/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 -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_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 ......................................................................................................................................................... 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 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:24:22,354 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:24:22,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:24:22,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:24:22,374 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:24:22,375 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:24:22,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:24:22,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:24:22,380 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:24:22,381 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:24:22,382 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:24:22,382 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:24:22,383 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:24:22,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:24:22,385 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:24:22,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:24:22,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:24:22,388 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:24:22,390 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:24:22,392 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:24:22,393 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:24:22,394 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:24:22,397 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:24:22,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:24:22,398 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:24:22,399 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:24:22,400 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:24:22,400 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:24:22,401 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:24:22,403 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:24:22,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:24:22,404 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:24:22,404 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:24:22,404 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:24:22,405 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:24:22,406 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:24:22,406 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:24:22,422 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:24:22,422 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:24:22,423 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:24:22,423 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:24:22,424 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:24:22,424 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:24:22,424 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:24:22,424 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:24:22,425 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:24:22,425 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:24:22,425 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:24:22,425 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:24:22,425 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:24:22,426 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:24:22,426 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:24:22,426 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:24:22,426 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:24:22,426 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:24:22,427 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:24:22,427 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:24:22,427 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:24:22,427 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:24:22,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:24:22,428 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:24:22,428 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:24:22,428 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:24:22,428 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:24:22,428 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:24:22,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:24:22,429 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 [2018-09-20 15:24:22,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:24:22,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:24:22,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:24:22,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:24:22,538 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:24:22,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-20 15:24:22,905 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad837f03a/41cf333d964f42de8f0b503bce236e27/FLAG79df9fbf4 [2018-09-20 15:24:23,136 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:24:23,137 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-20 15:24:23,149 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad837f03a/41cf333d964f42de8f0b503bce236e27/FLAG79df9fbf4 [2018-09-20 15:24:23,165 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad837f03a/41cf333d964f42de8f0b503bce236e27 [2018-09-20 15:24:23,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:24:23,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:24:23,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:24:23,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:24:23,180 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:24:23,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:24:23" (1/1) ... [2018-09-20 15:24:23,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7318d72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:23, skipping insertion in model container [2018-09-20 15:24:23,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:24:23" (1/1) ... [2018-09-20 15:24:23,196 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:24:23,542 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) [2018-09-20 15:24:23,553 INFO L168 Benchmark]: Toolchain (without parser) took 383.26 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:24:23,556 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:24:23,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.81 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-20 15:24:23,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 378.81 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 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 0.1.23-40ef509 [2018-09-20 15:24:25,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:24:25,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:24:25,718 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:24:25,718 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:24:25,719 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:24:25,721 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:24:25,722 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:24:25,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:24:25,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:24:25,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:24:25,726 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:24:25,727 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:24:25,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:24:25,729 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:24:25,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:24:25,731 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:24:25,733 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:24:25,735 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:24:25,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:24:25,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:24:25,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:24:25,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:24:25,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:24:25,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:24:25,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:24:25,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:24:25,745 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:24:25,746 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:24:25,747 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:24:25,747 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:24:25,748 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:24:25,748 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:24:25,749 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:24:25,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:24:25,751 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:24:25,751 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:24:25,766 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:24:25,767 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:24:25,768 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:24:25,768 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:24:25,769 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:24:25,769 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:24:25,769 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:24:25,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:24:25,769 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:24:25,770 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:24:25,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:24:25,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:24:25,770 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:24:25,771 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:24:25,771 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:24:25,771 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:24:25,771 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:24:25,771 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:24:25,772 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:24:25,772 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:24:25,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:24:25,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:24:25,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:24:25,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:24:25,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:24:25,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:24:25,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:24:25,776 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:24:25,776 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:24:25,777 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:24:25,777 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:24:25,777 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 [2018-09-20 15:24:25,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:24:25,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:24:25,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:24:25,858 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:24:25,858 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:24:25,859 INFO L418 ainManager$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 [2018-09-20 15:24:26,207 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ad4d766/88f21b8040d94791b0429acd725eb215/FLAGa5e5988dd [2018-09-20 15:24:26,399 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:24:26,400 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0882_true-unreach-call.c [2018-09-20 15:24:26,416 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ad4d766/88f21b8040d94791b0429acd725eb215/FLAGa5e5988dd [2018-09-20 15:24:26,432 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ad4d766/88f21b8040d94791b0429acd725eb215 [2018-09-20 15:24:26,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:24:26,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:24:26,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:24:26,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:24:26,449 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:24:26,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:24:26" (1/1) ... [2018-09-20 15:24:26,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b80a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:26, skipping insertion in model container [2018-09-20 15:24:26,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:24:26" (1/1) ... [2018-09-20 15:24:26,466 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:24:26,890 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:24:26,925 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:24:27,123 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:24:27,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27 WrapperNode [2018-09-20 15:24:27,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:24:27,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:24:27,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:24:27,173 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:24:27,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... [2018-09-20 15:24:27,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:24:27,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:24:27,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:24:27,420 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:24:27,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:24:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:24:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:24:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2018-09-20 15:24:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-20 15:24:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2018-09-20 15:24:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2018-09-20 15:24:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-20 15:24:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_powf [2018-09-20 15:24:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:24:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:24:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:24:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2018-09-20 15:24:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:24:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:24:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:24:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:24:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:24:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:24:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_powf [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:24:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:24:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:24:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:24:27,932 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:27,989 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:28,122 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:28,161 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:28,369 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:28,415 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:28,484 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:28,508 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:33,714 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:33,745 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:34,125 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:34,134 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:35,622 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:35,633 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:37,896 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:37,907 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:40,087 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:40,120 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:42,307 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:42,313 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:42,834 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:42,842 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:44,918 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:44,942 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:48,244 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:48,266 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:50,602 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:50,610 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:52,846 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:52,861 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:53,749 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:53,757 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:53,942 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:53,978 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:54,260 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:54,266 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:54,294 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:54,305 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:55,216 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:55,229 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:24:56,201 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:24:56,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:24:56 BoogieIcfgContainer [2018-09-20 15:24:56,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:24:56,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:24:56,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:24:56,209 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:24:56,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:24:26" (1/3) ... [2018-09-20 15:24:56,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e516552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:24:56, skipping insertion in model container [2018-09-20 15:24:56,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:24:27" (2/3) ... [2018-09-20 15:24:56,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e516552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:24:56, skipping insertion in model container [2018-09-20 15:24:56,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:24:56" (3/3) ... [2018-09-20 15:24:56,214 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0882_true-unreach-call.c [2018-09-20 15:24:56,225 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:24:56,235 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:24:56,298 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:24:56,299 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:24:56,299 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:24:56,299 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:24:56,300 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:24:56,300 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:24:56,300 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:24:56,300 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:24:56,300 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:24:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states. [2018-09-20 15:24:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-20 15:24:56,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:24:56,348 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:24:56,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:24:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1709427335, now seen corresponding path program 1 times [2018-09-20 15:24:56,365 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:24:56,365 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 15:24:56,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:24:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:24:56,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:24:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:24:56,656 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:24:56,677 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:24:56,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:24:56,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:24:56,699 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:24:56,700 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:24:56,703 INFO L87 Difference]: Start difference. First operand 485 states. Second operand 2 states. [2018-09-20 15:24:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:24:56,801 INFO L93 Difference]: Finished difference Result 961 states and 1234 transitions. [2018-09-20 15:24:56,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:24:56,802 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-20 15:24:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:24:56,825 INFO L225 Difference]: With dead ends: 961 [2018-09-20 15:24:56,825 INFO L226 Difference]: Without dead ends: 480 [2018-09-20 15:24:56,835 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 [2018-09-20 15:24:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-20 15:24:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2018-09-20 15:24:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-09-20 15:24:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 542 transitions. [2018-09-20 15:24:56,932 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 542 transitions. Word has length 18 [2018-09-20 15:24:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:24:56,933 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 542 transitions. [2018-09-20 15:24:56,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:24:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 542 transitions. [2018-09-20 15:24:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-20 15:24:56,935 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:24:56,936 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] [2018-09-20 15:24:56,936 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:24:56,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1459716733, now seen corresponding path program 1 times [2018-09-20 15:24:56,937 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:24:56,939 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:24:56,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:24:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:24:57,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:24:57,252 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 [2018-09-20 15:24:57,271 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:24:57,272 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:24:57,293 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:24:57,307 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:24:57,308 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:24:57,364 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:24:57,380 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:24:57,380 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:24:57,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:24:57,399 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:24:57,400 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:24:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:24:57,643 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:24:57,657 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:24:57,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:24:57,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:24:57,659 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:24:57,660 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:24:57,660 INFO L87 Difference]: Start difference. First operand 480 states and 542 transitions. Second operand 9 states. [2018-09-20 15:25:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:25:06,172 INFO L93 Difference]: Finished difference Result 488 states and 549 transitions. [2018-09-20 15:25:06,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-20 15:25:06,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-20 15:25:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:25:06,187 INFO L225 Difference]: With dead ends: 488 [2018-09-20 15:25:06,187 INFO L226 Difference]: Without dead ends: 482 [2018-09-20 15:25:06,189 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 [2018-09-20 15:25:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-09-20 15:25:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 480. [2018-09-20 15:25:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-09-20 15:25:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 541 transitions. [2018-09-20 15:25:06,231 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 541 transitions. Word has length 36 [2018-09-20 15:25:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:25:06,232 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 541 transitions. [2018-09-20 15:25:06,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:25:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 541 transitions. [2018-09-20 15:25:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:25:06,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:25:06,234 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:25:06,235 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:25:06,235 INFO L82 PathProgramCache]: Analyzing trace with hash -772013735, now seen corresponding path program 1 times [2018-09-20 15:25:06,235 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:25:06,236 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:25:06,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:25:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:25:06,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:25:06,426 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:25:06,430 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:25:06,431 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:25:06,436 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:06,448 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:06,449 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:25:06,474 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:25:06,480 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:25:06,480 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:25:06,483 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:06,488 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:06,488 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:25:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:25:06,630 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:25:06,646 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:25:06,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:25:06,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:25:06,647 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:25:06,648 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:25:06,649 INFO L87 Difference]: Start difference. First operand 480 states and 541 transitions. Second operand 9 states. [2018-09-20 15:25:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:25:14,251 INFO L93 Difference]: Finished difference Result 595 states and 667 transitions. [2018-09-20 15:25:14,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-20 15:25:14,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2018-09-20 15:25:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:25:14,258 INFO L225 Difference]: With dead ends: 595 [2018-09-20 15:25:14,259 INFO L226 Difference]: Without dead ends: 588 [2018-09-20 15:25:14,259 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 [2018-09-20 15:25:14,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2018-09-20 15:25:14,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 480. [2018-09-20 15:25:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-09-20 15:25:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 538 transitions. [2018-09-20 15:25:14,288 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 538 transitions. Word has length 38 [2018-09-20 15:25:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:25:14,289 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 538 transitions. [2018-09-20 15:25:14,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:25:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 538 transitions. [2018-09-20 15:25:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:25:14,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:25:14,292 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:25:14,292 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:25:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash -743384584, now seen corresponding path program 1 times [2018-09-20 15:25:14,293 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:25:14,293 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-20 15:25:14,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:25:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:25:14,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:25:14,603 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:25:14,611 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:25:14,611 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,624 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,643 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,644 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2018-09-20 15:25:14,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:25:14,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:25:14,711 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,724 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,743 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,743 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:13 [2018-09-20 15:25:14,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:25:14,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:25:14,851 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,857 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,911 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:14,912 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:31 [2018-09-20 15:25:14,986 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:25:15,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:25:15,006 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:25:15,032 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:15,109 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:25:15,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:19 [2018-09-20 15:25:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:25:15,599 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:25:15,610 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:25:15,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-20 15:25:15,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-20 15:25:15,612 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-20 15:25:15,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:25:15,612 INFO L87 Difference]: Start difference. First operand 480 states and 538 transitions. Second operand 13 states. [2018-09-20 15:25:17,621 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-20 15:25:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:25:35,408 INFO L93 Difference]: Finished difference Result 512 states and 570 transitions. [2018-09-20 15:25:35,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-20 15:25:35,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2018-09-20 15:25:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:25:35,415 INFO L225 Difference]: With dead ends: 512 [2018-09-20 15:25:35,415 INFO L226 Difference]: Without dead ends: 505 [2018-09-20 15:25:35,416 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-09-20 15:25:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-09-20 15:25:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 479. [2018-09-20 15:25:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-20 15:25:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 536 transitions. [2018-09-20 15:25:35,437 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 536 transitions. Word has length 38 [2018-09-20 15:25:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:25:35,438 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 536 transitions. [2018-09-20 15:25:35,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-20 15:25:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 536 transitions. [2018-09-20 15:25:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-20 15:25:35,440 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:25:35,440 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] [2018-09-20 15:25:35,441 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:25:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1740676164, now seen corresponding path program 1 times [2018-09-20 15:25:35,442 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:25:35,442 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-20 15:25:35,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:25:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:25:35,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:25:43,283 WARN L178 SmtUtils]: Spent 3.73 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-20 15:25:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:25:45,243 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:25:45,268 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:25:45,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:25:45,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:25:45,268 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:25:45,269 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:25:45,269 INFO L87 Difference]: Start difference. First operand 479 states and 536 transitions. Second operand 8 states. [2018-09-20 15:26:04,502 WARN L178 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 13 [2018-09-20 15:26:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:26:36,245 INFO L93 Difference]: Finished difference Result 487 states and 543 transitions. [2018-09-20 15:26:36,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-20 15:26:36,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-09-20 15:26:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:26:36,250 INFO L225 Difference]: With dead ends: 487 [2018-09-20 15:26:36,251 INFO L226 Difference]: Without dead ends: 481 [2018-09-20 15:26:36,252 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-20 15:26:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-20 15:26:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-20 15:26:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-20 15:26:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 535 transitions. [2018-09-20 15:26:36,277 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 535 transitions. Word has length 41 [2018-09-20 15:26:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:26:36,277 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 535 transitions. [2018-09-20 15:26:36,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:26:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 535 transitions. [2018-09-20 15:26:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-20 15:26:36,280 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:26:36,280 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] [2018-09-20 15:26:36,280 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:26:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1712047013, now seen corresponding path program 1 times [2018-09-20 15:26:36,281 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:26:36,282 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) [2018-09-20 15:26:36,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-20 15:26:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:26:36,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:26:36,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:26:36,535 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:26:36,535 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:26:36,541 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:36,553 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:36,554 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:26:36,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:26:36,583 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:26:36,584 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:26:36,587 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:36,591 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:36,591 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:26:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:26:36,919 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:26:36,931 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:26:36,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:26:36,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:26:36,932 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:26:36,932 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:26:36,932 INFO L87 Difference]: Start difference. First operand 479 states and 535 transitions. Second operand 10 states. [2018-09-20 15:26:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:26:43,959 INFO L93 Difference]: Finished difference Result 487 states and 542 transitions. [2018-09-20 15:26:43,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:26:43,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-09-20 15:26:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:26:43,963 INFO L225 Difference]: With dead ends: 487 [2018-09-20 15:26:43,963 INFO L226 Difference]: Without dead ends: 480 [2018-09-20 15:26:43,964 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-20 15:26:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-20 15:26:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2018-09-20 15:26:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-09-20 15:26:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 533 transitions. [2018-09-20 15:26:43,988 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 533 transitions. Word has length 41 [2018-09-20 15:26:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:26:43,988 INFO L480 AbstractCegarLoop]: Abstraction has 478 states and 533 transitions. [2018-09-20 15:26:43,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:26:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 533 transitions. [2018-09-20 15:26:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-20 15:26:43,991 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:26:43,991 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] [2018-09-20 15:26:43,991 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:26:43,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1454979300, now seen corresponding path program 1 times [2018-09-20 15:26:43,992 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:26:43,993 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-20 15:26:44,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:26:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:26:44,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:26:44,224 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:26:44,227 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:26:44,228 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:26:44,236 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:44,250 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:44,250 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:26:44,271 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:26:44,280 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:26:44,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:26:44,285 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:44,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:44,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:26:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:26:44,358 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:26:44,370 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:26:44,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:26:44,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:26:44,371 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:26:44,371 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:26:44,372 INFO L87 Difference]: Start difference. First operand 478 states and 533 transitions. Second operand 8 states. [2018-09-20 15:26:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:26:50,316 INFO L93 Difference]: Finished difference Result 486 states and 540 transitions. [2018-09-20 15:26:50,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-20 15:26:50,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-09-20 15:26:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:26:50,321 INFO L225 Difference]: With dead ends: 486 [2018-09-20 15:26:50,321 INFO L226 Difference]: Without dead ends: 480 [2018-09-20 15:26:50,322 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-20 15:26:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-09-20 15:26:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2018-09-20 15:26:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-09-20 15:26:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 532 transitions. [2018-09-20 15:26:50,344 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 532 transitions. Word has length 41 [2018-09-20 15:26:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:26:50,344 INFO L480 AbstractCegarLoop]: Abstraction has 478 states and 532 transitions. [2018-09-20 15:26:50,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:26:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 532 transitions. [2018-09-20 15:26:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-20 15:26:50,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:26:50,347 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] [2018-09-20 15:26:50,347 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:26:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1981536879, now seen corresponding path program 1 times [2018-09-20 15:26:50,349 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:26:50,349 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-20 15:26:50,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:26:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:26:50,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:26:50,701 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:26:50,712 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:26:50,713 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:26:50,738 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:50,790 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:50,790 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:26:50,811 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:26:50,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:26:50,814 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:26:50,817 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:50,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:26:50,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:26:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:26:51,043 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:26:51,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:26:51,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:26:51,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:26:51,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:26:51,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:26:51,056 INFO L87 Difference]: Start difference. First operand 478 states and 532 transitions. Second operand 10 states. [2018-09-20 15:26:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:26:57,914 INFO L93 Difference]: Finished difference Result 494 states and 549 transitions. [2018-09-20 15:26:57,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:26:57,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2018-09-20 15:26:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:26:57,919 INFO L225 Difference]: With dead ends: 494 [2018-09-20 15:26:57,919 INFO L226 Difference]: Without dead ends: 486 [2018-09-20 15:26:57,920 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 [2018-09-20 15:26:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2018-09-20 15:26:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 478. [2018-09-20 15:26:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-09-20 15:26:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 530 transitions. [2018-09-20 15:26:57,939 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 530 transitions. Word has length 43 [2018-09-20 15:26:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:26:57,939 INFO L480 AbstractCegarLoop]: Abstraction has 478 states and 530 transitions. [2018-09-20 15:26:57,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:26:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 530 transitions. [2018-09-20 15:26:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-20 15:26:57,941 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:26:57,941 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] [2018-09-20 15:26:57,941 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:26:57,941 INFO L82 PathProgramCache]: Analyzing trace with hash -538423055, now seen corresponding path program 1 times [2018-09-20 15:26:57,942 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:26:57,942 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 [2018-09-20 15:26:57,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:26:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:26:58,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:26:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:26:58,176 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:26:58,187 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:26:58,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-20 15:26:58,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-20 15:26:58,188 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-20 15:26:58,188 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-20 15:26:58,189 INFO L87 Difference]: Start difference. First operand 478 states and 530 transitions. Second operand 7 states. [2018-09-20 15:27:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:27:08,459 INFO L93 Difference]: Finished difference Result 486 states and 537 transitions. [2018-09-20 15:27:08,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-20 15:27:08,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2018-09-20 15:27:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:27:08,462 INFO L225 Difference]: With dead ends: 486 [2018-09-20 15:27:08,462 INFO L226 Difference]: Without dead ends: 478 [2018-09-20 15:27:08,463 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 [2018-09-20 15:27:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2018-09-20 15:27:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 476. [2018-09-20 15:27:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2018-09-20 15:27:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 527 transitions. [2018-09-20 15:27:08,486 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 527 transitions. Word has length 43 [2018-09-20 15:27:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:27:08,486 INFO L480 AbstractCegarLoop]: Abstraction has 476 states and 527 transitions. [2018-09-20 15:27:08,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-20 15:27:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 527 transitions. [2018-09-20 15:27:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-20 15:27:08,487 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:27:08,487 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] [2018-09-20 15:27:08,489 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:27:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1778245735, now seen corresponding path program 1 times [2018-09-20 15:27:08,490 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:27:08,490 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) [2018-09-20 15:27:08,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-20 15:27:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:27:08,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:27:08,796 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:27:08,800 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:27:08,800 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:08,824 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:08,836 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:08,837 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:27:08,857 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:27:08,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:27:08,861 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:08,865 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:08,867 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:08,868 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:27:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:27:09,002 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:27:09,013 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:27:09,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:27:09,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:27:09,014 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:27:09,014 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:27:09,014 INFO L87 Difference]: Start difference. First operand 476 states and 527 transitions. Second operand 9 states. [2018-09-20 15:27:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:27:14,200 INFO L93 Difference]: Finished difference Result 802 states and 878 transitions. [2018-09-20 15:27:14,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:27:14,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-09-20 15:27:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:27:14,206 INFO L225 Difference]: With dead ends: 802 [2018-09-20 15:27:14,206 INFO L226 Difference]: Without dead ends: 567 [2018-09-20 15:27:14,208 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:27:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-09-20 15:27:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 460. [2018-09-20 15:27:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-09-20 15:27:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 507 transitions. [2018-09-20 15:27:14,232 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 507 transitions. Word has length 43 [2018-09-20 15:27:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:27:14,232 INFO L480 AbstractCegarLoop]: Abstraction has 460 states and 507 transitions. [2018-09-20 15:27:14,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:27:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 507 transitions. [2018-09-20 15:27:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-20 15:27:14,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:27:14,235 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] [2018-09-20 15:27:14,235 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:27:14,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1293787560, now seen corresponding path program 1 times [2018-09-20 15:27:14,236 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:27:14,236 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-20 15:27:14,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:27:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:27:14,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:27:14,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:27:14,559 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:27:14,560 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:14,568 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:14,580 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:14,580 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:27:14,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:27:14,605 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 21 treesize of output 9 [2018-09-20 15:27:14,606 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:14,608 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:14,611 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:14,611 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:27:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:27:14,701 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:27:14,714 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:27:14,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:27:14,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:27:14,715 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:27:14,715 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:27:14,716 INFO L87 Difference]: Start difference. First operand 460 states and 507 transitions. Second operand 8 states. [2018-09-20 15:27:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:27:19,441 INFO L93 Difference]: Finished difference Result 720 states and 791 transitions. [2018-09-20 15:27:19,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-20 15:27:19,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2018-09-20 15:27:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:27:19,447 INFO L225 Difference]: With dead ends: 720 [2018-09-20 15:27:19,447 INFO L226 Difference]: Without dead ends: 413 [2018-09-20 15:27:19,450 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 [2018-09-20 15:27:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-09-20 15:27:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-09-20 15:27:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-09-20 15:27:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 447 transitions. [2018-09-20 15:27:19,472 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 447 transitions. Word has length 60 [2018-09-20 15:27:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:27:19,473 INFO L480 AbstractCegarLoop]: Abstraction has 413 states and 447 transitions. [2018-09-20 15:27:19,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:27:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 447 transitions. [2018-09-20 15:27:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-20 15:27:19,474 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:27:19,475 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] [2018-09-20 15:27:19,475 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:27:19,475 INFO L82 PathProgramCache]: Analyzing trace with hash -255947042, now seen corresponding path program 1 times [2018-09-20 15:27:19,478 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:27:19,479 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-20 15:27:19,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:27:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:27:19,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:27:19,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:27:19,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:27:19,898 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:19,924 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:20,000 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:20,000 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:27:20,086 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:27:20,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:27:20,093 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:20,096 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:20,098 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:20,099 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:27:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:27:20,307 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:27:20,325 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:27:20,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:27:20,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:27:20,326 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:27:20,326 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:27:20,326 INFO L87 Difference]: Start difference. First operand 413 states and 447 transitions. Second operand 9 states. [2018-09-20 15:27:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:27:25,023 INFO L93 Difference]: Finished difference Result 526 states and 571 transitions. [2018-09-20 15:27:25,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:27:25,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-09-20 15:27:25,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:27:25,030 INFO L225 Difference]: With dead ends: 526 [2018-09-20 15:27:25,030 INFO L226 Difference]: Without dead ends: 304 [2018-09-20 15:27:25,031 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 [2018-09-20 15:27:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-09-20 15:27:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2018-09-20 15:27:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-09-20 15:27:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2018-09-20 15:27:25,045 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 70 [2018-09-20 15:27:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:27:25,046 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2018-09-20 15:27:25,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:27:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2018-09-20 15:27:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-20 15:27:25,047 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:27:25,047 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] [2018-09-20 15:27:25,047 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:27:25,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1291870716, now seen corresponding path program 1 times [2018-09-20 15:27:25,048 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:27:25,048 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-20 15:27:25,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:27:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:27:25,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:27:25,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:27:25,645 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:27:25,646 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,670 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,670 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:29 [2018-09-20 15:27:25,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:27:25,723 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:27:25,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,727 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,737 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,737 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:17 [2018-09-20 15:27:25,821 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 [2018-09-20 15:27:25,826 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 [2018-09-20 15:27:25,826 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,831 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,848 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. [2018-09-20 15:27:25,848 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2018-09-20 15:27:25,927 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 [2018-09-20 15:27:25,932 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 [2018-09-20 15:27:25,932 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,959 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:27:25,994 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. [2018-09-20 15:27:25,994 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:32 [2018-09-20 15:28:12,808 WARN L178 SmtUtils]: Spent 4.83 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-20 15:29:04,051 WARN L178 SmtUtils]: Spent 4.29 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-20 15:29:07,868 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2018-09-20 15:29:07,870 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)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:732) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:338) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-09-20 15:29:07,880 INFO L168 Benchmark]: Toolchain (without parser) took 281442.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 302.0 MB). Free memory was 951.9 MB in the beginning and 1.0 GB in the end (delta: -53.4 MB). Peak memory consumption was 248.6 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:07,884 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:29:07,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.72 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 919.7 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:07,885 INFO L168 Benchmark]: Boogie Preprocessor took 246.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 919.7 MB in the beginning and 1.1 GB in the end (delta: -217.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:07,886 INFO L168 Benchmark]: RCFGBuilder took 28782.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:07,886 INFO L168 Benchmark]: TraceAbstraction took 251675.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 148.9 MB). Free memory was 999.9 MB in the beginning and 1.0 GB in the end (delta: -5.4 MB). Peak memory consumption was 143.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:07,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 730.72 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 919.7 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 246.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 919.7 MB in the beginning and 1.1 GB in the end (delta: -217.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 28782.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 251675.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 148.9 MB). Free memory was 999.9 MB in the beginning and 1.0 GB in the end (delta: -5.4 MB). Peak memory consumption was 143.5 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)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...