./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1250_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_1250_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 01b6390e563edc58f3f7d1f239b082df891f9006 ........................................................................................................................................................................................................................................................................................................................................................................................ 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_1250_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 01b6390e563edc58f3f7d1f239b082df891f9006 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 17:56:36,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:36,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:36,046 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:36,046 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:36,048 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:36,049 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:36,051 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:36,053 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:36,054 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:36,055 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:36,056 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:36,057 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:36,058 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:36,059 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:36,060 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:36,061 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:36,063 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:36,065 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:36,067 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:36,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:36,070 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:36,073 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:36,073 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:36,073 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:36,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:36,076 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:36,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:36,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:36,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:36,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:36,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:36,081 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:36,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:36,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:36,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:36,083 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:56:36,099 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:36,099 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:36,100 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:36,100 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:36,101 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:36,101 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:36,101 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:36,101 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:36,102 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:36,102 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:56:36,102 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:36,102 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:36,102 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:36,102 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:36,103 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:36,103 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:36,103 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:36,103 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:36,103 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:36,103 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:36,104 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:36,104 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:36,104 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:36,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:36,104 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:36,105 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:36,105 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:36,105 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:56:36,105 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:36,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:56:36,105 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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-11-28 17:56:36,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:36,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:36,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:36,160 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:36,160 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:36,161 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-11-28 17:56:36,225 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16caa55c7/f8ba3b635ee54f458e10ee9f417f172d/FLAGbd50435b4 [2018-11-28 17:56:36,715 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:36,716 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-11-28 17:56:36,723 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16caa55c7/f8ba3b635ee54f458e10ee9f417f172d/FLAGbd50435b4 [2018-11-28 17:56:37,049 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16caa55c7/f8ba3b635ee54f458e10ee9f417f172d [2018-11-28 17:56:37,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:37,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:37,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:37,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:37,060 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:37,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a15a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37, skipping insertion in model container [2018-11-28 17:56:37,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:37,101 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:37,351 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:37,355 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:37,392 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:37,427 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:37,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37 WrapperNode [2018-11-28 17:56:37,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:37,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:37,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:37,429 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:37,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:37,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:37,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:37,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:37,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:37,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:37,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:37,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:37,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (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 17:56:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-28 17:56:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-28 17:56:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:37,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-28 17:56:37,632 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-28 17:56:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 17:56:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 17:56:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:38,141 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:38,142 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 17:56:38,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:38 BoogieIcfgContainer [2018-11-28 17:56:38,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:38,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:38,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:38,148 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:37" (1/3) ... [2018-11-28 17:56:38,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2536ab8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:38, skipping insertion in model container [2018-11-28 17:56:38,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (2/3) ... [2018-11-28 17:56:38,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2536ab8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:38, skipping insertion in model container [2018-11-28 17:56:38,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:38" (3/3) ... [2018-11-28 17:56:38,154 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-11-28 17:56:38,163 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:38,171 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:38,188 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:38,222 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:38,222 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:38,223 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:38,223 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:38,223 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:38,223 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:38,224 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:38,224 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:38,224 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-28 17:56:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:38,250 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,251 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 17:56:38,253 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1777529962, now seen corresponding path program 1 times [2018-11-28 17:56:38,262 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:38,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:38,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,403 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 17:56:38,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:38,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:38,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:38,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:38,428 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-28 17:56:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:38,456 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-28 17:56:38,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:38,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-28 17:56:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,467 INFO L225 Difference]: With dead ends: 71 [2018-11-28 17:56:38,467 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:38,470 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 17:56:38,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 17:56:38,517 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-28 17:56:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:38,518 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 17:56:38,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 17:56:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 17:56:38,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,521 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:38,521 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1782564235, now seen corresponding path program 1 times [2018-11-28 17:56:38,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:38,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:38,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,794 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 17:56:38,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:38,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:38,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:38,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,798 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 17:56:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:38,986 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-28 17:56:38,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:38,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 17:56:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,990 INFO L225 Difference]: With dead ends: 51 [2018-11-28 17:56:38,991 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 17:56:38,992 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 17:56:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 17:56:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 17:56:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 17:56:39,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-28 17:56:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:39,003 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 17:56:39,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 17:56:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 17:56:39,005 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:39,005 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:39,005 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:39,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:39,006 INFO L82 PathProgramCache]: Analyzing trace with hash 105963089, now seen corresponding path program 1 times [2018-11-28 17:56:39,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:39,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:39,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:39,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:39,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:39,099 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 17:56:39,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:39,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:39,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:39,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:39,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:39,101 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 17:56:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:39,212 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-28 17:56:39,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:39,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 17:56:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:39,216 INFO L225 Difference]: With dead ends: 55 [2018-11-28 17:56:39,216 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 17:56:39,217 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 17:56:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 17:56:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-28 17:56:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 17:56:39,229 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-28 17:56:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:39,231 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 17:56:39,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 17:56:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 17:56:39,233 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:39,233 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:39,233 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:39,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1613514898, now seen corresponding path program 1 times [2018-11-28 17:56:39,234 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:39,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:39,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:39,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:39,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:39,370 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:56:39,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:56:39 BoogieIcfgContainer [2018-11-28 17:56:39,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:56:39,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:56:39,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:56:39,405 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:56:39,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:38" (3/4) ... [2018-11-28 17:56:39,409 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:56:39,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:56:39,410 INFO L168 Benchmark]: Toolchain (without parser) took 2357.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -117.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,412 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.89 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,414 INFO L168 Benchmark]: Boogie Preprocessor took 42.51 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,415 INFO L168 Benchmark]: RCFGBuilder took 634.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,416 INFO L168 Benchmark]: TraceAbstraction took 1259.63 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,417 INFO L168 Benchmark]: Witness Printer took 5.25 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 17:56:39,422 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.89 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 37.17 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.51 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 634.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1259.63 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.25 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: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967303] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967302, y=4294967303] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=4294967302, \old(y)=4294967303, \result=4294967303, x=4294967302, y=4294967303] [L69] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=4294967302, y=4294967303] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L16] return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L71] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967302, y=4294967303] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4294967303, x=4294967302, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 17:56:41,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:41,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:41,853 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:41,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:41,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:41,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:41,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:41,860 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:41,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:41,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:41,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:41,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:41,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:41,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:41,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:41,872 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:41,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:41,883 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:41,887 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:41,893 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:41,894 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:41,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:41,899 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:41,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:41,903 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:41,906 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:41,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:41,910 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:41,911 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:41,911 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:41,914 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:41,914 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:41,914 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:41,915 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:41,916 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:41,916 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:56:41,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:41,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:41,948 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:41,948 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:41,948 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:41,952 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:41,952 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:41,953 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:41,953 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:41,953 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:41,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:41,953 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:41,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:41,954 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:41,954 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:56:41,955 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:56:41,955 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:41,955 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:41,955 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:41,955 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:41,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:41,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:41,957 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:41,957 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:41,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:41,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:41,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:41,958 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:41,958 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:56:41,958 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:41,959 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:56:41,959 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:56:41,959 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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-11-28 17:56:42,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:42,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:42,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:42,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:42,056 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:42,056 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-11-28 17:56:42,120 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9097f2e49/67adcbabdbbd4943b1268155283016b4/FLAG90e69407b [2018-11-28 17:56:42,547 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:42,547 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-11-28 17:56:42,554 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9097f2e49/67adcbabdbbd4943b1268155283016b4/FLAG90e69407b [2018-11-28 17:56:42,951 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9097f2e49/67adcbabdbbd4943b1268155283016b4 [2018-11-28 17:56:42,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:42,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:42,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:42,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:42,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:42,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f345ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42, skipping insertion in model container [2018-11-28 17:56:42,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:43,004 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:43,260 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:43,268 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:43,314 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:43,346 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:43,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43 WrapperNode [2018-11-28 17:56:43,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:43,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:43,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:43,348 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:43,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:43,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:43,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:43,377 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:43,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (1/1) ... [2018-11-28 17:56:43,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:43,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:43,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:43,490 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:43,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (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 17:56:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-28 17:56:43,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-28 17:56:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 17:56:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-28 17:56:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-28 17:56:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 17:56:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:43,766 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:56:44,070 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:44,071 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 17:56:44,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:44 BoogieIcfgContainer [2018-11-28 17:56:44,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:44,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:44,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:44,076 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:44,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:42" (1/3) ... [2018-11-28 17:56:44,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edbea28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:44, skipping insertion in model container [2018-11-28 17:56:44,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:43" (2/3) ... [2018-11-28 17:56:44,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edbea28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:44, skipping insertion in model container [2018-11-28 17:56:44,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:44" (3/3) ... [2018-11-28 17:56:44,080 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-11-28 17:56:44,089 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:44,096 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:44,115 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:44,147 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:44,148 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:44,148 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:44,148 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:44,149 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:44,150 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:44,150 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:44,150 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:44,150 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-28 17:56:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 17:56:44,173 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:44,174 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 17:56:44,176 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:44,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash 656433164, now seen corresponding path program 1 times [2018-11-28 17:56:44,186 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:44,187 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 17:56:44,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:44,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:44,301 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 17:56:44,302 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:44,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:44,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:44,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:44,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:44,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:44,342 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-28 17:56:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:44,367 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-28 17:56:44,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:44,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-28 17:56:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:44,378 INFO L225 Difference]: With dead ends: 65 [2018-11-28 17:56:44,378 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:56:44,383 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:56:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:56:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-28 17:56:44,428 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-28 17:56:44,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:44,429 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-28 17:56:44,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-28 17:56:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 17:56:44,432 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:44,432 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 17:56:44,433 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:44,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:44,433 INFO L82 PathProgramCache]: Analyzing trace with hash 123034921, now seen corresponding path program 1 times [2018-11-28 17:56:44,435 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:44,435 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 17:56:44,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:44,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:44,598 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 17:56:44,598 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:44,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:44,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:44,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:44,618 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-28 17:56:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:44,737 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-28 17:56:44,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:44,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 17:56:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:44,741 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:44,741 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:44,742 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:44,753 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-28 17:56:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:44,754 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:44,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:44,754 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:44,755 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:44,755 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 17:56:44,756 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:44,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:44,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1807372911, now seen corresponding path program 1 times [2018-11-28 17:56:44,757 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:44,757 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:44,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:44,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:44,992 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 17:56:44,992 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:45,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:45,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:45,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:45,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:45,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:45,009 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 17:56:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:45,109 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 17:56:45,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:45,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 17:56:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:45,112 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:45,112 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:45,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 17:56:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:45,122 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-28 17:56:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:45,123 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:45,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:45,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 17:56:45,124 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:45,124 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:45,125 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:45,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1308631021, now seen corresponding path program 1 times [2018-11-28 17:56:45,126 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:45,126 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 17:56:45,139 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 17:56:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:45,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:45,254 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 17:56:45,255 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:45,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:45,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:45,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:45,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:45,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:45,270 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 17:56:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:45,410 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 17:56:45,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:45,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 17:56:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:45,413 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:45,413 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:45,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 17:56:45,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:45,421 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-28 17:56:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:45,422 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:45,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 17:56:45,423 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:45,423 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:45,424 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:45,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:45,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1853889587, now seen corresponding path program 1 times [2018-11-28 17:56:45,425 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:45,425 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 17:56:45,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:45,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:45,522 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 17:56:45,522 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:45,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:45,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:45,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:45,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:45,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:45,536 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-28 17:56:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:45,618 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 17:56:45,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:45,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-28 17:56:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:45,620 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:45,620 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:45,621 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-28 17:56:45,632 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-28 17:56:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:45,632 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 17:56:45,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-28 17:56:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 17:56:45,634 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:45,634 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:45,634 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:45,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:45,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1560486580, now seen corresponding path program 1 times [2018-11-28 17:56:45,636 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:45,636 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 17:56:45,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:45,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:45,952 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 17:56:45,953 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:45,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:45,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 17:56:45,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 17:56:45,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 17:56:45,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 17:56:45,968 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-28 17:56:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:47,229 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-28 17:56:47,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 17:56:47,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-28 17:56:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:47,232 INFO L225 Difference]: With dead ends: 43 [2018-11-28 17:56:47,232 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:47,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 17:56:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-28 17:56:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-28 17:56:47,240 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-28 17:56:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:47,240 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-28 17:56:47,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 17:56:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-28 17:56:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 17:56:47,242 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:47,242 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:47,242 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:47,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash -132849900, now seen corresponding path program 1 times [2018-11-28 17:56:47,243 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:47,243 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:47,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:47,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:47,402 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 17:56:47,402 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:47,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:47,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:47,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:47,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:47,415 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-28 17:56:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:47,439 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-28 17:56:47,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:47,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-28 17:56:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:47,441 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:47,441 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:47,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 17:56:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 17:56:47,449 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-28 17:56:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:47,449 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 17:56:47,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 17:56:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 17:56:47,451 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:47,451 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:47,451 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:47,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:47,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1974935426, now seen corresponding path program 1 times [2018-11-28 17:56:47,452 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:47,452 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:47,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:47,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:47,603 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 17:56:47,604 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:47,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:47,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:47,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:47,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:47,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:47,619 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-28 17:56:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:47,676 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-28 17:56:47,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:47,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-28 17:56:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:47,678 INFO L225 Difference]: With dead ends: 49 [2018-11-28 17:56:47,678 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 17:56:47,679 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 17:56:47,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-28 17:56:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-28 17:56:47,688 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-28 17:56:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:47,688 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-28 17:56:47,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-28 17:56:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 17:56:47,691 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:47,691 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:47,691 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:47,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:47,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1277705297, now seen corresponding path program 1 times [2018-11-28 17:56:47,692 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:47,692 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:47,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:47,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:48,272 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:48,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:48,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-28 17:56:48,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 17:56:48,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 17:56:48,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-28 17:56:48,283 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-11-28 17:56:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:48,862 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-28 17:56:48,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 17:56:48,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-28 17:56:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:48,864 INFO L225 Difference]: With dead ends: 44 [2018-11-28 17:56:48,864 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 17:56:48,865 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-28 17:56:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 17:56:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 17:56:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 17:56:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-28 17:56:48,873 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-28 17:56:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:48,874 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-28 17:56:48,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 17:56:48,874 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-28 17:56:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 17:56:48,875 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:48,875 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:48,875 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:48,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash 576640719, now seen corresponding path program 1 times [2018-11-28 17:56:48,876 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:48,876 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:48,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:48,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:49,166 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:49,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:49,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 17:56:49,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 17:56:49,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 17:56:49,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 17:56:49,179 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-28 17:56:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:49,666 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-11-28 17:56:49,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 17:56:49,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 17:56:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:49,669 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:49,670 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 17:56:49,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 17:56:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 17:56:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 17:56:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 17:56:49,675 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 17:56:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:49,675 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 17:56:49,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 17:56:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 17:56:49,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 17:56:49,676 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:49,677 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:49,677 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:49,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:49,677 INFO L82 PathProgramCache]: Analyzing trace with hash -123656616, now seen corresponding path program 1 times [2018-11-28 17:56:49,677 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:49,678 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:49,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:49,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:49,796 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 17:56:49,796 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:49,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:49,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:49,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:49,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:49,812 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 17:56:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:49,847 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 17:56:49,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:49,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-28 17:56:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:49,849 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:49,849 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 17:56:49,850 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 17:56:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 17:56:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 17:56:49,856 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-28 17:56:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:49,856 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 17:56:49,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 17:56:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 17:56:49,857 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:49,858 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:49,860 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:49,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash 257799618, now seen corresponding path program 1 times [2018-11-28 17:56:49,860 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:49,860 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:49,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:49,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:50,003 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 17:56:50,003 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:50,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:50,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:50,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:50,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:50,015 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-28 17:56:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:50,082 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-28 17:56:50,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:50,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 17:56:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:50,084 INFO L225 Difference]: With dead ends: 46 [2018-11-28 17:56:50,084 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 17:56:50,084 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 17:56:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 17:56:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 17:56:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 17:56:50,089 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-28 17:56:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:50,090 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 17:56:50,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 17:56:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 17:56:50,091 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:50,091 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:50,091 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:50,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -35603389, now seen corresponding path program 1 times [2018-11-28 17:56:50,092 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:50,092 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:50,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:50,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:50,407 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:50,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:50,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 17:56:50,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 17:56:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 17:56:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 17:56:50,418 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-28 17:56:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:50,770 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 17:56:50,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 17:56:50,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-28 17:56:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:50,771 INFO L225 Difference]: With dead ends: 33 [2018-11-28 17:56:50,771 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 17:56:50,772 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 17:56:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 17:56:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 17:56:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 17:56:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 17:56:50,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 17:56:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:50,773 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 17:56:50,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 17:56:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 17:56:50,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 17:56:50,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 17:56:51,036 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-28 17:56:51,263 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-11-28 17:56:51,263 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-11-28 17:56:51,263 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-11-28 17:56:51,263 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-11-28 17:56:51,263 INFO L451 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: true [2018-11-28 17:56:51,263 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-11-28 17:56:51,264 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:56:51,264 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:56:51,265 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:56:51,265 INFO L448 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-11-28 17:56:51,265 INFO L448 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-11-28 17:56:51,265 INFO L444 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-11-28 17:56:51,265 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-11-28 17:56:51,265 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-11-28 17:56:51,265 INFO L444 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-11-28 17:56:51,265 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-11-28 17:56:51,265 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-11-28 17:56:51,268 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-11-28 17:56:51,268 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:56:51,268 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 17:56:51,269 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:56:51,269 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:56:51,269 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2018-11-28 17:56:51,269 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 63 76) the Hoare annotation is: true [2018-11-28 17:56:51,269 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 63 76) no Hoare annotation was computed. [2018-11-28 17:56:51,269 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 63 76) no Hoare annotation was computed. [2018-11-28 17:56:51,269 INFO L448 ceAbstractionStarter]: For program point L72(line 72) no Hoare annotation was computed. [2018-11-28 17:56:51,269 INFO L444 ceAbstractionStarter]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-11-28 17:56:51,269 INFO L448 ceAbstractionStarter]: For program point L71-1(lines 71 74) no Hoare annotation was computed. [2018-11-28 17:56:51,270 INFO L444 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-11-28 17:56:51,270 INFO L448 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-11-28 17:56:51,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:56:51 BoogieIcfgContainer [2018-11-28 17:56:51,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:56:51,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:56:51,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:56:51,280 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:56:51,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:44" (3/4) ... [2018-11-28 17:56:51,284 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 17:56:51,290 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-28 17:56:51,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-28 17:56:51,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 17:56:51,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-11-28 17:56:51,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 17:56:51,297 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-28 17:56:51,297 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 17:56:51,298 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 17:56:51,361 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:56:51,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:56:51,366 INFO L168 Benchmark]: Toolchain (without parser) took 8410.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -214.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:51,368 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:51,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.10 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:51,369 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.05 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:51,370 INFO L168 Benchmark]: Boogie Preprocessor took 111.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:51,371 INFO L168 Benchmark]: RCFGBuilder took 582.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:51,371 INFO L168 Benchmark]: TraceAbstraction took 7206.49 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -88.3 MB). Peak memory consumption was 309.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:51,372 INFO L168 Benchmark]: Witness Printer took 86.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:51,376 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 389.10 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.05 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 111.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 582.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7206.49 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -88.3 MB). Peak memory consumption was 309.4 MB. Max. memory is 11.5 GB. * Witness Printer took 86.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: 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: 29]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 7.1s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21655 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...