./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1252a_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_1252a_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 b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 .................................................................................................................................................................................................................................................................................................................................................................................... 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_1252a_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 b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 17:56:43,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:43,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:43,543 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:43,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:43,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:43,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:43,553 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:43,555 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:43,556 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:43,557 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:43,557 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:43,558 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:43,559 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:43,561 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:43,562 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:43,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:43,565 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:43,567 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:43,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:43,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:43,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:43,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:43,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:43,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:43,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:43,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:43,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:43,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:43,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:43,582 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:43,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:43,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:43,583 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:43,584 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:43,585 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:43,586 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:56:43,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:43,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:43,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:43,603 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:43,604 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:43,604 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:43,604 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:43,605 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:43,606 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:43,606 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:56:43,606 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:43,606 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:43,606 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:43,607 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:43,607 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:43,607 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:43,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:43,607 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:43,609 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:43,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:43,609 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:43,609 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:43,610 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:43,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:43,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:43,610 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:43,610 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:43,612 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:56:43,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:43,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:56:43,612 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 -> b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 [2018-11-28 17:56:43,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:43,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:43,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:43,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:43,698 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:43,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-11-28 17:56:43,786 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf8706901/cfcafb30c4ef489da7a354f2b8db01b6/FLAGac432d3b2 [2018-11-28 17:56:44,302 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:44,303 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-11-28 17:56:44,314 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf8706901/cfcafb30c4ef489da7a354f2b8db01b6/FLAGac432d3b2 [2018-11-28 17:56:44,625 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf8706901/cfcafb30c4ef489da7a354f2b8db01b6 [2018-11-28 17:56:44,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:44,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:44,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:44,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:44,635 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:44,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:44" (1/1) ... [2018-11-28 17:56:44,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfdad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:44, skipping insertion in model container [2018-11-28 17:56:44,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:44" (1/1) ... [2018-11-28 17:56:44,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:44,674 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:44,923 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:44,932 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:44,979 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:45,007 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:45,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45 WrapperNode [2018-11-28 17:56:45,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:45,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:45,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:45,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:45,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:45,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:45,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:45,037 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:45,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (1/1) ... [2018-11-28 17:56:45,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:45,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:45,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:45,074 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:45,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (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 17:56:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 17:56:45,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 17:56:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:45,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-28 17:56:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-28 17:56:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 17:56:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 17:56:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:45,783 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:45,784 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 17:56:45,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:45 BoogieIcfgContainer [2018-11-28 17:56:45,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:45,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:45,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:45,789 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:45,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:44" (1/3) ... [2018-11-28 17:56:45,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42490e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:45, skipping insertion in model container [2018-11-28 17:56:45,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:45" (2/3) ... [2018-11-28 17:56:45,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42490e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:45, skipping insertion in model container [2018-11-28 17:56:45,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:45" (3/3) ... [2018-11-28 17:56:45,793 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-11-28 17:56:45,804 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:45,812 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:45,831 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:45,867 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:45,868 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:45,868 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:45,868 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:45,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:45,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:45,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:45,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:45,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 17:56:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 17:56:45,896 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:45,897 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] [2018-11-28 17:56:45,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:45,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1757694217, now seen corresponding path program 1 times [2018-11-28 17:56:45,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:45,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:45,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:45,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:45,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:46,049 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 17:56:46,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:46,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:46,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:46,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:46,076 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 17:56:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:46,106 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 17:56:46,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:46,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 17:56:46,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:46,121 INFO L225 Difference]: With dead ends: 79 [2018-11-28 17:56:46,121 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 17:56:46,126 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 17:56:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 17:56:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 17:56:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 17:56:46,185 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 17:56:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:46,186 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 17:56:46,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 17:56:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 17:56:46,190 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:46,191 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] [2018-11-28 17:56:46,191 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:46,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1795675250, now seen corresponding path program 1 times [2018-11-28 17:56:46,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:46,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:46,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:46,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:46,476 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 17:56:46,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:46,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:46,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:46,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:46,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:46,481 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 17:56:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:46,537 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 17:56:46,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:46,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 17:56:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:46,542 INFO L225 Difference]: With dead ends: 59 [2018-11-28 17:56:46,543 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 17:56:46,544 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:56:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 17:56:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 17:56:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 17:56:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 17:56:46,556 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 17:56:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:46,557 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 17:56:46,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 17:56:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:46,560 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:46,560 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 17:56:46,560 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:46,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:46,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2106279408, now seen corresponding path program 1 times [2018-11-28 17:56:46,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:46,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:46,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:46,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:46,717 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 17:56:46,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:46,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:46,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:46,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:46,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:46,719 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 17:56:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:46,809 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 17:56:46,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:46,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 17:56:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:46,811 INFO L225 Difference]: With dead ends: 63 [2018-11-28 17:56:46,811 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 17:56:46,814 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 17:56:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 17:56:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 17:56:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 17:56:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 17:56:46,832 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 17:56:46,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:46,832 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 17:56:46,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 17:56:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:46,833 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:46,834 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 17:56:46,834 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:46,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash 309328049, now seen corresponding path program 1 times [2018-11-28 17:56:46,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:46,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:46,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:46,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:46,945 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:56:46,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:56:46 BoogieIcfgContainer [2018-11-28 17:56:46,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:56:46,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:56:46,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:56:46,987 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:56:46,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:45" (3/4) ... [2018-11-28 17:56:46,992 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:56:46,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:56:46,993 INFO L168 Benchmark]: Toolchain (without parser) took 2363.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -112.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:46,995 INFO L168 Benchmark]: CDTParser took 0.61 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 17:56:46,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.52 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 17:56:46,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:46,997 INFO L168 Benchmark]: Boogie Preprocessor took 37.05 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 17:56:46,998 INFO L168 Benchmark]: RCFGBuilder took 710.55 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: -175.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:46,999 INFO L168 Benchmark]: TraceAbstraction took 1200.64 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: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:47,000 INFO L168 Benchmark]: Witness Printer took 5.20 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 17:56:47,005 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 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 377.52 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 27.15 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.05 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. * RCFGBuilder took 710.55 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: -175.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1200.64 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: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.20 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: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4293918726, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918726] [L24] __uint32_t msw, lsw; VAL [\old(x)=4293918726, x=4293918726] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918726, lsw=1, msw=4293918721, x=4293918726] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918726, lsw=1, msw=4293918721, x=4293918726] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918726, lsw=1, msw=4293918721, x=4293918726] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=4293918726, \result=0, lsw=1, msw=4293918721, x=4293918726] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918726, \old(y)=0, __fpclassify_double(x)=0, x=4293918726, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=4293918726, \old(y)=0, \result=0, x=4293918726, y=0] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4293918726, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4293918726, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4293918726, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 0.3s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 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 17:56:49,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:49,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:49,538 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:49,539 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:49,541 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:49,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:49,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:49,549 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:49,551 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:49,554 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:49,555 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:49,556 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:49,557 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:49,560 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:49,561 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:49,562 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:49,571 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:49,575 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:49,580 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:49,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:49,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:49,585 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:49,585 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:49,585 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:49,586 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:49,587 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:49,588 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:49,589 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:49,594 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:49,594 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:49,595 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:49,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:49,595 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:49,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:49,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:49,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:56:49,629 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:49,629 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:49,630 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:49,630 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:49,631 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:49,631 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:49,631 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:49,631 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:49,631 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:49,632 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:49,633 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:49,633 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:49,633 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:49,633 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:49,633 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:56:49,634 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:56:49,634 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:49,634 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:49,635 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:49,635 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:49,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:49,635 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:49,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:49,635 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:49,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:49,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:49,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:49,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:49,636 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:56:49,636 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:49,638 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:56:49,638 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:56:49,638 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 -> b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 [2018-11-28 17:56:49,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:49,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:49,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:49,704 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:49,705 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:49,706 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-11-28 17:56:49,774 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1777a7344/725548943d174aa09ea32ac65c0e1aa8/FLAG763ce602b [2018-11-28 17:56:50,178 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:50,179 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-11-28 17:56:50,187 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1777a7344/725548943d174aa09ea32ac65c0e1aa8/FLAG763ce602b [2018-11-28 17:56:50,550 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1777a7344/725548943d174aa09ea32ac65c0e1aa8 [2018-11-28 17:56:50,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:50,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:50,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:50,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:50,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:50,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:50,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbcf29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50, skipping insertion in model container [2018-11-28 17:56:50,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:50,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:50,596 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:50,881 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:50,897 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:50,935 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:50,969 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:50,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50 WrapperNode [2018-11-28 17:56:50,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:50,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:50,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:50,971 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:50,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:50,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:51,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:51,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:51,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:51,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (1/1) ... [2018-11-28 17:56:51,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:51,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:51,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:51,118 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:51,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (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 17:56:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 17:56:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 17:56:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 17:56:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:51,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:51,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:51,184 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-28 17:56:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-28 17:56:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 17:56:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:51,430 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:56:51,748 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:56:51,828 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:51,829 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 17:56:51,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:51 BoogieIcfgContainer [2018-11-28 17:56:51,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:51,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:51,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:51,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:51,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:50" (1/3) ... [2018-11-28 17:56:51,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6936902e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:51, skipping insertion in model container [2018-11-28 17:56:51,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:50" (2/3) ... [2018-11-28 17:56:51,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6936902e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:51, skipping insertion in model container [2018-11-28 17:56:51,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:51" (3/3) ... [2018-11-28 17:56:51,840 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-11-28 17:56:51,852 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:51,860 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:51,880 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:51,916 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:51,917 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:51,918 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:51,918 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:51,918 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:51,918 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:51,918 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:51,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:51,919 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 17:56:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 17:56:51,947 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:51,948 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] [2018-11-28 17:56:51,951 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:51,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:51,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1896135752, now seen corresponding path program 1 times [2018-11-28 17:56:51,963 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:51,964 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 17:56:51,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:52,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:52,071 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 17:56:52,071 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:52,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:52,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:52,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:52,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:52,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:52,107 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 17:56:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:52,134 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 17:56:52,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:52,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 17:56:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:52,148 INFO L225 Difference]: With dead ends: 75 [2018-11-28 17:56:52,148 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 17:56:52,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 17:56:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 17:56:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 17:56:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 17:56:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 17:56:52,200 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 17:56:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:52,201 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 17:56:52,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 17:56:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 17:56:52,203 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:52,203 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] [2018-11-28 17:56:52,204 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:52,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:52,204 INFO L82 PathProgramCache]: Analyzing trace with hash -944725945, now seen corresponding path program 1 times [2018-11-28 17:56:52,205 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:52,206 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 17:56:52,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:52,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:52,378 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 17:56:52,379 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:52,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:52,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:52,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:52,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:52,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:52,399 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 17:56:52,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:52,492 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 17:56:52,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:52,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 17:56:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:52,498 INFO L225 Difference]: With dead ends: 56 [2018-11-28 17:56:52,498 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 17:56:52,500 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 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 17:56:52,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 17:56:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 17:56:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 17:56:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 17:56:52,512 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 17:56:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:52,512 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 17:56:52,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 17:56:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 17:56:52,514 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:52,515 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] [2018-11-28 17:56:52,515 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:52,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:52,515 INFO L82 PathProgramCache]: Analyzing trace with hash -190309307, now seen corresponding path program 1 times [2018-11-28 17:56:52,517 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:52,517 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 17:56:52,526 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 17:56:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:52,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:53,239 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 17:56:53,239 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:53,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:53,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:53,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:53,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:53,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:53,255 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 17:56:54,087 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-28 17:56:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:54,872 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-28 17:56:54,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:54,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 17:56:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:54,876 INFO L225 Difference]: With dead ends: 63 [2018-11-28 17:56:54,876 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 17:56:54,877 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:56:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 17:56:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 17:56:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 17:56:54,887 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-28 17:56:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:54,887 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 17:56:54,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 17:56:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 17:56:54,890 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:54,890 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 17:56:54,891 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:54,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:54,891 INFO L82 PathProgramCache]: Analyzing trace with hash 935715971, now seen corresponding path program 1 times [2018-11-28 17:56:54,892 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:54,892 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 17:56:54,905 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 17:56:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:54,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:54,982 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 17:56:54,982 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:54,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:54,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:54,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:54,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:54,999 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-28 17:56:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:55,081 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-28 17:56:55,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:55,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-28 17:56:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:55,085 INFO L225 Difference]: With dead ends: 61 [2018-11-28 17:56:55,085 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 17:56:55,086 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 17:56:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 17:56:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-28 17:56:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 17:56:55,114 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-28 17:56:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:55,114 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 17:56:55,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 17:56:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 17:56:55,117 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:55,117 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 17:56:55,117 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:55,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:55,120 INFO L82 PathProgramCache]: Analyzing trace with hash 696707201, now seen corresponding path program 1 times [2018-11-28 17:56:55,121 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:55,121 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 17:56:55,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:55,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:56:55,626 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:55,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:55,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:55,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:55,641 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-28 17:56:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:58,407 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 17:56:58,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:58,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 17:56:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:58,410 INFO L225 Difference]: With dead ends: 62 [2018-11-28 17:56:58,411 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 17:56:58,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:56:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 17:56:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-28 17:56:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 17:56:58,419 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-28 17:56:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:58,419 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 17:56:58,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 17:56:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 17:56:58,422 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:58,422 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] [2018-11-28 17:56:58,422 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:58,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:58,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1230715632, now seen corresponding path program 1 times [2018-11-28 17:56:58,424 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:58,425 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 17:56:58,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:58,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:58,587 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 17:56:58,588 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:58,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:58,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:58,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:58,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:58,604 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 17:56:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:58,651 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-28 17:56:58,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:58,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 17:56:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:58,653 INFO L225 Difference]: With dead ends: 58 [2018-11-28 17:56:58,654 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 17:56:58,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 17:56:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 17:56:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 17:56:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-28 17:56:58,662 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-28 17:56:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:58,663 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-28 17:56:58,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-28 17:56:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 17:56:58,664 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:58,664 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] [2018-11-28 17:56:58,665 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:58,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1937025982, now seen corresponding path program 1 times [2018-11-28 17:56:58,665 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:58,666 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 17:56:58,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:58,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 17:56:59,064 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:59,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:59,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:59,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:59,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:59,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:59,076 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-28 17:57:00,501 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-28 17:57:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:57:00,566 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-28 17:57:00,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:57:00,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 17:57:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:57:00,571 INFO L225 Difference]: With dead ends: 63 [2018-11-28 17:57:00,571 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 17:57:00,572 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:57:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 17:57:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 17:57:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:57:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-28 17:57:00,579 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-28 17:57:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:57:00,579 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-28 17:57:00,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:57:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-28 17:57:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:57:00,581 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:57:00,581 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] [2018-11-28 17:57:00,581 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:57:00,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:57:00,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1151102924, now seen corresponding path program 1 times [2018-11-28 17:57:00,582 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:57:00,582 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 17:57:00,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:57:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:57:00,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:57:00,704 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 17:57:00,704 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:57:00,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:57:00,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:57:00,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:57:00,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:57:00,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:57:00,716 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-28 17:57:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:57:00,786 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-28 17:57:00,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:57:00,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-28 17:57:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:57:00,788 INFO L225 Difference]: With dead ends: 59 [2018-11-28 17:57:00,788 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 17:57:00,789 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 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 17:57:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 17:57:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-28 17:57:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 17:57:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-28 17:57:00,795 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-11-28 17:57:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:57:00,795 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-28 17:57:00,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:57:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-28 17:57:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:57:00,796 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:57:00,796 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] [2018-11-28 17:57:00,797 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:57:00,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:57:00,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1413761077, now seen corresponding path program 1 times [2018-11-28 17:57:00,797 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:57:00,797 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 17:57:00,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:57:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:57:00,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:57:01,088 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-28 17:57:01,138 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 17:57:01,138 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:57:01,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:57:01,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 17:57:01,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 17:57:01,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 17:57:01,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 17:57:01,159 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-11-28 17:57:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:57:01,373 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-11-28 17:57:01,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 17:57:01,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 17:57:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:57:01,378 INFO L225 Difference]: With dead ends: 57 [2018-11-28 17:57:01,379 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 17:57:01,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 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 17:57:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 17:57:01,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 17:57:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 17:57:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-28 17:57:01,386 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-11-28 17:57:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:57:01,386 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-28 17:57:01,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 17:57:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-28 17:57:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:57:01,389 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:57:01,389 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] [2018-11-28 17:57:01,389 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:57:01,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:57:01,389 INFO L82 PathProgramCache]: Analyzing trace with hash 604414451, now seen corresponding path program 1 times [2018-11-28 17:57:01,399 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:57:01,399 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 17:57:01,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:57:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:57:01,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:57:01,636 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 17:57:01,636 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:57:01,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:57:01,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:57:01,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:57:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:57:01,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:57:01,649 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-11-28 17:57:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:57:02,092 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-11-28 17:57:02,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:57:02,093 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 17:57:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:57:02,096 INFO L225 Difference]: With dead ends: 48 [2018-11-28 17:57:02,096 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 17:57:02,097 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 17:57:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 17:57:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 17:57:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 17:57:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-28 17:57:02,103 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-28 17:57:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:57:02,105 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-28 17:57:02,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:57:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-28 17:57:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 17:57:02,107 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:57:02,107 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] [2018-11-28 17:57:02,107 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:57:02,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:57:02,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1607764478, now seen corresponding path program 1 times [2018-11-28 17:57:02,109 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:57:02,109 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 17:57:02,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:57:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:57:02,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:57:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 17:57:02,556 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:57:02,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:57:02,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:57:02,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:57:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:57:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:57:02,569 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-28 17:57:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:57:03,550 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-28 17:57:03,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:57:03,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-28 17:57:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:57:03,553 INFO L225 Difference]: With dead ends: 62 [2018-11-28 17:57:03,553 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 17:57:03,553 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:57:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 17:57:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 17:57:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 17:57:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-28 17:57:03,562 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-28 17:57:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:57:03,564 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-28 17:57:03,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:57:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-28 17:57:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 17:57:03,566 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:57:03,566 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, 1, 1, 1, 1, 1] [2018-11-28 17:57:03,566 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:57:03,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:57:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash -329247760, now seen corresponding path program 1 times [2018-11-28 17:57:03,567 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:57:03,567 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 17:57:03,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:57:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:57:03,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:57:04,104 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 17:57:04,105 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:57:04,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:57:04,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-28 17:57:04,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 17:57:04,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 17:57:04,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-28 17:57:04,117 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-11-28 17:57:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:57:05,449 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-28 17:57:05,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 17:57:05,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-28 17:57:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:57:05,452 INFO L225 Difference]: With dead ends: 37 [2018-11-28 17:57:05,452 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 17:57:05,453 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-11-28 17:57:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 17:57:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 17:57:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 17:57:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 17:57:05,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-28 17:57:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:57:05,454 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 17:57:05,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 17:57:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 17:57:05,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 17:57:05,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 17:57:05,911 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2018-11-28 17:57:05,919 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 23 48) no Hoare annotation was computed. [2018-11-28 17:57:05,920 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 23 48) the Hoare annotation is: true [2018-11-28 17:57:05,920 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 47) no Hoare annotation was computed. [2018-11-28 17:57:05,920 INFO L448 ceAbstractionStarter]: For program point L26-1(lines 26 31) no Hoare annotation was computed. [2018-11-28 17:57:05,920 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 26 31) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point L26-3(lines 23 48) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 23 48) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 47) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 47) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L448 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2018-11-28 17:57:05,921 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 50 58) the Hoare annotation is: true [2018-11-28 17:57:05,922 INFO L448 ceAbstractionStarter]: For program point L57-2(line 57) no Hoare annotation was computed. [2018-11-28 17:57:05,924 INFO L444 ceAbstractionStarter]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= fmax_double_~x |fmax_double_#in~x|))) (or (and .cse0 (= fmax_double_~y |fmax_double_#in~y|)) (and (or (exists ((v_prenex_11 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_11) (_ bv2148532223 32))) (= (fp ((_ extract 63 63) v_prenex_11) ((_ extract 62 52) v_prenex_11) ((_ extract 51 0) v_prenex_11)) |fmax_double_#in~x|))) (exists ((v_prenex_10 (_ BitVec 64))) (and (not (bvuge ((_ extract 63 32) v_prenex_10) (_ bv2147483648 32))) (= |fmax_double_#in~x| (fp ((_ extract 63 63) v_prenex_10) ((_ extract 62 52) v_prenex_10) ((_ extract 51 0) v_prenex_10)))))) .cse0))) [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point L54-1(lines 54 55) no Hoare annotation was computed. [2018-11-28 17:57:05,925 INFO L444 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point L52-1(lines 52 53) no Hoare annotation was computed. [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 50 58) no Hoare annotation was computed. [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 50 58) no Hoare annotation was computed. [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2018-11-28 17:57:05,925 INFO L444 ceAbstractionStarter]: At program point L63-2(lines 63 67) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2018-11-28 17:57:05,925 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 60 70) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 60 70) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 60 70) the Hoare annotation is: true [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 17:57:05,926 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 72 90) the Hoare annotation is: true [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 72 90) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-11-28 17:57:05,926 INFO L448 ceAbstractionStarter]: For program point L84(line 84) no Hoare annotation was computed. [2018-11-28 17:57:05,927 INFO L444 ceAbstractionStarter]: At program point L84-1(line 84) the Hoare annotation is: (and (= (_ +zero 11 53) main_~res~0) |main_#t~short11| (= (_ +zero 11 53) main_~y~0) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-11-28 17:57:05,927 INFO L448 ceAbstractionStarter]: For program point L84-2(line 84) no Hoare annotation was computed. [2018-11-28 17:57:05,927 INFO L444 ceAbstractionStarter]: At program point L81(line 81) the Hoare annotation is: (and (= (_ +zero 11 53) main_~y~0) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-11-28 17:57:05,927 INFO L448 ceAbstractionStarter]: For program point L81-1(line 81) no Hoare annotation was computed. [2018-11-28 17:57:05,927 INFO L448 ceAbstractionStarter]: For program point L84-4(lines 84 87) no Hoare annotation was computed. [2018-11-28 17:57:05,927 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 72 90) no Hoare annotation was computed. [2018-11-28 17:57:05,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:57:05 BoogieIcfgContainer [2018-11-28 17:57:05,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:57:05,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:57:05,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:57:05,944 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:57:05,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:51" (3/4) ... [2018-11-28 17:57:05,951 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 17:57:05,968 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-28 17:57:05,968 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 17:57:05,968 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-11-28 17:57:05,968 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-11-28 17:57:05,969 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 17:57:05,978 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-11-28 17:57:05,980 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 17:57:05,981 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 17:57:06,020 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 17:57:06,021 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 17:57:06,076 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:57:06,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:57:06,077 INFO L168 Benchmark]: Toolchain (without parser) took 15523.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -124.6 MB). Peak memory consumption was 72.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:06,079 INFO L168 Benchmark]: CDTParser took 0.18 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 17:57:06,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.69 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 17:57:06,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.24 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 17:57:06,080 INFO L168 Benchmark]: Boogie Preprocessor took 113.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:06,082 INFO L168 Benchmark]: RCFGBuilder took 711.21 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:06,083 INFO L168 Benchmark]: TraceAbstraction took 14112.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.0 MB). Peak memory consumption was 95.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:06,085 INFO L168 Benchmark]: Witness Printer took 132.08 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 17:57:06,090 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.69 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 33.24 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 113.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 711.21 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14112.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.0 MB). Peak memory consumption was 95.5 MB. Max. memory is 11.5 GB. * Witness Printer took 132.08 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: - PositiveResult [Line: 85]: 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: 26]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 14.0s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 9.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 479 SDtfs, 187 SDslu, 1586 SDs, 0 SdLazy, 610 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 85 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 42078 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1082 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...