./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e 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 /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_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 df3954142d6b55c98b13b60b9fbaf053d4d402ff ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_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 df3954142d6b55c98b13b60b9fbaf053d4d402ff ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:04:18,721 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:18,723 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:18,735 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:18,736 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:18,737 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:18,738 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:18,741 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:18,743 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:18,744 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:18,745 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:18,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:18,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:18,748 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:18,749 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:18,750 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:18,751 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:18,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:18,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:18,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:18,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:18,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:18,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:18,764 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:18,764 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:18,765 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:18,766 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:18,767 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:18,768 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:18,770 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:18,770 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:18,771 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:18,771 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:18,771 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:18,773 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:18,774 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:18,774 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:04:18,790 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:18,791 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:18,792 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:18,792 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:18,793 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:18,793 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:18,793 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:18,793 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:18,794 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:18,794 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:04:18,794 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:18,794 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:18,794 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:18,794 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:18,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:18,796 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:18,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:18,796 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:18,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:18,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:18,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:18,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:18,797 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:18,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:18,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:18,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:18,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:18,800 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:04:18,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:18,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:04:18,801 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 -> df3954142d6b55c98b13b60b9fbaf053d4d402ff [2018-11-28 18:04:18,838 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:18,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:18,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:18,857 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:18,858 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:18,859 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-28 18:04:18,927 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73396d9c8/0fcd33e8ef50435199652f364d865a35/FLAG93f413e36 [2018-11-28 18:04:19,421 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:19,422 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-28 18:04:19,431 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73396d9c8/0fcd33e8ef50435199652f364d865a35/FLAG93f413e36 [2018-11-28 18:04:19,896 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73396d9c8/0fcd33e8ef50435199652f364d865a35 [2018-11-28 18:04:19,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:19,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:19,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:19,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:19,911 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:19,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:19" (1/1) ... [2018-11-28 18:04:19,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de2ffc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:19, skipping insertion in model container [2018-11-28 18:04:19,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:19" (1/1) ... [2018-11-28 18:04:19,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:19,956 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:20,195 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:20,202 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:20,251 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:20,288 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:20,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20 WrapperNode [2018-11-28 18:04:20,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:20,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:20,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:20,291 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:20,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:20,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:20,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:20,329 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:20,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:20,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:20,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:20,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:20,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (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 [2018-11-28 18:04:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:04:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:04:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-28 18:04:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-28 18:04:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:04:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:04:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:04:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:04:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:04:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:04:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:04:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:04:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:04:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:04:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:04:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:04:21,364 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:04:21,365 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:04:21,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:21 BoogieIcfgContainer [2018-11-28 18:04:21,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:04:21,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:04:21,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:04:21,371 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:04:21,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:19" (1/3) ... [2018-11-28 18:04:21,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db7b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:21, skipping insertion in model container [2018-11-28 18:04:21,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (2/3) ... [2018-11-28 18:04:21,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db7b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:21, skipping insertion in model container [2018-11-28 18:04:21,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:21" (3/3) ... [2018-11-28 18:04:21,376 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251_true-unreach-call.c [2018-11-28 18:04:21,387 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:21,397 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-28 18:04:21,418 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-28 18:04:21,456 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:21,457 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:21,457 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:21,457 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:21,458 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:21,458 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:21,458 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:21,458 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:21,459 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-11-28 18:04:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:04:21,494 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:21,495 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:21,498 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:21,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2074573857, now seen corresponding path program 1 times [2018-11-28 18:04:21,508 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:21,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:21,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:21,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:21,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:21,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:21,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:21,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:21,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:21,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:21,748 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-11-28 18:04:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:21,790 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2018-11-28 18:04:21,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:21,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-11-28 18:04:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:21,807 INFO L225 Difference]: With dead ends: 109 [2018-11-28 18:04:21,808 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 18:04:21,814 INFO L631 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 [2018-11-28 18:04:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 18:04:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-28 18:04:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 18:04:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2018-11-28 18:04:21,882 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2018-11-28 18:04:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:21,884 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2018-11-28 18:04:21,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2018-11-28 18:04:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 18:04:21,887 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:21,887 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:21,887 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:21,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -479509601, now seen corresponding path program 1 times [2018-11-28 18:04:21,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:21,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:21,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:21,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:21,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:22,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,039 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2018-11-28 18:04:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,274 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2018-11-28 18:04:22,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:04:22,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-28 18:04:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,277 INFO L225 Difference]: With dead ends: 112 [2018-11-28 18:04:22,279 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 18:04:22,281 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:04:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 18:04:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2018-11-28 18:04:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-28 18:04:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2018-11-28 18:04:22,310 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 37 [2018-11-28 18:04:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,311 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2018-11-28 18:04:22,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2018-11-28 18:04:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 18:04:22,314 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,314 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,314 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1695952933, now seen corresponding path program 1 times [2018-11-28 18:04:22,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:22,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:22,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 18:04:22,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,488 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 4 states. [2018-11-28 18:04:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,562 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2018-11-28 18:04:22,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-28 18:04:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,566 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:22,566 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:22,567 INFO L631 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 [2018-11-28 18:04:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-11-28 18:04:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 18:04:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2018-11-28 18:04:22,578 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 42 [2018-11-28 18:04:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,579 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2018-11-28 18:04:22,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2018-11-28 18:04:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 18:04:22,581 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,581 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,582 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1516736276, now seen corresponding path program 1 times [2018-11-28 18:04:22,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:22,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:22,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 18:04:22,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,690 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 4 states. [2018-11-28 18:04:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,768 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2018-11-28 18:04:22,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-28 18:04:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,773 INFO L225 Difference]: With dead ends: 93 [2018-11-28 18:04:22,774 INFO L226 Difference]: Without dead ends: 71 [2018-11-28 18:04:22,774 INFO L631 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 [2018-11-28 18:04:22,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-28 18:04:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-11-28 18:04:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 18:04:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2018-11-28 18:04:22,800 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 45 [2018-11-28 18:04:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,800 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2018-11-28 18:04:22,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2018-11-28 18:04:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 18:04:22,803 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,805 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,805 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1006202099, now seen corresponding path program 1 times [2018-11-28 18:04:22,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:22,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:22,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 18:04:22,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:04:22,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:04:22,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:04:22,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:22,884 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 3 states. [2018-11-28 18:04:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,950 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2018-11-28 18:04:22,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:04:22,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-28 18:04:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,953 INFO L225 Difference]: With dead ends: 70 [2018-11-28 18:04:22,953 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:04:22,953 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:04:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-28 18:04:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-28 18:04:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2018-11-28 18:04:22,963 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 45 [2018-11-28 18:04:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,963 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2018-11-28 18:04:22,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:04:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2018-11-28 18:04:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 18:04:22,966 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,966 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,966 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1226294786, now seen corresponding path program 1 times [2018-11-28 18:04:22,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:22,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:22,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:22,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:04:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:04:23,086 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:04:23,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:23 BoogieIcfgContainer [2018-11-28 18:04:23,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:23,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:23,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:23,136 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:23,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:21" (3/4) ... [2018-11-28 18:04:23,141 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:04:23,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:23,141 INFO L168 Benchmark]: Toolchain (without parser) took 3240.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 948.7 MB in the beginning and 996.4 MB in the end (delta: -47.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,144 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:23,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.86 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,146 INFO L168 Benchmark]: Boogie Preprocessor took 150.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,147 INFO L168 Benchmark]: RCFGBuilder took 885.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,148 INFO L168 Benchmark]: TraceAbstraction took 1768.63 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: 82.7 MB). Peak memory consumption was 82.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,149 INFO L168 Benchmark]: Witness Printer took 5.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:23,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 385.86 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 150.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 885.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1768.63 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: 82.7 MB). Peak memory consumption was 82.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73. Possible FailurePath: [L64] float x = __VERIFIER_nondet_float(); [L65] float y = __VERIFIER_nondet_float(); [L67] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095044] [L55] return x != x; VAL [\old(x)=2139095044, \result=1, x=2139095044] [L67] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=2139095044, y=2139095043] [L67] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=2139095044, y=2139095043] [L67] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095043] [L55] return x != x; VAL [\old(x)=2139095043, \result=0, x=2139095043] [L67] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095044, y=2139095043] [L67] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095044, y=2139095043] [L67-L68] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095044, y=2139095043] [L67-L68] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095044, \old(y)=2139095043] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095044] [L21] __uint32_t w; VAL [\old(x)=2139095044, x=2139095044] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=2139095044, \result=0, w=2139095041, x=2139095044] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095044, \old(y)=2139095043, __fpclassify_float(x)=0, x=2139095044, y=2139095043] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=2139095044, \old(y)=2139095043, \result=2139095043, x=2139095044, y=2139095043] [L70] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095043, x=2139095044, y=2139095043] [L70] float res = fmax_float(x, y); [L73] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095044] [L55] return x != x; VAL [\old(x)=2139095044, \result=1, x=2139095044] [L73] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=2139095043, x=2139095044, y=2139095043] [L73] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=2139095043, x=2139095044, y=2139095043] [L73] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095043] [L55] return x != x; VAL [\old(x)=2139095043, \result=0, x=2139095043] [L73] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=2139095043, x=2139095044, y=2139095043] [L73] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=2139095043, x=2139095044, y=2139095043] [L73] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L74] __VERIFIER_error() VAL [res=2139095043, x=2139095044, y=2139095043] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 locations, 2 error locations. UNSAFE Result, 1.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 407 SDtfs, 16 SDslu, 523 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 8870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 33/33 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 0.1.24-91b1670 [2018-11-28 18:04:25,581 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:25,583 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:25,596 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:25,597 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:25,598 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:25,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:25,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:25,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:25,605 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:25,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:25,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:25,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:25,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:25,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:25,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:25,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:25,617 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:25,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:25,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:25,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:25,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:25,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:25,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:25,627 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:25,630 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:25,631 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:25,632 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:25,633 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:25,635 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:25,635 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:25,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:25,638 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:25,638 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:25,639 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:25,640 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:25,640 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:04:25,672 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:25,672 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:25,673 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:25,673 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:25,674 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:25,675 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:25,675 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:25,675 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:25,675 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:25,675 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:25,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:25,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:25,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:25,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:25,676 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:04:25,676 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:04:25,678 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:25,678 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:25,678 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:25,678 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:25,679 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:25,679 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:25,679 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:25,679 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:25,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:25,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:25,681 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:25,681 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:25,681 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:04:25,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:25,681 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:04:25,682 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:04:25,682 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 -> df3954142d6b55c98b13b60b9fbaf053d4d402ff [2018-11-28 18:04:25,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:25,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:25,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:25,755 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:25,756 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:25,758 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-28 18:04:25,823 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce83e8042/80ca1ecb525643a0a82a1f7f9597046f/FLAG0dfec1d63 [2018-11-28 18:04:26,251 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:26,252 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-28 18:04:26,260 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce83e8042/80ca1ecb525643a0a82a1f7f9597046f/FLAG0dfec1d63 [2018-11-28 18:04:26,641 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce83e8042/80ca1ecb525643a0a82a1f7f9597046f [2018-11-28 18:04:26,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:26,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:26,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:26,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:26,656 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:26,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:26" (1/1) ... [2018-11-28 18:04:26,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183dcd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:26, skipping insertion in model container [2018-11-28 18:04:26,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:26" (1/1) ... [2018-11-28 18:04:26,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:26,700 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:26,968 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:26,978 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:27,025 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:27,069 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:27,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27 WrapperNode [2018-11-28 18:04:27,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:27,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:27,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:27,071 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:27,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:27,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:27,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:27,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:27,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (1/1) ... [2018-11-28 18:04:27,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:27,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:27,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:27,249 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:27,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (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 [2018-11-28 18:04:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:04:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:04:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-28 18:04:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-28 18:04:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:04:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:04:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:04:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:04:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:04:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:04:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:04:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:04:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:04:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:04:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:04:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:04:27,894 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:04:27,954 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:04:27,955 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:04:27,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:27 BoogieIcfgContainer [2018-11-28 18:04:27,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:04:27,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:04:27,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:04:27,967 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:04:27,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:26" (1/3) ... [2018-11-28 18:04:27,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39169aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:27, skipping insertion in model container [2018-11-28 18:04:27,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:27" (2/3) ... [2018-11-28 18:04:27,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39169aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:27, skipping insertion in model container [2018-11-28 18:04:27,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:27" (3/3) ... [2018-11-28 18:04:27,971 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251_true-unreach-call.c [2018-11-28 18:04:27,982 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:27,989 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-28 18:04:28,008 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-28 18:04:28,042 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:28,043 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:28,043 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:28,044 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:28,044 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:28,044 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:28,044 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:28,045 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:28,045 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-11-28 18:04:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 18:04:28,073 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:28,074 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:28,076 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:28,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:28,082 INFO L82 PathProgramCache]: Analyzing trace with hash 127161266, now seen corresponding path program 1 times [2018-11-28 18:04:28,087 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:28,087 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 [2018-11-28 18:04:28,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:28,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:28,201 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:28,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:28,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:28,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:28,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:28,247 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-11-28 18:04:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:28,276 INFO L93 Difference]: Finished difference Result 105 states and 146 transitions. [2018-11-28 18:04:28,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:28,277 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-11-28 18:04:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:28,290 INFO L225 Difference]: With dead ends: 105 [2018-11-28 18:04:28,290 INFO L226 Difference]: Without dead ends: 59 [2018-11-28 18:04:28,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-28 18:04:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-28 18:04:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 18:04:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2018-11-28 18:04:28,347 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 35 [2018-11-28 18:04:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:28,349 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2018-11-28 18:04:28,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2018-11-28 18:04:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:04:28,353 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:28,353 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:28,353 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:28,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash -788283278, now seen corresponding path program 1 times [2018-11-28 18:04:28,354 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:28,355 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:28,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:28,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:28,600 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:28,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:28,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:28,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:28,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:28,624 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 4 states. [2018-11-28 18:04:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:28,894 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2018-11-28 18:04:28,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:04:28,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 18:04:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:28,898 INFO L225 Difference]: With dead ends: 108 [2018-11-28 18:04:28,898 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:04:28,900 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:04:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:04:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2018-11-28 18:04:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 18:04:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2018-11-28 18:04:28,914 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2018-11-28 18:04:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:28,915 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2018-11-28 18:04:28,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2018-11-28 18:04:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 18:04:28,917 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:28,918 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:28,918 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:28,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash -728340568, now seen corresponding path program 1 times [2018-11-28 18:04:28,920 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:28,920 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:28,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:29,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:29,049 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:29,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:29,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:29,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:29,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:29,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,067 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2018-11-28 18:04:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:29,136 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2018-11-28 18:04:29,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:29,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-28 18:04:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:29,140 INFO L225 Difference]: With dead ends: 86 [2018-11-28 18:04:29,141 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 18:04:29,141 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 18:04:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-11-28 18:04:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:29,154 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 41 [2018-11-28 18:04:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:29,155 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:29,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 18:04:29,158 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:29,158 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:29,158 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:29,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1290130751, now seen corresponding path program 1 times [2018-11-28 18:04:29,160 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:29,160 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 [2018-11-28 18:04:29,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:29,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:29,312 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:29,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:29,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:29,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:29,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,324 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-28 18:04:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:29,361 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-28 18:04:29,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:29,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-28 18:04:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:29,365 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:29,366 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:29,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-28 18:04:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:29,378 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 42 [2018-11-28 18:04:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:29,379 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:29,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:29,379 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-28 18:04:29,382 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:29,382 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:29,382 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:29,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:29,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1173472140, now seen corresponding path program 1 times [2018-11-28 18:04:29,384 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:29,384 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 [2018-11-28 18:04:29,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:29,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:29,486 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:29,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:29,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:29,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:29,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:29,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,506 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-28 18:04:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:29,557 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-28 18:04:29,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:29,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-28 18:04:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:29,563 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:29,563 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:29,564 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-28 18:04:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:29,583 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 43 [2018-11-28 18:04:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:29,587 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:29,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 18:04:29,589 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:29,589 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:29,589 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:29,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:29,592 INFO L82 PathProgramCache]: Analyzing trace with hash -707704861, now seen corresponding path program 1 times [2018-11-28 18:04:29,592 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:29,593 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 [2018-11-28 18:04:29,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:29,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:29,779 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:29,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:29,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:29,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,795 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-28 18:04:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:29,841 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-28 18:04:29,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:29,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-28 18:04:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:29,846 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:29,846 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:29,847 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-28 18:04:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:29,857 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 44 [2018-11-28 18:04:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:29,857 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:29,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 18:04:29,870 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:29,870 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:29,870 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:29,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash 799846948, now seen corresponding path program 1 times [2018-11-28 18:04:29,871 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:29,871 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) [2018-11-28 18:04:29,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:29,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 18:04:30,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:31,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:31,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-11-28 18:04:31,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:04:31,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:04:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:31,093 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 13 states. [2018-11-28 18:04:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:32,017 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2018-11-28 18:04:32,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:32,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-11-28 18:04:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:32,020 INFO L225 Difference]: With dead ends: 104 [2018-11-28 18:04:32,021 INFO L226 Difference]: Without dead ends: 90 [2018-11-28 18:04:32,021 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-28 18:04:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2018-11-28 18:04:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 18:04:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2018-11-28 18:04:32,035 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 44 [2018-11-28 18:04:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:32,035 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2018-11-28 18:04:32,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:04:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2018-11-28 18:04:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-28 18:04:32,037 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:32,037 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:32,038 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:32,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:32,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1279812067, now seen corresponding path program 1 times [2018-11-28 18:04:32,038 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:32,039 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 [2018-11-28 18:04:32,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:32,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:32,260 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:32,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:32,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:04:32,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:04:32,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:04:32,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:04:32,271 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand 8 states. [2018-11-28 18:04:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:32,810 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2018-11-28 18:04:32,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:32,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-28 18:04:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:32,814 INFO L225 Difference]: With dead ends: 133 [2018-11-28 18:04:32,814 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:32,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2018-11-28 18:04:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 18:04:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2018-11-28 18:04:32,826 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 46 [2018-11-28 18:04:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:32,827 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2018-11-28 18:04:32,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:04:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2018-11-28 18:04:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-28 18:04:32,828 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:32,829 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:32,829 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:32,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:32,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1644657967, now seen corresponding path program 1 times [2018-11-28 18:04:32,830 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:32,830 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:32,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:32,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:32,949 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:32,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:32,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:04:32,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:04:32,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:04:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:32,961 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand 3 states. [2018-11-28 18:04:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:32,981 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2018-11-28 18:04:32,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:04:32,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-11-28 18:04:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:32,984 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:04:32,984 INFO L226 Difference]: Without dead ends: 77 [2018-11-28 18:04:32,985 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-28 18:04:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-11-28 18:04:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-28 18:04:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2018-11-28 18:04:32,997 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 51 [2018-11-28 18:04:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:32,997 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2018-11-28 18:04:32,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:04:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2018-11-28 18:04:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:32,998 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:32,999 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:32,999 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:32,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:32,999 INFO L82 PathProgramCache]: Analyzing trace with hash 893668260, now seen corresponding path program 1 times [2018-11-28 18:04:33,000 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:33,000 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) [2018-11-28 18:04:33,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:33,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:33,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:33,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:33,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-28 18:04:33,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:33,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:33,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:33,587 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand 12 states. [2018-11-28 18:04:34,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:34,383 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2018-11-28 18:04:34,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:34,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-11-28 18:04:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:34,385 INFO L225 Difference]: With dead ends: 102 [2018-11-28 18:04:34,388 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 18:04:34,389 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-28 18:04:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 18:04:34,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2018-11-28 18:04:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-28 18:04:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2018-11-28 18:04:34,401 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 56 [2018-11-28 18:04:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:34,401 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2018-11-28 18:04:34,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2018-11-28 18:04:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 18:04:34,404 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:34,404 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:34,406 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:34,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1433909297, now seen corresponding path program 1 times [2018-11-28 18:04:34,406 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:34,407 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 [2018-11-28 18:04:34,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:34,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:34,666 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 18:04:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 18:04:34,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 18:04:35,402 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:35,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-28 18:04:35,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 18:04:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 18:04:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-28 18:04:35,404 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand 19 states. [2018-11-28 18:04:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:36,899 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2018-11-28 18:04:36,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 18:04:36,900 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2018-11-28 18:04:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:36,902 INFO L225 Difference]: With dead ends: 116 [2018-11-28 18:04:36,902 INFO L226 Difference]: Without dead ends: 114 [2018-11-28 18:04:36,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-11-28 18:04:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-28 18:04:36,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2018-11-28 18:04:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 18:04:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2018-11-28 18:04:36,915 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 49 [2018-11-28 18:04:36,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:36,915 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2018-11-28 18:04:36,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 18:04:36,915 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2018-11-28 18:04:36,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:36,917 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:36,917 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:36,917 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:36,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:36,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1435611684, now seen corresponding path program 1 times [2018-11-28 18:04:36,918 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:36,918 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 [2018-11-28 18:04:36,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:36,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 18:04:37,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:37,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:37,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2018-11-28 18:04:37,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 18:04:37,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 18:04:37,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-11-28 18:04:37,442 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand 14 states. [2018-11-28 18:04:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:38,300 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2018-11-28 18:04:38,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 18:04:38,301 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2018-11-28 18:04:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:38,303 INFO L225 Difference]: With dead ends: 142 [2018-11-28 18:04:38,303 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:38,305 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-11-28 18:04:38,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2018-11-28 18:04:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 18:04:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2018-11-28 18:04:38,315 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 56 [2018-11-28 18:04:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:38,316 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2018-11-28 18:04:38,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 18:04:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2018-11-28 18:04:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-28 18:04:38,317 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:38,317 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:38,317 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:38,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:38,318 INFO L82 PathProgramCache]: Analyzing trace with hash 374913712, now seen corresponding path program 1 times [2018-11-28 18:04:38,318 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:38,318 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 [2018-11-28 18:04:38,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:38,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:38,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:38,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:38,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-28 18:04:38,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:38,861 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 12 states. [2018-11-28 18:04:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:39,438 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2018-11-28 18:04:39,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:39,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2018-11-28 18:04:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:39,441 INFO L225 Difference]: With dead ends: 92 [2018-11-28 18:04:39,441 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:39,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-28 18:04:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-11-28 18:04:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-28 18:04:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2018-11-28 18:04:39,451 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 58 [2018-11-28 18:04:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:39,452 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2018-11-28 18:04:39,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2018-11-28 18:04:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-28 18:04:39,455 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:39,455 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:39,455 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:39,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:39,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1917965495, now seen corresponding path program 1 times [2018-11-28 18:04:39,457 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:39,457 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:39,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:39,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:39,541 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:39,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:39,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:39,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:39,553 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand 4 states. [2018-11-28 18:04:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:39,590 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2018-11-28 18:04:39,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:39,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-28 18:04:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:39,593 INFO L225 Difference]: With dead ends: 116 [2018-11-28 18:04:39,593 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 18:04:39,595 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 18:04:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-11-28 18:04:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-28 18:04:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2018-11-28 18:04:39,604 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 54 [2018-11-28 18:04:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:39,604 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2018-11-28 18:04:39,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-11-28 18:04:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-28 18:04:39,607 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:39,607 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:39,607 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:39,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:39,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1403627392, now seen corresponding path program 1 times [2018-11-28 18:04:39,609 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:39,609 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:39,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:39,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:39,743 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:39,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:39,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:39,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:39,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:39,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:39,755 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 4 states. [2018-11-28 18:04:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:39,792 INFO L93 Difference]: Finished difference Result 119 states and 151 transitions. [2018-11-28 18:04:39,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:39,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-28 18:04:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:39,795 INFO L225 Difference]: With dead ends: 119 [2018-11-28 18:04:39,795 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:39,796 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:39,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-11-28 18:04:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-28 18:04:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2018-11-28 18:04:39,810 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 55 [2018-11-28 18:04:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:39,810 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2018-11-28 18:04:39,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-11-28 18:04:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:39,813 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:39,813 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:39,814 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:39,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:39,815 INFO L82 PathProgramCache]: Analyzing trace with hash -235124114, now seen corresponding path program 1 times [2018-11-28 18:04:39,815 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:39,815 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:39,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:39,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:40,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:40,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:04:40,341 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:04:40,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:40,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:40,441 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:40,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:40,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 18:04:40,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:04:40,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:04:40,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:40,676 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 8 states. [2018-11-28 18:04:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:41,671 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2018-11-28 18:04:41,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:41,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-11-28 18:04:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:41,673 INFO L225 Difference]: With dead ends: 114 [2018-11-28 18:04:41,673 INFO L226 Difference]: Without dead ends: 94 [2018-11-28 18:04:41,674 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-28 18:04:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2018-11-28 18:04:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-28 18:04:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2018-11-28 18:04:41,686 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 56 [2018-11-28 18:04:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:41,686 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2018-11-28 18:04:41,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:04:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2018-11-28 18:04:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:41,687 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:41,687 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:41,688 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:41,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2065698476, now seen corresponding path program 1 times [2018-11-28 18:04:41,688 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:41,688 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:41,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:41,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-28 18:04:42,067 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:42,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:42,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-28 18:04:42,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 18:04:42,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 18:04:42,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:04:42,079 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand 11 states. [2018-11-28 18:04:43,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:43,090 INFO L93 Difference]: Finished difference Result 124 states and 157 transitions. [2018-11-28 18:04:43,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:43,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-11-28 18:04:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:43,093 INFO L225 Difference]: With dead ends: 124 [2018-11-28 18:04:43,093 INFO L226 Difference]: Without dead ends: 122 [2018-11-28 18:04:43,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:04:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-11-28 18:04:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 94. [2018-11-28 18:04:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 18:04:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2018-11-28 18:04:43,110 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 56 [2018-11-28 18:04:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:43,110 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2018-11-28 18:04:43,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 18:04:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-28 18:04:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:43,115 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:43,115 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:43,115 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:43,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:43,115 INFO L82 PathProgramCache]: Analyzing trace with hash -341505115, now seen corresponding path program 1 times [2018-11-28 18:04:43,117 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:43,117 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:43,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:43,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:43,242 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:43,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:43,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:43,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:43,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:43,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:43,253 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 4 states. [2018-11-28 18:04:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:43,282 INFO L93 Difference]: Finished difference Result 127 states and 161 transitions. [2018-11-28 18:04:43,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:43,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-28 18:04:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:43,284 INFO L225 Difference]: With dead ends: 127 [2018-11-28 18:04:43,284 INFO L226 Difference]: Without dead ends: 97 [2018-11-28 18:04:43,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-28 18:04:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2018-11-28 18:04:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 18:04:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2018-11-28 18:04:43,295 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 56 [2018-11-28 18:04:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:43,296 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2018-11-28 18:04:43,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-28 18:04:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-28 18:04:43,299 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:43,299 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:43,299 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:43,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1176443467, now seen corresponding path program 1 times [2018-11-28 18:04:43,301 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:43,301 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:43,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:43,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:43,764 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-11-28 18:04:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-28 18:04:44,005 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:44,421 WARN L180 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:44,734 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-11-28 18:04:45,334 WARN L180 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:45,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:04:45,788 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:04:45,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:45,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 18:04:46,131 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:46,462 WARN L180 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:46,637 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:46,847 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-11-28 18:04:47,423 WARN L180 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:47,684 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:47,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:47,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 17 [2018-11-28 18:04:47,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 18:04:47,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 18:04:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:47,838 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 17 states. [2018-11-28 18:04:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:50,532 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2018-11-28 18:04:50,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 18:04:50,537 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2018-11-28 18:04:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:50,538 INFO L225 Difference]: With dead ends: 132 [2018-11-28 18:04:50,538 INFO L226 Difference]: Without dead ends: 113 [2018-11-28 18:04:50,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 156 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2018-11-28 18:04:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-28 18:04:50,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2018-11-28 18:04:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-28 18:04:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2018-11-28 18:04:50,551 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 63 [2018-11-28 18:04:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:50,551 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2018-11-28 18:04:50,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 18:04:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2018-11-28 18:04:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:50,555 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:50,555 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:50,555 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:50,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:50,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1421130064, now seen corresponding path program 1 times [2018-11-28 18:04:50,556 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:50,556 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:50,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:50,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:50,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:51,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:51,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-11-28 18:04:51,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:04:51,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:04:51,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:51,039 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand 13 states. [2018-11-28 18:04:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:51,613 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2018-11-28 18:04:51,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:51,614 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2018-11-28 18:04:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:51,616 INFO L225 Difference]: With dead ends: 116 [2018-11-28 18:04:51,616 INFO L226 Difference]: Without dead ends: 92 [2018-11-28 18:04:51,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-28 18:04:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2018-11-28 18:04:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-28 18:04:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2018-11-28 18:04:51,627 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 56 [2018-11-28 18:04:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:51,627 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2018-11-28 18:04:51,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:04:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2018-11-28 18:04:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 18:04:51,631 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:51,631 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:51,631 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:51,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:51,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1339205341, now seen corresponding path program 1 times [2018-11-28 18:04:51,632 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:51,632 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:51,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:51,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:51,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:52,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:52,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-11-28 18:04:52,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 18:04:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 18:04:52,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2018-11-28 18:04:52,610 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand 21 states. [2018-11-28 18:04:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:53,772 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2018-11-28 18:04:53,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 18:04:53,773 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2018-11-28 18:04:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:53,774 INFO L225 Difference]: With dead ends: 105 [2018-11-28 18:04:53,775 INFO L226 Difference]: Without dead ends: 91 [2018-11-28 18:04:53,777 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2018-11-28 18:04:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-28 18:04:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-11-28 18:04:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-28 18:04:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2018-11-28 18:04:53,786 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 57 [2018-11-28 18:04:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:53,786 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2018-11-28 18:04:53,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 18:04:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2018-11-28 18:04:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 18:04:53,789 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:53,789 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:53,789 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:53,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:53,789 INFO L82 PathProgramCache]: Analyzing trace with hash -241334884, now seen corresponding path program 1 times [2018-11-28 18:04:53,791 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:53,791 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:53,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:53,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:53,926 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:53,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:53,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:53,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:53,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:53,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:53,937 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 4 states. [2018-11-28 18:04:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:53,965 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2018-11-28 18:04:53,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:53,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-28 18:04:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:53,970 INFO L225 Difference]: With dead ends: 111 [2018-11-28 18:04:53,970 INFO L226 Difference]: Without dead ends: 81 [2018-11-28 18:04:53,971 INFO L631 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 [2018-11-28 18:04:53,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-28 18:04:53,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2018-11-28 18:04:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-28 18:04:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2018-11-28 18:04:53,979 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 57 [2018-11-28 18:04:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:53,979 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2018-11-28 18:04:53,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2018-11-28 18:04:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 18:04:53,981 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:53,982 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:53,982 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:53,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:53,982 INFO L82 PathProgramCache]: Analyzing trace with hash -650159109, now seen corresponding path program 1 times [2018-11-28 18:04:53,982 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:53,985 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:53,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:54,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:54,278 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 18:04:54,507 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 18:04:54,907 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-11-28 18:04:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 18:04:55,164 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:55,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:55,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-28 18:04:55,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 18:04:55,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 18:04:55,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:04:55,175 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 15 states. [2018-11-28 18:04:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:57,200 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2018-11-28 18:04:57,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 18:04:57,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-11-28 18:04:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:57,202 INFO L225 Difference]: With dead ends: 107 [2018-11-28 18:04:57,203 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:04:57,204 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-11-28 18:04:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:04:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2018-11-28 18:04:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-28 18:04:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-11-28 18:04:57,211 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 57 [2018-11-28 18:04:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:57,213 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-11-28 18:04:57,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 18:04:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-11-28 18:04:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-28 18:04:57,214 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:57,214 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:57,214 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:57,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:57,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1713594914, now seen corresponding path program 1 times [2018-11-28 18:04:57,219 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:57,219 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:57,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:57,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-28 18:04:57,586 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:57,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:57,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 18:04:57,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 18:04:57,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 18:04:57,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:57,597 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 9 states. [2018-11-28 18:04:58,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:58,203 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2018-11-28 18:04:58,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:04:58,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-11-28 18:04:58,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:58,205 INFO L225 Difference]: With dead ends: 76 [2018-11-28 18:04:58,205 INFO L226 Difference]: Without dead ends: 57 [2018-11-28 18:04:58,206 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-28 18:04:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-28 18:04:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 18:04:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2018-11-28 18:04:58,211 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 70 [2018-11-28 18:04:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:58,211 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2018-11-28 18:04:58,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 18:04:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2018-11-28 18:04:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-28 18:04:58,212 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:58,212 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:58,212 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:58,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1573046304, now seen corresponding path program 1 times [2018-11-28 18:04:58,213 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:58,213 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:58,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:58,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:04:58,539 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:58,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:58,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:04:58,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:58,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:58,551 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 12 states. [2018-11-28 18:04:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:59,498 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2018-11-28 18:04:59,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:59,499 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2018-11-28 18:04:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:59,500 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:04:59,500 INFO L226 Difference]: Without dead ends: 58 [2018-11-28 18:04:59,501 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:04:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-28 18:04:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-11-28 18:04:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-28 18:04:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2018-11-28 18:04:59,507 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 70 [2018-11-28 18:04:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:59,510 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2018-11-28 18:04:59,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2018-11-28 18:04:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-28 18:04:59,510 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:59,512 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:59,513 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:59,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash -193580157, now seen corresponding path program 1 times [2018-11-28 18:04:59,513 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:59,513 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:59,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:59,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:05:00,057 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:00,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:00,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:05:00,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:05:00,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:05:00,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:00,071 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 12 states. [2018-11-28 18:05:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:01,246 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2018-11-28 18:05:01,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:05:01,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2018-11-28 18:05:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:01,249 INFO L225 Difference]: With dead ends: 81 [2018-11-28 18:05:01,249 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 18:05:01,250 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:05:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 18:05:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2018-11-28 18:05:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-28 18:05:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2018-11-28 18:05:01,256 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 71 [2018-11-28 18:05:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:01,257 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2018-11-28 18:05:01,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:05:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2018-11-28 18:05:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-28 18:05:01,257 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:01,258 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:01,258 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:01,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash 997969323, now seen corresponding path program 1 times [2018-11-28 18:05:01,259 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:01,259 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:05:01,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:01,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-28 18:05:01,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:05:02,813 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-28 18:05:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-28 18:05:03,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:05:03,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-28 18:05:03,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 18:05:03,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 18:05:03,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:05:03,065 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 17 states. [2018-11-28 18:05:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:04,060 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2018-11-28 18:05:04,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:05:04,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2018-11-28 18:05:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:04,063 INFO L225 Difference]: With dead ends: 83 [2018-11-28 18:05:04,063 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:05:04,063 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-11-28 18:05:04,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:05:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2018-11-28 18:05:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 18:05:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2018-11-28 18:05:04,074 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 71 [2018-11-28 18:05:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:04,077 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2018-11-28 18:05:04,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 18:05:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2018-11-28 18:05:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 18:05:04,078 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:04,078 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:04,079 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:04,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1902363068, now seen corresponding path program 1 times [2018-11-28 18:05:04,079 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:04,079 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 31 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:04,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:04,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:05:04,546 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:04,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:04,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:05:04,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:05:04,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:05:04,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:04,558 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 12 states. [2018-11-28 18:05:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:05,876 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2018-11-28 18:05:05,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:05:05,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2018-11-28 18:05:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:05,879 INFO L225 Difference]: With dead ends: 85 [2018-11-28 18:05:05,880 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 18:05:05,880 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:05:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 18:05:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-11-28 18:05:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 18:05:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2018-11-28 18:05:05,889 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 72 [2018-11-28 18:05:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:05,890 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2018-11-28 18:05:05,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:05:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2018-11-28 18:05:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 18:05:05,891 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:05,891 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:05,891 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:05,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1845453958, now seen corresponding path program 1 times [2018-11-28 18:05:05,896 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:05,896 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:05:05,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:05,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-28 18:05:06,208 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:05:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-28 18:05:06,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:05:06,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-28 18:05:06,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 18:05:06,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 18:05:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:05:06,731 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 17 states. [2018-11-28 18:05:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:07,376 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2018-11-28 18:05:07,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:05:07,377 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2018-11-28 18:05:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:07,379 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:05:07,379 INFO L226 Difference]: Without dead ends: 63 [2018-11-28 18:05:07,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-11-28 18:05:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-28 18:05:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2018-11-28 18:05:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-28 18:05:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-11-28 18:05:07,390 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 72 [2018-11-28 18:05:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:07,390 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-11-28 18:05:07,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 18:05:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-11-28 18:05:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-28 18:05:07,391 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:07,391 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:07,391 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:07,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash -562618969, now seen corresponding path program 1 times [2018-11-28 18:05:07,392 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:07,392 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 33 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:07,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:07,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:05:07,717 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:07,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:07,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:05:07,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:05:07,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:05:07,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:07,728 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 12 states. [2018-11-28 18:05:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:08,717 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2018-11-28 18:05:08,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:05:08,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2018-11-28 18:05:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:08,724 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:05:08,725 INFO L226 Difference]: Without dead ends: 57 [2018-11-28 18:05:08,725 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:05:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-28 18:05:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2018-11-28 18:05:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 18:05:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2018-11-28 18:05:08,733 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 73 [2018-11-28 18:05:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:08,733 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2018-11-28 18:05:08,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:05:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2018-11-28 18:05:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-28 18:05:08,734 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:08,734 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:08,734 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:08,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:08,736 INFO L82 PathProgramCache]: Analyzing trace with hash 130482728, now seen corresponding path program 1 times [2018-11-28 18:05:08,736 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:08,736 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:08,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:08,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 18:05:08,832 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:08,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:08,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:08,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:08,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:08,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:08,842 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 4 states. [2018-11-28 18:05:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:08,851 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-11-28 18:05:08,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:08,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-28 18:05:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:08,857 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:05:08,858 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:05:08,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:05:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:05:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:05:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:05:08,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2018-11-28 18:05:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:08,859 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:05:08,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:05:08,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:05:08,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:05:09,638 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-11-28 18:05:09,638 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-11-28 18:05:09,639 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-11-28 18:05:09,639 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:05:09,639 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:05:09,639 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:05:09,639 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:05:09,639 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:05:09,639 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:05:09,639 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:05:09,639 INFO L444 ceAbstractionStarter]: At program point L68-3(line 68) the Hoare annotation is: (and (not |main_#t~short9|) (not |main_#t~short13|) (fp.eq main_~x~0 main_~x~0) (= (_ bv0 32) |main_#t~ret7|) (= |main_#t~ret10| (_ bv0 32)) |main_#t~short12|) [2018-11-28 18:05:09,639 INFO L448 ceAbstractionStarter]: For program point L68-4(line 68) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point L68-6(line 68) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 57 86) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L444 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (let ((.cse1 (fp.eq main_~x~0 main_~x~0)) (.cse0 (fp.eq main_~y~0 main_~y~0))) (or (and (and (= main_~y~0 main_~res~0) .cse0) (not .cse1)) (and (= main_~x~0 main_~res~0) .cse1 (not .cse0)))) [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point L73-2(line 73) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L444 ceAbstractionStarter]: At program point L73-3(line 73) the Hoare annotation is: (and (= main_~y~0 main_~res~0) |main_#t~short17| (fp.eq main_~y~0 main_~y~0) (not (fp.eq main_~x~0 main_~x~0))) [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point L73-4(line 73) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point L73-6(lines 73 76) no Hoare annotation was computed. [2018-11-28 18:05:09,640 INFO L448 ceAbstractionStarter]: For program point L74(line 74) no Hoare annotation was computed. [2018-11-28 18:05:09,641 INFO L444 ceAbstractionStarter]: At program point L70(line 70) the Hoare annotation is: (let ((.cse1 (fp.eq main_~y~0 main_~y~0)) (.cse0 (fp.eq main_~x~0 main_~x~0))) (or (and .cse0 (not .cse1)) (and .cse1 (not .cse0)))) [2018-11-28 18:05:09,641 INFO L448 ceAbstractionStarter]: For program point L70-1(line 70) no Hoare annotation was computed. [2018-11-28 18:05:09,641 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-28 18:05:09,641 INFO L444 ceAbstractionStarter]: At program point L79(line 79) the Hoare annotation is: (or (and (= main_~x~0 main_~res~0) (not (fp.eq main_~y~0 main_~y~0))) (not (fp.eq main_~x~0 main_~x~0))) [2018-11-28 18:05:09,641 INFO L448 ceAbstractionStarter]: For program point L79-1(line 79) no Hoare annotation was computed. [2018-11-28 18:05:09,641 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-28 18:05:09,641 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 57 86) no Hoare annotation was computed. [2018-11-28 18:05:09,641 INFO L444 ceAbstractionStarter]: At program point L79-3(line 79) the Hoare annotation is: (and (= main_~x~0 main_~res~0) (fp.eq main_~x~0 main_~x~0) |main_#t~short20| (not (fp.eq main_~y~0 main_~y~0))) [2018-11-28 18:05:09,641 INFO L448 ceAbstractionStarter]: For program point L79-4(line 79) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L79-6(lines 79 82) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L451 ceAbstractionStarter]: At program point L67(line 67) the Hoare annotation is: true [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-1(line 67) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-2(line 67) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L444 ceAbstractionStarter]: At program point L67-3(line 67) the Hoare annotation is: (and (= (_ bv1 32) |main_#t~ret7|) |main_#t~short9| (not (fp.eq main_~x~0 main_~x~0))) [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-4(line 67) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 57 86) the Hoare annotation is: true [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-6(line 67) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-7(lines 67 68) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-9(lines 67 83) no Hoare annotation was computed. [2018-11-28 18:05:09,642 INFO L448 ceAbstractionStarter]: For program point L67-11(lines 67 83) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L444 ceAbstractionStarter]: At program point L68(line 68) the Hoare annotation is: (let ((.cse2 (fp.eq main_~x~0 main_~x~0)) (.cse0 (not |main_#t~short9|)) (.cse1 (not |main_#t~short13|))) (or (and .cse0 .cse1 .cse2 (= (_ bv0 32) |main_#t~ret7|)) (and (and (= (_ bv1 32) |main_#t~ret7|) (not .cse2)) (= (bvadd |main_#t~ret8| (_ bv4294967295 32)) (_ bv0 32)) .cse0 .cse1 (not (fp.eq main_~y~0 main_~y~0))))) [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point L68-1(line 68) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point L68-2(line 68) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 43 52) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L451 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 43 52) the Hoare annotation is: true [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-11-28 18:05:09,643 INFO L448 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L444 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-28 18:05:09,644 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 48 50) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L444 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-28 18:05:09,644 INFO L448 ceAbstractionStarter]: For program point L44-1(lines 44 46) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L448 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 43 52) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 40) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 20 41) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L448 ceAbstractionStarter]: For program point L23-1(lines 23 27) no Hoare annotation was computed. [2018-11-28 18:05:09,644 INFO L444 ceAbstractionStarter]: At program point L23-2(lines 23 27) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-11-28 18:05:09,645 INFO L448 ceAbstractionStarter]: For program point L23-3(lines 20 41) no Hoare annotation was computed. [2018-11-28 18:05:09,645 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 40) no Hoare annotation was computed. [2018-11-28 18:05:09,645 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 20 41) the Hoare annotation is: true [2018-11-28 18:05:09,645 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 20 41) no Hoare annotation was computed. [2018-11-28 18:05:09,645 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 40) no Hoare annotation was computed. [2018-11-28 18:05:09,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:09 BoogieIcfgContainer [2018-11-28 18:05:09,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:09,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:09,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:09,662 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:09,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:27" (3/4) ... [2018-11-28 18:05:09,668 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:05:09,675 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-28 18:05:09,676 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:05:09,676 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:05:09,676 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-11-28 18:05:09,676 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-28 18:05:09,683 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-28 18:05:09,684 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 18:05:09,684 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:05:09,711 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-28 18:05:09,764 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:09,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:09,770 INFO L168 Benchmark]: Toolchain (without parser) took 43121.25 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 342.4 MB). Free memory was 951.4 MB in the beginning and 993.9 MB in the end (delta: -42.5 MB). Peak memory consumption was 299.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,775 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:09,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.20 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,777 INFO L168 Benchmark]: Boogie Preprocessor took 117.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,777 INFO L168 Benchmark]: RCFGBuilder took 707.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,778 INFO L168 Benchmark]: TraceAbstraction took 41704.04 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 229.1 MB). Free memory was 1.1 GB in the beginning and 993.9 MB in the end (delta: 86.7 MB). Peak memory consumption was 315.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:09,778 INFO L168 Benchmark]: Witness Printer took 106.66 ms. Allocated memory is still 1.4 GB. Free memory is still 993.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:09,783 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 419.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.20 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 117.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 707.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 41704.04 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 229.1 MB). Free memory was 1.1 GB in the beginning and 993.9 MB in the end (delta: 86.7 MB). Peak memory consumption was 315.8 MB. Max. memory is 11.5 GB. * Witness Printer took 106.66 ms. Allocated memory is still 1.4 GB. Free memory is still 993.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 2 error locations. SAFE Result, 41.6s OverallTime, 31 OverallIterations, 6 TraceHistogramMax, 21.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 2086 SDtfs, 1000 SDslu, 10841 SDs, 0 SdLazy, 4853 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2538 GetRequests, 2194 SyntacticMatches, 8 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=19, 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: 0.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 189 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 156 PreInvPairs, 178 NumberOfFragments, 161 HoareAnnotationTreeSize, 156 FomulaSimplifications, 869 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 1859 NumberOfCodeBlocks, 1859 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2336 ConstructedInterpolants, 35 QuantifiedInterpolants, 443305 SizeOfPredicates, 148 NumberOfNonLiveVariables, 4006 ConjunctsInSsa, 328 ConjunctsInUnsatCore, 42 InterpolantComputations, 20 PerfectInterpolantSequences, 1085/1205 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...