./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b865bb4da04412be07ba7e2426d2224bb04a2953 ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b865bb4da04412be07ba7e2426d2224bb04a2953 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 17:56:24,640 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:24,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:24,662 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:24,663 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:24,665 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:24,667 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:24,670 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:24,672 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:24,676 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:24,679 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:24,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:24,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:24,684 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:24,692 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:24,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:24,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:24,697 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:24,703 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:24,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:24,710 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:24,712 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:24,714 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:24,715 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:24,715 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:24,716 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:24,717 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:24,718 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:24,719 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:24,720 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:24,720 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:24,722 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:24,722 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:24,722 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:24,726 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:24,727 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:24,729 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:56:24,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:24,759 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:24,760 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:24,760 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:24,761 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:24,761 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:24,761 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:24,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:24,767 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:24,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:56:24,767 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:24,767 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:24,767 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:24,768 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:24,768 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:24,769 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:24,769 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:24,769 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:24,769 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:24,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:24,769 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:24,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:24,773 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:24,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:24,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:24,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:24,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:24,774 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:56:24,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:24,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:56:24,774 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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-11-28 17:56:24,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:24,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:24,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:24,833 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:24,834 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:24,835 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-28 17:56:24,898 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5653b84/67eb8d6fca26440ab2777548e466815f/FLAG3640c7906 [2018-11-28 17:56:25,365 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:25,366 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-28 17:56:25,375 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5653b84/67eb8d6fca26440ab2777548e466815f/FLAG3640c7906 [2018-11-28 17:56:25,724 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5653b84/67eb8d6fca26440ab2777548e466815f [2018-11-28 17:56:25,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:25,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:25,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:25,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:25,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:25,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:25" (1/1) ... [2018-11-28 17:56:25,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704b1397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:25, skipping insertion in model container [2018-11-28 17:56:25,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:25" (1/1) ... [2018-11-28 17:56:25,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:25,773 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:26,035 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:26,042 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:26,088 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:26,123 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:26,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26 WrapperNode [2018-11-28 17:56:26,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:26,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:26,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:26,125 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:26,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:26,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:26,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:26,164 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:26,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... [2018-11-28 17:56:26,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:26,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:26,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:26,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:26,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-28 17:56:26,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-28 17:56:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 17:56:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 17:56:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 17:56:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 17:56:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:26,940 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:26,941 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 17:56:26,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:26 BoogieIcfgContainer [2018-11-28 17:56:26,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:26,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:26,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:26,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:26,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:25" (1/3) ... [2018-11-28 17:56:26,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee0cade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:26, skipping insertion in model container [2018-11-28 17:56:26,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:26" (2/3) ... [2018-11-28 17:56:26,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee0cade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:26, skipping insertion in model container [2018-11-28 17:56:26,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:26" (3/3) ... [2018-11-28 17:56:26,951 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-11-28 17:56:26,962 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:26,970 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:26,988 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:27,021 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:27,022 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:27,022 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:27,023 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:27,024 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:27,024 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:27,024 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:27,024 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:27,025 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-28 17:56:27,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:27,053 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:27,054 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:27,057 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:27,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:27,063 INFO L82 PathProgramCache]: Analyzing trace with hash -248042727, now seen corresponding path program 1 times [2018-11-28 17:56:27,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:27,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:27,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:27,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:27,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:27,250 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-28 17:56:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:27,274 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-28 17:56:27,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:27,276 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-28 17:56:27,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:27,287 INFO L225 Difference]: With dead ends: 71 [2018-11-28 17:56:27,287 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:27,291 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 17:56:27,341 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-28 17:56:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:27,341 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 17:56:27,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 17:56:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 17:56:27,346 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:27,347 INFO L402 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] [2018-11-28 17:56:27,347 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:27,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:27,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1557048336, now seen corresponding path program 1 times [2018-11-28 17:56:27,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:27,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:27,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:27,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:27,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:27,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:27,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:27,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:27,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:27,517 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 17:56:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:27,618 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-28 17:56:27,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:27,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 17:56:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:27,622 INFO L225 Difference]: With dead ends: 51 [2018-11-28 17:56:27,623 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 17:56:27,624 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 17:56:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 17:56:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 17:56:27,635 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-28 17:56:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:27,635 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 17:56:27,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 17:56:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 17:56:27,637 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:27,637 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:27,637 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:27,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:27,638 INFO L82 PathProgramCache]: Analyzing trace with hash 589129728, now seen corresponding path program 1 times [2018-11-28 17:56:27,638 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:27,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:27,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:27,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:27,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:27,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:27,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:27,761 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 17:56:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:27,833 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-28 17:56:27,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:27,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 17:56:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:27,835 INFO L225 Difference]: With dead ends: 55 [2018-11-28 17:56:27,836 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 17:56:27,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 17:56:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-28 17:56:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 17:56:27,848 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-28 17:56:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:27,849 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 17:56:27,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 17:56:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 17:56:27,851 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:27,851 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:27,851 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:27,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2096681537, now seen corresponding path program 1 times [2018-11-28 17:56:27,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:27,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:27,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:27,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:27,967 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:56:28,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:56:28 BoogieIcfgContainer [2018-11-28 17:56:28,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:56:28,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:56:28,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:56:28,005 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:56:28,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:26" (3/4) ... [2018-11-28 17:56:28,010 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:56:28,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:56:28,011 INFO L168 Benchmark]: Toolchain (without parser) took 2282.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -100.3 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:28,013 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:28,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.97 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:28,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.54 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:28,016 INFO L168 Benchmark]: Boogie Preprocessor took 44.45 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:28,017 INFO L168 Benchmark]: RCFGBuilder took 732.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:28,018 INFO L168 Benchmark]: TraceAbstraction took 1061.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:28,019 INFO L168 Benchmark]: Witness Printer took 6.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:28,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 392.97 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.54 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.45 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 732.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1061.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. * Witness Printer took 6.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967303, \old(y)=4294967304] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967303] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967303, x=4294967303] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; VAL [\old(x)=4294967303, \result=0, lsw=4294967297, msw=4293918721, x=4294967303] [L45] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967303, \old(y)=4294967304, __fpclassify_double(x)=0, x=4294967303, y=4294967304] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; VAL [\old(x)=4294967303, \old(y)=4294967304, \result=4294967304, x=4294967303, y=4294967304] [L63] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967304, x=4294967303, y=4294967304] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967304] [L16] return x != x; VAL [\old(x)=4294967304, \result=0, x=4294967304] [L65] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967304, x=4294967303, y=4294967304] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4294967304, x=4294967303, y=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 17:56:30,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:30,492 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:30,516 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:30,516 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:30,521 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:30,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:30,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:30,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:30,537 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:30,538 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:30,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:30,543 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:30,544 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:30,545 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:30,548 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:30,549 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:30,553 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:30,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:30,560 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:30,563 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:30,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:30,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:30,566 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:30,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:30,568 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:30,568 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:30,569 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:30,570 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:30,571 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:30,571 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:30,572 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:30,572 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:30,572 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:30,575 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:30,576 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:30,576 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:56:30,600 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:30,601 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:30,602 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:30,602 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:30,604 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:30,604 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:30,604 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:30,605 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:30,605 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:30,605 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:30,605 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:30,605 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:30,606 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:30,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:30,609 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:56:30,609 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:56:30,610 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:30,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:30,610 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:30,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:30,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:30,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:30,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:30,613 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:30,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:30,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:30,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:30,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:30,614 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:56:30,614 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:30,615 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:56:30,615 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:56:30,615 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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-11-28 17:56:30,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:30,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:30,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:30,680 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:30,680 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:30,681 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-28 17:56:30,747 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2779b671e/1bcdcf1338804edeb3e3c7780530a3e7/FLAGd90f270b8 [2018-11-28 17:56:31,181 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:31,182 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-11-28 17:56:31,190 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2779b671e/1bcdcf1338804edeb3e3c7780530a3e7/FLAGd90f270b8 [2018-11-28 17:56:31,526 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2779b671e/1bcdcf1338804edeb3e3c7780530a3e7 [2018-11-28 17:56:31,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:31,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:31,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:31,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:31,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:31,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185b3733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31, skipping insertion in model container [2018-11-28 17:56:31,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:31,570 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:31,786 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:31,795 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:31,835 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:31,867 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:31,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31 WrapperNode [2018-11-28 17:56:31,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:31,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:31,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:31,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:31,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:31,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:31,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:31,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:31,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... [2018-11-28 17:56:31,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:31,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:31,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:31,938 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:31,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:32,056 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-28 17:56:32,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-28 17:56:32,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 17:56:32,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 17:56:32,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:32,058 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 17:56:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 17:56:32,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:32,278 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:56:32,607 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:32,607 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 17:56:32,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:32 BoogieIcfgContainer [2018-11-28 17:56:32,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:32,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:32,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:32,613 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:32,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:31" (1/3) ... [2018-11-28 17:56:32,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6253e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:32, skipping insertion in model container [2018-11-28 17:56:32,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:31" (2/3) ... [2018-11-28 17:56:32,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6253e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:32, skipping insertion in model container [2018-11-28 17:56:32,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:32" (3/3) ... [2018-11-28 17:56:32,618 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-11-28 17:56:32,630 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:32,639 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:32,659 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:32,697 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:32,699 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:32,699 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:32,699 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:32,700 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:32,700 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:32,700 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:32,700 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:32,700 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-28 17:56:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 17:56:32,731 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:32,732 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:32,735 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:32,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:32,742 INFO L82 PathProgramCache]: Analyzing trace with hash 294947040, now seen corresponding path program 1 times [2018-11-28 17:56:32,747 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:32,747 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:32,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:32,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:32,878 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:32,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:32,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:32,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:32,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:32,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:32,912 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-28 17:56:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:32,937 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-28 17:56:32,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:32,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-28 17:56:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:32,949 INFO L225 Difference]: With dead ends: 65 [2018-11-28 17:56:32,950 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:56:32,956 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:56:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:56:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-28 17:56:33,016 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-28 17:56:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:33,017 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-28 17:56:33,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-28 17:56:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 17:56:33,020 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:33,020 INFO L402 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] [2018-11-28 17:56:33,020 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:33,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash 321884391, now seen corresponding path program 1 times [2018-11-28 17:56:33,021 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:33,021 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 [2018-11-28 17:56:33,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:33,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:33,177 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:33,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:33,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:33,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:33,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:33,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:33,192 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-28 17:56:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:33,290 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-28 17:56:33,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:33,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 17:56:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:33,296 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:33,296 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:33,297 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:33,310 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-28 17:56:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:33,311 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:33,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:33,314 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:33,314 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:33,314 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:33,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:33,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2098210685, now seen corresponding path program 1 times [2018-11-28 17:56:33,315 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:33,315 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 17:56:33,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:33,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:33,485 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:33,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:33,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:33,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:33,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:33,503 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 17:56:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:33,563 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 17:56:33,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:33,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 17:56:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:33,565 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:33,566 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:33,567 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:33,575 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-28 17:56:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:33,576 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:33,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 17:56:33,578 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:33,579 INFO L402 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] [2018-11-28 17:56:33,579 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:33,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash -985358741, now seen corresponding path program 1 times [2018-11-28 17:56:33,581 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:33,581 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) [2018-11-28 17:56:33,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:33,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:33,814 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:33,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:33,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:33,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:33,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:33,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:33,830 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 17:56:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:33,981 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 17:56:33,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:33,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 17:56:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:33,987 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:33,988 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:33,989 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:34,003 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-28 17:56:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:34,003 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:34,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 17:56:34,007 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:34,007 INFO L402 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] [2018-11-28 17:56:34,008 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:34,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:34,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2020298873, now seen corresponding path program 1 times [2018-11-28 17:56:34,011 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:34,011 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:34,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:34,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:34,152 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:34,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:34,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:34,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:34,171 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 17:56:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:34,238 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 17:56:34,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:34,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-28 17:56:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:34,241 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:34,241 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:34,242 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:34,257 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-28 17:56:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:34,258 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:34,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 17:56:34,259 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:34,259 INFO L402 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] [2018-11-28 17:56:34,259 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:34,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:34,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1981265416, now seen corresponding path program 1 times [2018-11-28 17:56:34,262 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:34,262 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:34,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:34,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:34,617 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:34,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:34,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 17:56:34,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 17:56:34,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 17:56:34,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 17:56:34,632 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-28 17:56:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:35,290 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-28 17:56:35,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 17:56:35,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-28 17:56:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:35,293 INFO L225 Difference]: With dead ends: 43 [2018-11-28 17:56:35,293 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:35,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 17:56:35,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-28 17:56:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-28 17:56:35,300 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-28 17:56:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:35,301 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-28 17:56:35,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 17:56:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-28 17:56:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 17:56:35,302 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:35,302 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:35,303 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:35,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash 225868180, now seen corresponding path program 1 times [2018-11-28 17:56:35,303 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:35,303 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 [2018-11-28 17:56:35,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:35,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 17:56:35,586 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:35,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:35,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:35,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:35,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:35,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:35,607 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-28 17:56:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:35,748 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-28 17:56:35,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:35,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-28 17:56:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:35,750 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:35,751 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:35,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 17:56:35,757 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-28 17:56:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:35,758 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 17:56:35,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 17:56:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 17:56:35,759 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:35,760 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:35,760 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:35,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:35,760 INFO L82 PathProgramCache]: Analyzing trace with hash -924592112, now seen corresponding path program 1 times [2018-11-28 17:56:35,761 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:35,761 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:35,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:35,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 17:56:35,956 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:35,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:35,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:35,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:35,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:35,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:35,972 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 17:56:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:36,024 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-28 17:56:36,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:36,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-28 17:56:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:36,026 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:36,026 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:36,027 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 17:56:36,033 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-28 17:56:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:36,034 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 17:56:36,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 17:56:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 17:56:36,035 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:36,035 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:36,035 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:36,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1139309745, now seen corresponding path program 1 times [2018-11-28 17:56:36,036 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:36,036 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:36,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:36,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:36,298 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:36,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:36,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 17:56:36,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 17:56:36,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 17:56:36,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 17:56:36,310 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2018-11-28 17:56:36,610 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-28 17:56:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:36,852 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-11-28 17:56:36,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 17:56:36,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 17:56:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:36,854 INFO L225 Difference]: With dead ends: 47 [2018-11-28 17:56:36,854 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:36,855 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 17:56:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-28 17:56:36,861 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-28 17:56:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:36,861 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-28 17:56:36,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 17:56:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-28 17:56:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 17:56:36,863 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:36,863 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:36,863 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:36,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash -438245167, now seen corresponding path program 1 times [2018-11-28 17:56:36,864 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:36,864 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:36,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:36,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:37,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:37,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:37,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-28 17:56:37,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 17:56:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 17:56:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-28 17:56:37,263 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 10 states. [2018-11-28 17:56:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:37,804 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-11-28 17:56:37,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 17:56:37,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-28 17:56:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:37,807 INFO L225 Difference]: With dead ends: 43 [2018-11-28 17:56:37,807 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:56:37,808 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-28 17:56:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:56:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:56:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 17:56:37,814 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 17:56:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:37,814 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 17:56:37,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 17:56:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 17:56:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 17:56:37,816 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:37,816 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:37,816 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:37,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:37,817 INFO L82 PathProgramCache]: Analyzing trace with hash 892232472, now seen corresponding path program 1 times [2018-11-28 17:56:37,817 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:37,817 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:37,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:37,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 17:56:37,947 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:37,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:37,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:37,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:37,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:37,961 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 17:56:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:37,998 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 17:56:37,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:37,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-28 17:56:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,001 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:38,001 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 17:56:38,001 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 17:56:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 17:56:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 17:56:38,007 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 17:56:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:38,007 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 17:56:38,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 17:56:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 17:56:38,008 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,009 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:38,009 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash 205607700, now seen corresponding path program 1 times [2018-11-28 17:56:38,009 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:38,010 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:38,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 17:56:38,137 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:38,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:38,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,152 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 17:56:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:38,199 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 17:56:38,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:38,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 17:56:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,201 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:38,201 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 17:56:38,201 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 17:56:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 17:56:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 17:56:38,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-28 17:56:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:38,207 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 17:56:38,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 17:56:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 17:56:38,209 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,209 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:38,209 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,209 INFO L82 PathProgramCache]: Analyzing trace with hash -87795307, now seen corresponding path program 1 times [2018-11-28 17:56:38,210 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:38,210 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:38,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:38,520 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:38,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 17:56:38,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 17:56:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 17:56:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 17:56:38,531 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-28 17:56:39,018 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-28 17:56:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:39,146 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 17:56:39,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 17:56:39,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-28 17:56:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:39,146 INFO L225 Difference]: With dead ends: 33 [2018-11-28 17:56:39,147 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 17:56:39,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 17:56:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 17:56:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 17:56:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 17:56:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 17:56:39,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 17:56:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:39,150 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 17:56:39,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 17:56:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 17:56:39,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 17:56:39,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 17:56:39,486 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-11-28 17:56:39,486 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-11-28 17:56:39,486 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-11-28 17:56:39,486 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-11-28 17:56:39,486 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-11-28 17:56:39,498 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-11-28 17:56:39,498 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-11-28 17:56:39,498 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-11-28 17:56:39,499 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-11-28 17:56:39,499 INFO L451 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: true [2018-11-28 17:56:39,500 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2018-11-28 17:56:39,500 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-11-28 17:56:39,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:56:39,500 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:56:39,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:56:39,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:56:39,500 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 17:56:39,500 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:56:39,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:56:39,510 INFO L444 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-11-28 17:56:39,510 INFO L448 ceAbstractionStarter]: For program point L65-1(lines 65 68) no Hoare annotation was computed. [2018-11-28 17:56:39,510 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L444 ceAbstractionStarter]: At program point L63(line 63) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point L63-1(line 63) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 53 71) the Hoare annotation is: true [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 53 71) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 53 71) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-11-28 17:56:39,512 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-28 17:56:39,513 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-11-28 17:56:39,514 INFO L444 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-28 17:56:39,515 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-11-28 17:56:39,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:56:39 BoogieIcfgContainer [2018-11-28 17:56:39,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:56:39,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:56:39,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:56:39,525 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:56:39,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:32" (3/4) ... [2018-11-28 17:56:39,529 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 17:56:39,535 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-28 17:56:39,535 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-28 17:56:39,535 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 17:56:39,536 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 17:56:39,536 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-11-28 17:56:39,542 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-28 17:56:39,542 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 17:56:39,542 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 17:56:39,599 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:56:39,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:56:39,606 INFO L168 Benchmark]: Toolchain (without parser) took 8075.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -241.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,607 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.05 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,608 INFO L168 Benchmark]: Boogie Preprocessor took 37.55 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,609 INFO L168 Benchmark]: RCFGBuilder took 670.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,609 INFO L168 Benchmark]: TraceAbstraction took 6914.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -81.8 MB). Peak memory consumption was 301.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,610 INFO L168 Benchmark]: Witness Printer took 77.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-28 17:56:39,614 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.05 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.55 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 670.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6914.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -81.8 MB). Peak memory consumption was 301.5 MB. Max. memory is 11.5 GB. * Witness Printer took 77.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 6.8s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 497 SDtfs, 31 SDslu, 1314 SDs, 0 SdLazy, 218 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21339 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...