:34, skipping insertion in model container [2018-09-20 15:05:34,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:05:34" (3/3) ... [2018-09-20 15:05:34,258 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-09-20 15:05:34,268 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:05:34,276 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:05:34,323 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:05:34,324 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:05:34,324 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:05:34,325 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:05:34,325 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:05:34,325 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:05:34,325 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:05:34,325 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:05:34,326 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:05:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-09-20 15:05:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-20 15:05:34,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:34,356 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:34,359 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 107662263, now seen corresponding path program 1 times [2018-09-20 15:05:34,371 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:34,371 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 15:05:34,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:34,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:34,499 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 15:05:34,499 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:34,514 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:34,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:05:34,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:05:34,533 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:05:34,533 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:05:34,536 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-09-20 15:05:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:34,565 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2018-09-20 15:05:34,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:05:34,567 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-20 15:05:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:34,577 INFO L225 Difference]: With dead ends: 89 [2018-09-20 15:05:34,578 INFO L226 Difference]: Without dead ends: 45 [2018-09-20 15:05:34,582 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:05:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-20 15:05:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-20 15:05:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:05:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-20 15:05:34,635 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-09-20 15:05:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:34,635 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-20 15:05:34,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:05:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-20 15:05:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-20 15:05:34,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:34,644 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:34,644 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:34,645 INFO L82 PathProgramCache]: Analyzing trace with hash 27912084, now seen corresponding path program 1 times [2018-09-20 15:05:34,646 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:34,646 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 15:05:34,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:34,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:34,847 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 15:05:34,847 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:34,861 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:34,861 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:34,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:34,864 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:34,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:34,866 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2018-09-20 15:05:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:34,986 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-20 15:05:34,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:34,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-09-20 15:05:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:34,993 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:05:34,993 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:05:34,994 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 15:05:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:05:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:05:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:05:35,007 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2018-09-20 15:05:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:35,008 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:05:35,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:05:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:05:35,011 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:35,011 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:35,012 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash -605167360, now seen corresponding path program 1 times [2018-09-20 15:05:35,013 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:35,013 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:05:35,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:05:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:35,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:35,242 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 15:05:35,242 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:35,256 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:35,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:35,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:35,257 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:35,257 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:35,258 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:05:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:35,334 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-20 15:05:35,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:35,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-20 15:05:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:35,336 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:05:35,337 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:05:35,337 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 15:05:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:05:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:05:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:05:35,346 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-20 15:05:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:35,347 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:05:35,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:05:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-20 15:05:35,349 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:35,349 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:35,349 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:35,350 INFO L82 PathProgramCache]: Analyzing trace with hash 70594328, now seen corresponding path program 1 times [2018-09-20 15:05:35,350 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:35,350 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 15:05:35,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:35,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:35,592 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 15:05:35,593 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:35,606 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:35,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:35,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:35,607 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:35,608 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:35,608 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:05:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:35,699 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-20 15:05:35,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:35,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-20 15:05:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:35,702 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:05:35,702 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:05:35,703 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:05:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:05:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:05:35,711 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2018-09-20 15:05:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:35,712 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:05:35,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:05:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-20 15:05:35,714 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:35,714 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:35,714 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:35,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1629241852, now seen corresponding path program 1 times [2018-09-20 15:05:35,715 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:35,715 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 15:05:35,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:35,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:35,849 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 15:05:35,850 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:35,864 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:35,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:35,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:35,865 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:35,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:35,866 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:05:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:35,966 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-20 15:05:35,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:35,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-20 15:05:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:35,968 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:05:35,968 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:05:35,969 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 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 15:05:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:05:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:05:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:05:35,977 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 40 [2018-09-20 15:05:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:35,977 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:05:35,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:05:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-20 15:05:35,980 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:35,980 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:35,980 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1922644859, now seen corresponding path program 1 times [2018-09-20 15:05:35,981 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:35,981 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 15:05:35,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:36,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:36,417 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 5 [2018-09-20 15:05:36,423 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 15:05:36,424 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:36,440 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:36,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:05:36,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:05:36,441 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:05:36,441 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:05:36,442 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2018-09-20 15:05:37,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:37,054 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-09-20 15:05:37,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:05:37,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-09-20 15:05:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:37,061 INFO L225 Difference]: With dead ends: 55 [2018-09-20 15:05:37,062 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:05:37,062 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:05:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:05:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-09-20 15:05:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:05:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-09-20 15:05:37,071 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 40 [2018-09-20 15:05:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:37,071 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-09-20 15:05:37,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:05:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-09-20 15:05:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-20 15:05:37,074 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:37,075 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:37,075 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1976004003, now seen corresponding path program 1 times [2018-09-20 15:05:37,076 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:37,076 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 15:05:37,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:37,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:05:37,223 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:37,238 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:37,238 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:37,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:37,239 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:37,239 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:37,241 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2018-09-20 15:05:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:37,300 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-09-20 15:05:37,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:37,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-09-20 15:05:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:37,302 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:05:37,302 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:05:37,303 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 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 15:05:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:05:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:05:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-20 15:05:37,310 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 57 [2018-09-20 15:05:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:37,311 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-20 15:05:37,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-20 15:05:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-20 15:05:37,313 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:37,314 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:05:37,315 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1553097201, now seen corresponding path program 1 times [2018-09-20 15:05:37,315 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:37,315 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 15:05:37,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:37,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:05:37,459 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:37,470 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:37,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:37,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:37,472 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:37,472 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:37,472 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-20 15:05:37,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:37,566 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2018-09-20 15:05:37,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:37,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-20 15:05:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:37,573 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:05:37,573 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:05:37,574 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 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 15:05:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:05:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:05:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-20 15:05:37,590 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 58 [2018-09-20 15:05:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:37,593 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-20 15:05:37,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-20 15:05:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-20 15:05:37,596 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:37,596 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:37,600 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:37,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2111546248, now seen corresponding path program 1 times [2018-09-20 15:05:37,601 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:37,602 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:05:37,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-20 15:05:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:37,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:05:38,046 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:38,057 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:38,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:05:38,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:05:38,058 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:05:38,058 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:05:38,058 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2018-09-20 15:05:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:38,335 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-09-20 15:05:38,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:05:38,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-09-20 15:05:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:38,338 INFO L225 Difference]: With dead ends: 59 [2018-09-20 15:05:38,338 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:05:38,339 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:05:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:05:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:05:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:05:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-20 15:05:38,345 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 59 [2018-09-20 15:05:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:38,346 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-20 15:05:38,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:05:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-20 15:05:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-20 15:05:38,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:38,349 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:05:38,349 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:38,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1410481670, now seen corresponding path program 1 times [2018-09-20 15:05:38,350 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:38,350 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-20 15:05:38,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:38,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:05:38,893 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:38,909 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:38,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:05:38,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:05:38,910 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:05:38,910 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:05:38,910 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 10 states. [2018-09-20 15:05:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:39,704 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-09-20 15:05:39,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-20 15:05:39,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-09-20 15:05:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:39,708 INFO L225 Difference]: With dead ends: 55 [2018-09-20 15:05:39,708 INFO L226 Difference]: Without dead ends: 45 [2018-09-20 15:05:39,711 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-20 15:05:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-20 15:05:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-20 15:05:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:05:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:05:39,723 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-20 15:05:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:39,723 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:05:39,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:05:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:05:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-20 15:05:39,728 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:39,728 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:05:39,733 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1887527199, now seen corresponding path program 1 times [2018-09-20 15:05:39,734 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:39,735 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-20 15:05:39,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:39,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:05:39,853 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:39,863 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:39,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:39,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:39,864 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:39,864 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:39,865 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-20 15:05:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:39,907 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-09-20 15:05:39,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:39,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-20 15:05:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:39,909 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:05:39,909 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:05:39,910 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 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 15:05:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:05:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-20 15:05:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:05:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:05:39,916 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-20 15:05:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:39,917 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:05:39,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:05:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-20 15:05:39,919 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:39,919 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:05:39,920 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1948654069, now seen corresponding path program 1 times [2018-09-20 15:05:39,921 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:39,921 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-20 15:05:39,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:40,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:05:40,046 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:40,056 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:40,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:05:40,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:05:40,057 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:05:40,057 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:05:40,058 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-20 15:05:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:40,108 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-09-20 15:05:40,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:05:40,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-20 15:05:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:40,110 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:05:40,110 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:05:40,111 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 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 15:05:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:05:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-20 15:05:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:05:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:05:40,117 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2018-09-20 15:05:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:40,118 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:05:40,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:05:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:05:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-20 15:05:40,120 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:05:40,120 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:05:40,120 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:05:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1655251062, now seen corresponding path program 1 times [2018-09-20 15:05:40,121 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:05:40,121 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-20 15:05:40,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:05:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:05:40,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:05:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:05:40,449 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:05:40,460 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:05:40,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:05:40,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:05:40,461 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:05:40,461 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:05:40,461 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 9 states. [2018-09-20 15:05:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:05:40,847 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-20 15:05:40,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:05:40,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-09-20 15:05:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:05:40,848 INFO L225 Difference]: With dead ends: 45 [2018-09-20 15:05:40,848 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:05:40,849 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:05:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:05:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:05:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:05:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:05:40,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-09-20 15:05:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:05:40,851 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:05:40,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:05:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:05:40,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:05:40,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:05:41,263 INFO L429 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-09-20 15:05:41,263 INFO L426 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-09-20 15:05:41,263 INFO L426 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-09-20 15:05:41,264 INFO L426 ceAbstractionStarter]: For program point L21-2(line 21) no Hoare annotation was computed. [2018-09-20 15:05:41,265 INFO L426 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2018-09-20 15:05:41,265 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-09-20 15:05:41,276 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point L24-2(line 24) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2018-09-20 15:05:41,277 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-09-20 15:05:41,280 INFO L429 ceAbstractionStarter]: At program point L20-3(lines 20 25) the Hoare annotation is: true [2018-09-20 15:05:41,280 INFO L426 ceAbstractionStarter]: For program point L20-4(lines 17 42) no Hoare annotation was computed. [2018-09-20 15:05:41,280 INFO L426 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-09-20 15:05:41,280 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:05:41,281 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:05:41,281 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:05:41,281 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:05:41,281 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:05:41,281 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:05:41,281 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:05:41,282 INFO L422 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 main_~y~0) (= .cse0 main_~res~0))) [2018-09-20 15:05:41,282 INFO L426 ceAbstractionStarter]: For program point L65-1(lines 65 68) no Hoare annotation was computed. [2018-09-20 15:05:41,282 INFO L422 ceAbstractionStarter]: At program point L63(line 63) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 main_~y~0) (= .cse0 main_~x~0))) [2018-09-20 15:05:41,282 INFO L426 ceAbstractionStarter]: For program point L63-1(line 63) no Hoare annotation was computed. [2018-09-20 15:05:41,282 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 53 71) the Hoare annotation is: true [2018-09-20 15:05:41,282 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 53 71) no Hoare annotation was computed. [2018-09-20 15:05:41,285 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2018-09-20 15:05:41,285 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 53 71) no Hoare annotation was computed. [2018-09-20 15:05:41,285 INFO L426 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-09-20 15:05:41,285 INFO L426 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-09-20 15:05:41,285 INFO L429 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-09-20 15:05:41,289 INFO L426 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-09-20 15:05:41,289 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-20 15:05:41,289 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-20 15:05:41,290 INFO L422 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-20 15:05:41,293 INFO L426 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-09-20 15:05:41,294 INFO L422 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-09-20 15:05:41,294 INFO L426 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-09-20 15:05:41,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:05:41 BoogieIcfgContainer [2018-09-20 15:05:41,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:05:41,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:05:41,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:05:41,303 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:05:41,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:05:34" (3/4) ... [2018-09-20 15:05:41,309 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:05:41,317 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-20 15:05:41,317 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:05:41,317 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-20 15:05:41,318 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-09-20 15:05:41,318 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:05:41,325 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-20 15:05:41,325 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-20 15:05:41,325 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:05:41,388 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:05:41,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:05:41,390 INFO L168 Benchmark]: Toolchain (without parser) took 8394.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 950.8 MB in the beginning and 1.2 GB in the end (delta: -216.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:05:41,391 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:05:41,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.54 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 939.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:41,392 INFO L168 Benchmark]: Boogie Preprocessor took 52.82 ms. Allocated memory is still 1.0 GB. Free memory was 939.9 MB in the beginning and 934.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:41,392 INFO L168 Benchmark]: RCFGBuilder took 818.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 934.5 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:41,393 INFO L168 Benchmark]: TraceAbstraction took 7055.31 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.1 MB). Peak memory consumption was 329.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:41,395 INFO L168 Benchmark]: Witness Printer took 85.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:05:41,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 370.54 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 939.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.82 ms. Allocated memory is still 1.0 GB. Free memory was 939.9 MB in the beginning and 934.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 818.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 934.5 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7055.31 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.1 MB). Peak memory consumption was 329.7 MB. Max. memory is 11.5 GB. * Witness Printer took 85.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. SAFE Result, 6.9s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 654 SDtfs, 31 SDslu, 1808 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 617 ConstructedInterpolants, 3 QuantifiedInterpolants, 46527 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...