/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0882_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 f2b391f2dac33789fd8a085e873fc8ebca77001b --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false .......................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0882_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 f2b391f2dac33789fd8a085e873fc8ebca77001b --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:31:52,145 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:31:52,147 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:31:52,164 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:31:52,165 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:31:52,166 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:31:52,168 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:31:52,171 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:31:52,175 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:31:52,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:31:52,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:31:52,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:31:52,182 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:31:52,185 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:31:52,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:31:52,189 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:31:52,190 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:31:52,194 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:31:52,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:31:52,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:31:52,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:31:52,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:31:52,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:31:52,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:31:52,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:31:52,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:31:52,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:31:52,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:31:52,212 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:31:52,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:31:52,214 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:31:52,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:31:52,215 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:31:52,215 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:31:52,216 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:31:52,216 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:31:52,217 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:31:52,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:31:52,244 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:31:52,245 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:31:52,245 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:31:52,246 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:31:52,246 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:31:52,246 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:31:52,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:31:52,247 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:31:52,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:31:52,247 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:31:52,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:31:52,247 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:31:52,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:31:52,248 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:31:52,248 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:31:52,248 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:31:52,249 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:31:52,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:31:52,250 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:31:52,250 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:31:52,250 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:31:52,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:31:52,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:31:52,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:31:52,251 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:31:52,251 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:31:52,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:31:52,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:31:52,252 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 -> f2b391f2dac33789fd8a085e873fc8ebca77001b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:31:52,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:31:52,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:31:52,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:31:52,364 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:31:52,365 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:31:52,366 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-21 18:31:52,728 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f85ef65/859bf417db9b4da5be0438063df1d7e1/FLAGc3becb071 [2018-09-21 18:31:52,947 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:31:52,948 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-21 18:31:52,964 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f85ef65/859bf417db9b4da5be0438063df1d7e1/FLAGc3becb071 [2018-09-21 18:31:52,980 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f85ef65/859bf417db9b4da5be0438063df1d7e1 [2018-09-21 18:31:52,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:31:52,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:31:52,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:31:52,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:31:52,997 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:31:52,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:31:52" (1/1) ... [2018-09-21 18:31:53,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478474b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:52, skipping insertion in model container [2018-09-21 18:31:53,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:31:52" (1/1) ... [2018-09-21 18:31:53,015 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:31:53,312 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:882) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.lambda$38(StandardFunctionHandler.java:261) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:160) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1549) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:316) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:513) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1928) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1748) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:278) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:281) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1725) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:278) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:281) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:339) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1573) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:204) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3980) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2445) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:183) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.preRun(MainDispatcher.java:348) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.Dispatcher.run(Dispatcher.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.doTranslation(CACSL2BoogieTranslatorObserver.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:152) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-21 18:31:53,316 INFO L168 Benchmark]: Toolchain (without parser) took 330.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:31:53,321 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:31:53,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.57 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:31:53,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.57 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:882) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:31:55,483 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:31:55,486 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:31:55,503 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:31:55,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:31:55,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:31:55,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:31:55,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:31:55,509 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:31:55,510 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:31:55,512 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:31:55,512 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:31:55,514 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:31:55,515 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:31:55,518 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:31:55,519 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:31:55,520 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:31:55,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:31:55,531 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:31:55,536 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:31:55,537 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:31:55,544 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:31:55,546 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:31:55,546 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:31:55,546 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:31:55,547 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:31:55,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:31:55,552 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:31:55,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:31:55,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:31:55,554 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:31:55,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:31:55,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:31:55,555 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:31:55,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:31:55,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:31:55,556 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:31:55,581 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:31:55,581 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:31:55,582 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:31:55,582 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:31:55,583 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:31:55,583 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:31:55,583 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:31:55,583 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:31:55,584 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:31:55,584 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:31:55,584 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:31:55,584 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:31:55,584 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:31:55,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:31:55,585 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:31:55,585 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:31:55,585 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:31:55,585 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:31:55,585 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:31:55,586 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:31:55,586 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:31:55,586 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:31:55,586 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:31:55,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:31:55,587 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:31:55,587 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:31:55,587 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:31:55,587 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:31:55,587 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:31:55,588 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:31:55,588 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:31:55,588 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 -> f2b391f2dac33789fd8a085e873fc8ebca77001b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:31:55,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:31:55,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:31:55,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:31:55,661 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:31:55,661 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:31:55,662 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-21 18:31:56,004 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc25b1117/aac1b1d8140d4508a86e8312a54fcdfa/FLAGe7971cc62 [2018-09-21 18:31:56,272 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:31:56,273 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-21 18:31:56,292 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc25b1117/aac1b1d8140d4508a86e8312a54fcdfa/FLAGe7971cc62 [2018-09-21 18:31:56,308 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc25b1117/aac1b1d8140d4508a86e8312a54fcdfa [2018-09-21 18:31:56,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:31:56,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:31:56,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:31:56,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:31:56,329 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:31:56,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:31:56" (1/1) ... [2018-09-21 18:31:56,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b18323a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:56, skipping insertion in model container [2018-09-21 18:31:56,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:31:56" (1/1) ... [2018-09-21 18:31:56,346 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:31:56,860 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:31:56,893 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:31:57,115 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:31:57,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57 WrapperNode [2018-09-21 18:31:57,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:31:57,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:31:57,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:31:57,190 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:31:57,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... [2018-09-21 18:31:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:31:57,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:31:57,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:31:57,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:31:57,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:31:57,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:31:57,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:31:57,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2018-09-21 18:31:57,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:31:57,549 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2018-09-21 18:31:57,549 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2018-09-21 18:31:57,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:31:57,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_powf [2018-09-21 18:31:57,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:31:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:31:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:31:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2018-09-21 18:31:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:31:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:31:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:31:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:31:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:31:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:31:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:31:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2018-09-21 18:31:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2018-09-21 18:31:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:31:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_powf [2018-09-21 18:31:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:31:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:31:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:31:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:31:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:31:57,945 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:57,959 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:58,064 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:58,118 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:58,249 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:58,291 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:58,322 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:31:58,332 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:03,456 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:03,487 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:03,784 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:03,813 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:04,673 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:04,715 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:06,967 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:06,977 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:09,143 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:09,183 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:11,425 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:11,432 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:11,896 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:11,920 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:14,027 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:14,052 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:16,230 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:16,237 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:18,570 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:18,576 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:20,966 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:20,980 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:21,506 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:21,514 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:21,663 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:21,669 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:21,912 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:21,919 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:22,002 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:22,009 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:22,690 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:22,696 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:32:23,849 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:32:23,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:32:23 BoogieIcfgContainer [2018-09-21 18:32:23,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:32:23,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:32:23,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:32:23,856 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:32:23,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:31:56" (1/3) ... [2018-09-21 18:32:23,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a0b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:32:23, skipping insertion in model container [2018-09-21 18:32:23,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:31:57" (2/3) ... [2018-09-21 18:32:23,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a0b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:32:23, skipping insertion in model container [2018-09-21 18:32:23,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:32:23" (3/3) ... [2018-09-21 18:32:23,861 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0882_true-unreach-call.c [2018-09-21 18:32:23,872 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:32:23,884 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:32:23,930 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:32:23,931 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:32:23,931 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:32:23,931 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:32:23,931 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:32:23,931 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:32:23,931 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:32:23,932 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:32:23,932 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:32:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states. [2018-09-21 18:32:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:32:23,979 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:32:23,980 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:32:23,983 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:32:23,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1709427335, now seen corresponding path program 1 times [2018-09-21 18:32:23,995 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:32:23,996 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:32:24,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:32:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:32:24,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:32:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:32:24,191 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:32:24,207 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:32:24,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:32:24,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:32:24,229 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:32:24,230 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:32:24,233 INFO L87 Difference]: Start difference. First operand 485 states. Second operand 2 states. [2018-09-21 18:32:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:32:24,294 INFO L93 Difference]: Finished difference Result 485 states and 548 transitions. [2018-09-21 18:32:24,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:32:24,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:32:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:32:24,318 INFO L225 Difference]: With dead ends: 485 [2018-09-21 18:32:24,318 INFO L226 Difference]: Without dead ends: 480 [2018-09-21 18:32:24,320 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:32:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-21 18:32:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2018-09-21 18:32:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-09-21 18:32:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 542 transitions. [2018-09-21 18:32:24,418 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 542 transitions. Word has length 18 [2018-09-21 18:32:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:32:24,419 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 542 transitions. [2018-09-21 18:32:24,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:32:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 542 transitions. [2018-09-21 18:32:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:32:24,421 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:32:24,421 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:32:24,422 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:32:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1459716733, now seen corresponding path program 1 times [2018-09-21 18:32:24,424 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:32:24,424 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:32:24,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:32:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:32:24,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:32:24,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:32:24,714 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:32:24,714 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:24,723 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:24,752 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:24,752 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:32:24,783 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:32:24,798 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:32:24,799 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:24,825 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:24,847 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:24,848 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:32:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:32:25,141 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:32:25,158 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:32:25,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:32:25,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:32:25,160 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:32:25,163 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:32:25,163 INFO L87 Difference]: Start difference. First operand 480 states and 542 transitions. Second operand 9 states. [2018-09-21 18:32:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:32:34,391 INFO L93 Difference]: Finished difference Result 482 states and 543 transitions. [2018-09-21 18:32:34,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:32:34,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-21 18:32:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:32:34,407 INFO L225 Difference]: With dead ends: 482 [2018-09-21 18:32:34,408 INFO L226 Difference]: Without dead ends: 480 [2018-09-21 18:32:34,409 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:32:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-21 18:32:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2018-09-21 18:32:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-09-21 18:32:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 541 transitions. [2018-09-21 18:32:34,469 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 541 transitions. Word has length 36 [2018-09-21 18:32:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:32:34,471 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 541 transitions. [2018-09-21 18:32:34,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:32:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 541 transitions. [2018-09-21 18:32:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:32:34,473 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:32:34,473 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:32:34,474 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:32:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash -772013735, now seen corresponding path program 1 times [2018-09-21 18:32:34,481 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:32:34,481 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:32:34,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:32:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:32:34,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:32:34,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:32:34,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:32:34,676 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:34,681 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:34,693 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:34,693 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:32:34,717 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:32:34,725 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:32:34,726 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:34,729 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:34,732 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:34,733 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:32:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:32:34,875 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:32:34,889 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:32:34,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:32:34,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:32:34,890 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:32:34,891 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:32:34,891 INFO L87 Difference]: Start difference. First operand 480 states and 541 transitions. Second operand 9 states. [2018-09-21 18:32:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:32:42,019 INFO L93 Difference]: Finished difference Result 591 states and 663 transitions. [2018-09-21 18:32:42,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:32:42,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2018-09-21 18:32:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:32:42,025 INFO L225 Difference]: With dead ends: 591 [2018-09-21 18:32:42,025 INFO L226 Difference]: Without dead ends: 588 [2018-09-21 18:32:42,025 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:32:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2018-09-21 18:32:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 480. [2018-09-21 18:32:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-09-21 18:32:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 538 transitions. [2018-09-21 18:32:42,042 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 538 transitions. Word has length 38 [2018-09-21 18:32:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:32:42,043 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 538 transitions. [2018-09-21 18:32:42,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:32:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 538 transitions. [2018-09-21 18:32:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:32:42,044 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:32:42,044 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:32:42,045 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:32:42,045 INFO L82 PathProgramCache]: Analyzing trace with hash -743384584, now seen corresponding path program 1 times [2018-09-21 18:32:42,045 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:32:42,045 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:32:42,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:32:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:32:42,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:32:42,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:32:42,445 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:32:42,445 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,472 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,499 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,499 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2018-09-21 18:32:42,566 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:32:42,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:32:42,571 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,582 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,610 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,610 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:13 [2018-09-21 18:32:42,724 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:32:42,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:32:42,744 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,773 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,891 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,891 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:31 [2018-09-21 18:32:42,963 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:32:42,968 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:32:42,968 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,978 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,993 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:32:42,993 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:19 [2018-09-21 18:32:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:32:43,428 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:32:43,440 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:32:43,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-21 18:32:43,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-21 18:32:43,441 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-21 18:32:43,441 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:32:43,442 INFO L87 Difference]: Start difference. First operand 480 states and 538 transitions. Second operand 13 states. [2018-09-21 18:32:44,573 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-21 18:32:45,396 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-21 18:33:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:33:13,719 INFO L93 Difference]: Finished difference Result 590 states and 659 transitions. [2018-09-21 18:33:13,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-21 18:33:13,727 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2018-09-21 18:33:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:33:13,730 INFO L225 Difference]: With dead ends: 590 [2018-09-21 18:33:13,730 INFO L226 Difference]: Without dead ends: 587 [2018-09-21 18:33:13,731 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-09-21 18:33:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-09-21 18:33:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 479. [2018-09-21 18:33:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-21 18:33:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 536 transitions. [2018-09-21 18:33:13,747 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 536 transitions. Word has length 38 [2018-09-21 18:33:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:33:13,748 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 536 transitions. [2018-09-21 18:33:13,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-21 18:33:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 536 transitions. [2018-09-21 18:33:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-21 18:33:13,751 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:33:13,751 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:33:13,752 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:33:13,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1740676164, now seen corresponding path program 1 times [2018-09-21 18:33:13,752 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:33:13,752 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:33:13,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:33:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:33:14,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:33:23,242 WARN L178 SmtUtils]: Spent 4.00 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-21 18:33:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:33:26,501 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:33:26,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:33:26,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:33:26,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:33:26,520 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:33:26,520 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2018-09-21 18:33:26,522 INFO L87 Difference]: Start difference. First operand 479 states and 536 transitions. Second operand 8 states. [2018-09-21 18:33:42,367 WARN L178 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 13 [2018-09-21 18:34:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:16,293 INFO L93 Difference]: Finished difference Result 485 states and 541 transitions. [2018-09-21 18:34:16,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:34:16,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-09-21 18:34:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:16,532 INFO L225 Difference]: With dead ends: 485 [2018-09-21 18:34:16,532 INFO L226 Difference]: Without dead ends: 481 [2018-09-21 18:34:16,532 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-21 18:34:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-21 18:34:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-21 18:34:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-21 18:34:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 535 transitions. [2018-09-21 18:34:16,547 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 535 transitions. Word has length 41 [2018-09-21 18:34:16,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:16,548 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 535 transitions. [2018-09-21 18:34:16,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:34:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 535 transitions. [2018-09-21 18:34:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-21 18:34:16,550 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:16,551 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:16,551 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1712047013, now seen corresponding path program 1 times [2018-09-21 18:34:16,552 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:16,552 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:34:16,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:34:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:16,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:16,749 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:34:16,754 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:34:16,755 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:16,761 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:16,771 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:16,772 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:34:16,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:34:16,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:34:16,803 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:16,807 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:16,810 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:16,810 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:34:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:16,969 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:16,981 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:16,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:34:16,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:34:16,982 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:34:16,983 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:34:16,983 INFO L87 Difference]: Start difference. First operand 479 states and 535 transitions. Second operand 10 states. [2018-09-21 18:34:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:23,757 INFO L93 Difference]: Finished difference Result 483 states and 538 transitions. [2018-09-21 18:34:23,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:34:23,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-09-21 18:34:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:23,761 INFO L225 Difference]: With dead ends: 483 [2018-09-21 18:34:23,761 INFO L226 Difference]: Without dead ends: 480 [2018-09-21 18:34:23,764 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-21 18:34:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-21 18:34:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2018-09-21 18:34:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-09-21 18:34:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 533 transitions. [2018-09-21 18:34:23,777 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 533 transitions. Word has length 41 [2018-09-21 18:34:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:23,777 INFO L480 AbstractCegarLoop]: Abstraction has 478 states and 533 transitions. [2018-09-21 18:34:23,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:34:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 533 transitions. [2018-09-21 18:34:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-21 18:34:23,783 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:23,784 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:23,785 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:23,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1454979300, now seen corresponding path program 1 times [2018-09-21 18:34:23,785 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:23,785 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:34:23,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:34:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:23,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:24,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:34:24,118 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:34:24,118 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:24,122 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:24,135 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:24,135 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:34:24,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:34:24,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:34:24,182 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:24,189 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:24,194 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:24,194 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:34:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:24,269 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:24,281 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:24,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:34:24,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:34:24,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:34:24,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:34:24,283 INFO L87 Difference]: Start difference. First operand 478 states and 533 transitions. Second operand 8 states. [2018-09-21 18:34:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:29,344 INFO L93 Difference]: Finished difference Result 482 states and 536 transitions. [2018-09-21 18:34:29,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:34:29,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-09-21 18:34:29,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:29,356 INFO L225 Difference]: With dead ends: 482 [2018-09-21 18:34:29,356 INFO L226 Difference]: Without dead ends: 480 [2018-09-21 18:34:29,357 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:34:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-21 18:34:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2018-09-21 18:34:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-09-21 18:34:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 532 transitions. [2018-09-21 18:34:29,379 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 532 transitions. Word has length 41 [2018-09-21 18:34:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:29,380 INFO L480 AbstractCegarLoop]: Abstraction has 478 states and 532 transitions. [2018-09-21 18:34:29,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:34:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 532 transitions. [2018-09-21 18:34:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-21 18:34:29,385 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:29,386 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:29,386 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:29,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1981536879, now seen corresponding path program 1 times [2018-09-21 18:34:29,389 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:29,389 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-21 18:34:29,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:34:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:29,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:29,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:34:29,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:34:29,786 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:29,812 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:29,875 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:29,875 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:34:29,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:34:29,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:34:29,903 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:29,907 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:29,910 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:29,910 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:34:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:30,070 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:30,082 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:30,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:34:30,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:34:30,083 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:34:30,083 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:34:30,085 INFO L87 Difference]: Start difference. First operand 478 states and 532 transitions. Second operand 10 states. [2018-09-21 18:34:31,185 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 21 [2018-09-21 18:34:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:35,968 INFO L93 Difference]: Finished difference Result 486 states and 539 transitions. [2018-09-21 18:34:35,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:34:35,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2018-09-21 18:34:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:35,973 INFO L225 Difference]: With dead ends: 486 [2018-09-21 18:34:35,973 INFO L226 Difference]: Without dead ends: 482 [2018-09-21 18:34:35,974 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-21 18:34:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-09-21 18:34:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 478. [2018-09-21 18:34:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-09-21 18:34:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 530 transitions. [2018-09-21 18:34:35,988 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 530 transitions. Word has length 43 [2018-09-21 18:34:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:35,988 INFO L480 AbstractCegarLoop]: Abstraction has 478 states and 530 transitions. [2018-09-21 18:34:35,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:34:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 530 transitions. [2018-09-21 18:34:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-21 18:34:35,996 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:35,996 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:35,997 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash -538423055, now seen corresponding path program 1 times [2018-09-21 18:34:35,998 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:35,999 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 [2018-09-21 18:34:36,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:34:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:36,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:36,315 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:36,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:36,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-21 18:34:36,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-21 18:34:36,328 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-21 18:34:36,328 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-21 18:34:36,328 INFO L87 Difference]: Start difference. First operand 478 states and 530 transitions. Second operand 7 states. [2018-09-21 18:34:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:46,364 INFO L93 Difference]: Finished difference Result 484 states and 535 transitions. [2018-09-21 18:34:46,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-21 18:34:46,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2018-09-21 18:34:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:46,368 INFO L225 Difference]: With dead ends: 484 [2018-09-21 18:34:46,368 INFO L226 Difference]: Without dead ends: 478 [2018-09-21 18:34:46,369 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:34:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2018-09-21 18:34:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 476. [2018-09-21 18:34:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2018-09-21 18:34:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 527 transitions. [2018-09-21 18:34:46,381 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 527 transitions. Word has length 43 [2018-09-21 18:34:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:46,382 INFO L480 AbstractCegarLoop]: Abstraction has 476 states and 527 transitions. [2018-09-21 18:34:46,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-21 18:34:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 527 transitions. [2018-09-21 18:34:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-21 18:34:46,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:46,384 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:46,384 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:46,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1778245735, now seen corresponding path program 1 times [2018-09-21 18:34:46,385 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:46,385 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) [2018-09-21 18:34:46,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-21 18:34:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:46,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:46,546 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:34:46,551 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:34:46,552 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:46,574 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:46,585 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:46,586 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:34:46,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:34:46,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:34:46,628 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:46,632 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:46,634 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:46,634 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:34:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:46,758 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:46,772 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:46,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:34:46,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:34:46,773 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:34:46,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:34:46,775 INFO L87 Difference]: Start difference. First operand 476 states and 527 transitions. Second operand 9 states. [2018-09-21 18:34:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:52,956 INFO L93 Difference]: Finished difference Result 798 states and 873 transitions. [2018-09-21 18:34:52,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:34:52,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-09-21 18:34:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:52,962 INFO L225 Difference]: With dead ends: 798 [2018-09-21 18:34:52,962 INFO L226 Difference]: Without dead ends: 567 [2018-09-21 18:34:52,963 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:34:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-09-21 18:34:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 460. [2018-09-21 18:34:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-09-21 18:34:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 507 transitions. [2018-09-21 18:34:52,977 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 507 transitions. Word has length 43 [2018-09-21 18:34:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:52,977 INFO L480 AbstractCegarLoop]: Abstraction has 460 states and 507 transitions. [2018-09-21 18:34:52,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:34:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 507 transitions. [2018-09-21 18:34:52,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:34:52,978 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:52,978 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:52,981 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1293787560, now seen corresponding path program 1 times [2018-09-21 18:34:52,982 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:52,982 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-21 18:34:52,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:34:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:53,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:53,319 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:34:53,333 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:34:53,334 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:53,339 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:53,351 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:53,351 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:34:53,377 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:34:53,381 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:34:53,382 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:53,386 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:53,390 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:53,390 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:34:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:53,452 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:53,464 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:53,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:34:53,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:34:53,465 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:34:53,465 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:34:53,466 INFO L87 Difference]: Start difference. First operand 460 states and 507 transitions. Second operand 8 states. [2018-09-21 18:34:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:34:58,441 INFO L93 Difference]: Finished difference Result 631 states and 687 transitions. [2018-09-21 18:34:58,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:34:58,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2018-09-21 18:34:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:34:58,446 INFO L225 Difference]: With dead ends: 631 [2018-09-21 18:34:58,446 INFO L226 Difference]: Without dead ends: 576 [2018-09-21 18:34:58,447 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:34:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2018-09-21 18:34:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 421. [2018-09-21 18:34:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-09-21 18:34:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 458 transitions. [2018-09-21 18:34:58,465 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 458 transitions. Word has length 60 [2018-09-21 18:34:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:34:58,465 INFO L480 AbstractCegarLoop]: Abstraction has 421 states and 458 transitions. [2018-09-21 18:34:58,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:34:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 458 transitions. [2018-09-21 18:34:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-21 18:34:58,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:34:58,469 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:34:58,469 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:34:58,469 INFO L82 PathProgramCache]: Analyzing trace with hash -255947042, now seen corresponding path program 1 times [2018-09-21 18:34:58,471 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:34:58,471 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-21 18:34:58,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:34:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:34:58,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:34:59,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:34:59,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:34:59,080 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:59,095 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:59,130 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:59,131 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:34:59,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:34:59,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:34:59,164 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:34:59,169 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:59,173 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:34:59,173 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:34:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:34:59,341 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:34:59,354 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:34:59,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:34:59,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:34:59,355 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:34:59,355 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:34:59,355 INFO L87 Difference]: Start difference. First operand 421 states and 458 transitions. Second operand 9 states. [2018-09-21 18:35:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:35:04,729 INFO L93 Difference]: Finished difference Result 530 states and 577 transitions. [2018-09-21 18:35:04,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:35:04,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-09-21 18:35:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:35:04,740 INFO L225 Difference]: With dead ends: 530 [2018-09-21 18:35:04,740 INFO L226 Difference]: Without dead ends: 312 [2018-09-21 18:35:04,740 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:35:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-09-21 18:35:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2018-09-21 18:35:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-09-21 18:35:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 336 transitions. [2018-09-21 18:35:04,752 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 336 transitions. Word has length 70 [2018-09-21 18:35:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:35:04,753 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 336 transitions. [2018-09-21 18:35:04,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:35:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 336 transitions. [2018-09-21 18:35:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-21 18:35:04,755 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:35:04,756 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:35:04,756 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:35:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1291870716, now seen corresponding path program 1 times [2018-09-21 18:35:04,757 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:35:04,757 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-21 18:35:04,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:35:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:35:05,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:35:05,252 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:35:05,256 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:35:05,257 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,265 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:29 [2018-09-21 18:35:05,323 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:35:05,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:35:05,330 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,334 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,344 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,344 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:17 [2018-09-21 18:35:05,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-09-21 18:35:05,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-09-21 18:35:05,427 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,432 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,450 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:35:05,450 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2018-09-21 18:35:05,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-09-21 18:35:05,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-09-21 18:35:05,605 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,610 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:35:05,625 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:35:05,626 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:32 [2018-09-21 18:35:51,688 WARN L178 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:36:43,100 WARN L178 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:36:45,390 WARN L819 $PredicateComparison]: unable to prove that (exists ((fabs_float_~ix~4 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~4) ((_ extract 30 23) fabs_float_~ix~4) ((_ extract 22 0) fabs_float_~ix~4)) (fp.div RNE ((_ to_fp 8 24) RNE 1.0) (_ +zero 8 24))) (= (fp.div RNE ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE 1.0)) (let ((.cse0 (bvand fabs_float_~ix~4 (_ bv2147483647 32)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))) |c_main_#t~ret89|))) is different from true [2018-09-21 18:36:47,794 WARN L819 $PredicateComparison]: unable to prove that (exists ((fabs_float_~ix~4 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~4) ((_ extract 30 23) fabs_float_~ix~4) ((_ extract 22 0) fabs_float_~ix~4)) (fp.div RNE ((_ to_fp 8 24) RNE 1.0) (_ +zero 8 24))) (= (fp.div RNE ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE 1.0)) (let ((.cse0 (bvand fabs_float_~ix~4 (_ bv2147483647 32)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))) c_main_~res~0))) is different from true [2018-09-21 18:36:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:36:47,970 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:36:47,985 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:36:47,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-09-21 18:36:47,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-21 18:36:47,986 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-21 18:36:47,987 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=231, Unknown=31, NotChecked=66, Total=380 [2018-09-21 18:36:47,987 INFO L87 Difference]: Start difference. First operand 306 states and 336 transitions. Second operand 20 states. [2018-09-21 18:37:20,692 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:254) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:690) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:603) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-09-21 18:37:20,702 INFO L168 Benchmark]: Toolchain (without parser) took 324388.49 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 259.5 MB). Free memory was 949.2 MB in the beginning and 979.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 229.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:20,703 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:37:20,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 872.13 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 916.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:20,708 INFO L168 Benchmark]: Boogie Preprocessor took 274.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 916.9 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:20,709 INFO L168 Benchmark]: RCFGBuilder took 26385.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.6 MB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:20,709 INFO L168 Benchmark]: TraceAbstraction took 296849.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 981.7 MB in the beginning and 979.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 126.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:37:20,716 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 872.13 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 916.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 274.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 916.9 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 26385.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.6 MB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 296849.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 981.7 MB in the beginning and 979.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 126.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...