./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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_1232b_false-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 064927d7c1e3d8158c8524deee46f65d988c7936 ........................................................................................................................................................................................................................................................................................................................................................ 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_1232b_false-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 064927d7c1e3d8158c8524deee46f65d988c7936 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 09:17:15,052 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:17:15,054 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:17:15,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:17:15,068 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:17:15,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:17:15,070 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:17:15,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:17:15,074 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:17:15,075 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:17:15,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:17:15,077 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:17:15,078 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:17:15,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:17:15,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:17:15,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:17:15,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:17:15,084 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:17:15,086 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:17:15,087 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:17:15,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:17:15,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:17:15,092 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:17:15,092 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:15,092 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:15,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:15,095 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:15,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:15,098 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:15,100 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:15,102 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:15,103 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:15,103 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:15,103 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:15,104 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:15,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:15,109 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 09:17:15,135 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:15,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:15,137 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:15,138 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:15,138 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:15,139 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:15,139 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:15,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 09:17:15,140 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:15,140 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:15,140 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:15,141 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:15,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:15,141 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:15,141 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:15,142 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:15,142 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:15,142 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:15,143 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:15,143 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:15,143 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:15,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:15,143 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:15,144 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:15,146 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:15,146 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 09:17:15,147 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:15,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 09:17:15,147 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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-01-12 09:17:15,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:15,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:15,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:15,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:15,200 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:15,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2019-01-12 09:17:15,256 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab4dc926/808cfe2627424566b82559fde7382639/FLAG6435298c3 [2019-01-12 09:17:15,717 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:15,717 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2019-01-12 09:17:15,725 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab4dc926/808cfe2627424566b82559fde7382639/FLAG6435298c3 [2019-01-12 09:17:16,054 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab4dc926/808cfe2627424566b82559fde7382639 [2019-01-12 09:17:16,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:16,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:16,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:16,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:16,064 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:16,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fcd915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16, skipping insertion in model container [2019-01-12 09:17:16,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:16,101 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:16,373 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:16,380 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:16,418 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:16,451 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:16,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16 WrapperNode [2019-01-12 09:17:16,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:16,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:16,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:16,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:16,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:16,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:16,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:16,525 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:16,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:16,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:16,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:16,649 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:16,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (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 [2019-01-12 09:17:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:17:16,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-01-12 09:17:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:16,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-12 09:17:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:17:17,339 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:17,340 INFO L286 CfgBuilder]: Removed 18 assue(true) statements. [2019-01-12 09:17:17,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:17 BoogieIcfgContainer [2019-01-12 09:17:17,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:17,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:17,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:17,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:17,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:16" (1/3) ... [2019-01-12 09:17:17,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fba94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:17, skipping insertion in model container [2019-01-12 09:17:17,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16" (2/3) ... [2019-01-12 09:17:17,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fba94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:17, skipping insertion in model container [2019-01-12 09:17:17,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:17" (3/3) ... [2019-01-12 09:17:17,349 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2019-01-12 09:17:17,359 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:17,367 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:17,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:17,424 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:17,425 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:17,425 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:17,425 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:17,426 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:17,426 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:17,426 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:17,426 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:17,426 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-01-12 09:17:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:17:17,447 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:17,448 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:17,450 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-01-12 09:17:17,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:17,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:17,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:17,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:17,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:17,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:17,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:17,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:17,611 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-01-12 09:17:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:17,630 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-01-12 09:17:17,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:17,632 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:17:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:17,642 INFO L225 Difference]: With dead ends: 62 [2019-01-12 09:17:17,642 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:17,646 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 [2019-01-12 09:17:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-01-12 09:17:17,680 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-01-12 09:17:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:17,681 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-01-12 09:17:17,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-01-12 09:17:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:17:17,682 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:17,682 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:17,682 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-01-12 09:17:17,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:17,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:17,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:17,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:17,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:17,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:17,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:17,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:17,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:17,795 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-01-12 09:17:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:17,982 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-01-12 09:17:17,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:17,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:17:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:17,985 INFO L225 Difference]: With dead ends: 53 [2019-01-12 09:17:17,986 INFO L226 Difference]: Without dead ends: 44 [2019-01-12 09:17:17,987 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-01-12 09:17:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-01-12 09:17:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:17,999 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-01-12 09:17:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:18,001 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:18,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:17:18,003 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:18,004 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:18,004 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:18,004 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-01-12 09:17:18,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:18,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:18,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:18,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:18,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:18,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:18,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:18,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:18,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:18,105 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-01-12 09:17:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:18,313 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-01-12 09:17:18,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:18,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-12 09:17:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:18,318 INFO L225 Difference]: With dead ends: 55 [2019-01-12 09:17:18,318 INFO L226 Difference]: Without dead ends: 46 [2019-01-12 09:17:18,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-01-12 09:17:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-01-12 09:17:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:18,326 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-01-12 09:17:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:18,327 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:18,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:17:18,328 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:18,328 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:18,328 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-01-12 09:17:18,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:18,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:18,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:18,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:18,398 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:18,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:18 BoogieIcfgContainer [2019-01-12 09:17:18,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:18,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:18,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:18,424 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:18,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:17" (3/4) ... [2019-01-12 09:17:18,429 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 09:17:18,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:18,430 INFO L168 Benchmark]: Toolchain (without parser) took 2371.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -88.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,432 INFO L168 Benchmark]: CDTParser took 0.15 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. [2019-01-12 09:17:18,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.38 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.98 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. [2019-01-12 09:17:18,435 INFO L168 Benchmark]: Boogie Preprocessor took 123.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,436 INFO L168 Benchmark]: RCFGBuilder took 692.89 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,436 INFO L168 Benchmark]: TraceAbstraction took 1081.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,437 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:18,443 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 391.38 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.98 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 123.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 692.89 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1081.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 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 0.1.24-0ed9222-m [2019-01-12 09:17:20,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:17:20,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:17:20,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-12 09:17:20,799 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:20,799 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:20,800 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:20,801 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:20,802 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:20,803 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:20,805 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:20,805 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:20,806 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:20,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:20,806 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:20,807 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:20,808 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:20,808 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 09:17:20,827 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:20,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:20,828 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:20,828 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:20,829 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:20,829 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:20,830 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:20,830 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:20,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:20,830 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:20,830 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:20,830 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:20,831 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 09:17:20,831 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 09:17:20,831 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:20,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:20,831 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:20,831 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:20,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:20,835 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:20,836 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:20,836 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:20,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:20,836 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:20,836 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:20,837 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:20,837 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 09:17:20,837 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:20,837 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 09:17:20,837 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 09:17:20,837 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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-01-12 09:17:20,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:20,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:20,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:20,906 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:20,907 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:20,907 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2019-01-12 09:17:20,963 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed221705/c5874f8d3c764fa1a0a8aefdd29e8b4c/FLAG978018764 [2019-01-12 09:17:21,402 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:21,403 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2019-01-12 09:17:21,411 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed221705/c5874f8d3c764fa1a0a8aefdd29e8b4c/FLAG978018764 [2019-01-12 09:17:21,765 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed221705/c5874f8d3c764fa1a0a8aefdd29e8b4c [2019-01-12 09:17:21,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:21,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:21,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:21,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:21,776 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:21,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:21" (1/1) ... [2019-01-12 09:17:21,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c23552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:21, skipping insertion in model container [2019-01-12 09:17:21,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:21" (1/1) ... [2019-01-12 09:17:21,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:21,814 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:22,081 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:22,091 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:22,140 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:22,182 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:22,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22 WrapperNode [2019-01-12 09:17:22,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:22,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:22,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:22,185 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:22,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:22,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:22,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:22,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:22,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:22,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:22,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:22,371 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:22,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (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 [2019-01-12 09:17:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-01-12 09:17:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:17:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-12 09:17:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:22,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:22,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:17:22,700 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:22,932 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:23,099 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:23,138 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:23,138 INFO L286 CfgBuilder]: Removed 18 assue(true) statements. [2019-01-12 09:17:23,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:23 BoogieIcfgContainer [2019-01-12 09:17:23,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:23,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:23,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:23,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:23,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:21" (1/3) ... [2019-01-12 09:17:23,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdd138c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:23, skipping insertion in model container [2019-01-12 09:17:23,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22" (2/3) ... [2019-01-12 09:17:23,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdd138c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:17:23, skipping insertion in model container [2019-01-12 09:17:23,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:23" (3/3) ... [2019-01-12 09:17:23,149 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2019-01-12 09:17:23,159 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:23,168 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:23,186 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:23,217 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:23,218 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:23,218 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:23,218 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:23,219 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:23,219 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:23,219 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:23,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:23,219 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-01-12 09:17:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:17:23,241 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:23,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:23,245 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:23,252 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-01-12 09:17:23,257 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:23,258 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 [2019-01-12 09:17:23,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:23,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:23,348 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:23,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:23,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:23,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:23,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:23,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:23,377 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-01-12 09:17:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:23,397 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-01-12 09:17:23,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:23,399 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:17:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:23,409 INFO L225 Difference]: With dead ends: 62 [2019-01-12 09:17:23,409 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:23,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-01-12 09:17:23,444 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-01-12 09:17:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:23,444 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-01-12 09:17:23,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-01-12 09:17:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:17:23,445 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:23,445 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:23,446 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-01-12 09:17:23,447 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:23,447 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 [2019-01-12 09:17:23,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:23,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:23,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:23,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:23,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:23,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:23,571 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-01-12 09:17:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:23,957 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-01-12 09:17:23,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:23,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:17:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:23,959 INFO L225 Difference]: With dead ends: 53 [2019-01-12 09:17:23,959 INFO L226 Difference]: Without dead ends: 44 [2019-01-12 09:17:23,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-01-12 09:17:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-01-12 09:17:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:23,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-01-12 09:17:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:23,968 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:23,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-12 09:17:23,969 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:23,969 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:23,969 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2019-01-12 09:17:23,971 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:23,971 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 [2019-01-12 09:17:23,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:24,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:24,101 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:24,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:24,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:24,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:24,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:24,121 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-01-12 09:17:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:24,565 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2019-01-12 09:17:24,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:24,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-12 09:17:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:24,566 INFO L225 Difference]: With dead ends: 61 [2019-01-12 09:17:24,567 INFO L226 Difference]: Without dead ends: 39 [2019-01-12 09:17:24,567 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-01-12 09:17:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-01-12 09:17:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-12 09:17:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2019-01-12 09:17:24,574 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 12 [2019-01-12 09:17:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:24,574 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2019-01-12 09:17:24,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2019-01-12 09:17:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-01-12 09:17:24,576 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:24,576 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:24,576 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2019-01-12 09:17:24,577 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:24,577 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:24,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:24,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:24,656 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:24,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:24,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:24,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:24,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:24,667 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 4 states. [2019-01-12 09:17:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:24,918 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-01-12 09:17:24,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:24,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-01-12 09:17:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:24,920 INFO L225 Difference]: With dead ends: 52 [2019-01-12 09:17:24,921 INFO L226 Difference]: Without dead ends: 43 [2019-01-12 09:17:24,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-01-12 09:17:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2019-01-12 09:17:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-12 09:17:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-01-12 09:17:24,931 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2019-01-12 09:17:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:24,932 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-01-12 09:17:24,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-01-12 09:17:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-12 09:17:24,934 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:24,934 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:24,934 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-01-12 09:17:24,936 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:24,937 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 [2019-01-12 09:17:24,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:25,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:25,044 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:25,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:25,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:25,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:25,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:25,057 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 4 states. [2019-01-12 09:17:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:25,147 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-01-12 09:17:25,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:25,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-12 09:17:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:25,148 INFO L225 Difference]: With dead ends: 52 [2019-01-12 09:17:25,149 INFO L226 Difference]: Without dead ends: 43 [2019-01-12 09:17:25,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-01-12 09:17:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2019-01-12 09:17:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-12 09:17:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-01-12 09:17:25,155 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-01-12 09:17:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:25,156 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-01-12 09:17:25,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-01-12 09:17:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-12 09:17:25,157 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:25,157 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:25,157 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:25,158 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2019-01-12 09:17:25,158 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:25,158 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 [2019-01-12 09:17:25,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:25,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:25,305 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:25,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:25,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-12 09:17:25,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-12 09:17:25,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-12 09:17:25,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:25,318 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2019-01-12 09:17:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:25,700 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-01-12 09:17:25,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 09:17:25,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-12 09:17:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:25,702 INFO L225 Difference]: With dead ends: 43 [2019-01-12 09:17:25,702 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:25,703 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-12 09:17:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-01-12 09:17:25,720 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 17 [2019-01-12 09:17:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:25,720 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-01-12 09:17:25,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-12 09:17:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-01-12 09:17:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:25,721 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:25,721 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:25,722 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:25,723 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-01-12 09:17:25,723 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:25,723 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) [2019-01-12 09:17:25,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:25,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:25,889 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:25,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:25,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 09:17:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 09:17:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 09:17:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 09:17:25,902 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-01-12 09:17:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:25,930 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-01-12 09:17:25,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 09:17:25,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-01-12 09:17:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:25,933 INFO L225 Difference]: With dead ends: 39 [2019-01-12 09:17:25,933 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:25,934 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 09:17:25,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-01-12 09:17:25,941 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2019-01-12 09:17:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:25,941 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-01-12 09:17:25,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 09:17:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-01-12 09:17:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:25,942 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:25,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:25,942 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:25,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:25,944 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-01-12 09:17:25,944 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:25,944 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 [2019-01-12 09:17:25,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:26,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:26,093 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:26,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:26,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 09:17:26,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 09:17:26,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 09:17:26,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-12 09:17:26,106 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2019-01-12 09:17:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:26,360 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-01-12 09:17:26,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-12 09:17:26,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-01-12 09:17:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:26,362 INFO L225 Difference]: With dead ends: 41 [2019-01-12 09:17:26,362 INFO L226 Difference]: Without dead ends: 38 [2019-01-12 09:17:26,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-01-12 09:17:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-12 09:17:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-01-12 09:17:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-01-12 09:17:26,371 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2019-01-12 09:17:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:26,371 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-01-12 09:17:26,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 09:17:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-01-12 09:17:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:26,373 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:26,373 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:26,374 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1049593954, now seen corresponding path program 1 times [2019-01-12 09:17:26,375 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:26,375 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 [2019-01-12 09:17:26,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:26,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:17:26,485 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:26,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:26,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:26,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:26,497 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2019-01-12 09:17:26,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:26,573 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2019-01-12 09:17:26,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:26,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-01-12 09:17:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:26,575 INFO L225 Difference]: With dead ends: 51 [2019-01-12 09:17:26,575 INFO L226 Difference]: Without dead ends: 42 [2019-01-12 09:17:26,575 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:26,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-01-12 09:17:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2019-01-12 09:17:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-01-12 09:17:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-01-12 09:17:26,583 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2019-01-12 09:17:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:26,584 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-01-12 09:17:26,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-01-12 09:17:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-12 09:17:26,585 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:26,586 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] [2019-01-12 09:17:26,586 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:26,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-01-12 09:17:26,587 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:26,587 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 [2019-01-12 09:17:26,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:26,915 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:27,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:27 BoogieIcfgContainer [2019-01-12 09:17:27,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:27,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:27,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:27,004 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:27,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:23" (3/4) ... [2019-01-12 09:17:27,009 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 09:17:27,083 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 09:17:27,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:27,084 INFO L168 Benchmark]: Toolchain (without parser) took 5314.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.3 MB in the beginning and 913.6 MB in the end (delta: 29.7 MB). Peak memory consumption was 167.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,090 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:27,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.29 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.89 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,095 INFO L168 Benchmark]: Boogie Preprocessor took 122.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -198.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,095 INFO L168 Benchmark]: RCFGBuilder took 769.00 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,096 INFO L168 Benchmark]: TraceAbstraction took 3861.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.6 MB in the end (delta: 186.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,097 INFO L168 Benchmark]: Witness Printer took 80.25 ms. Allocated memory is still 1.2 GB. Free memory is still 913.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:27,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 411.29 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 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 63.89 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 122.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -198.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 769.00 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3861.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.6 MB in the end (delta: 186.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 11.5 GB. * Witness Printer took 80.25 ms. Allocated memory is still 1.2 GB. Free memory is still 913.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L46] COND FALSE !(__fpclassify_double(x) == 0) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y [L51] return x < y ? x : y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L55] __uint32_t msw; [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 3.7s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 326 SDtfs, 209 SDslu, 383 SDs, 0 SdLazy, 132 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 9 MinimizatonAttempts, 72 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 124 ConstructedInterpolants, 6 QuantifiedInterpolants, 5311 SizeOfPredicates, 27 NumberOfNonLiveVariables, 484 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...