./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_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_1252b_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 6f57b560c2271100a3cc213cf38aa06905e4b86e ........................................................................................................................................................................................................................................................................................................................................................ 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_1252b_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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:17:15,223 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:17:15,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:17:15,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:17:15,237 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:17:15,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:17:15,239 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:17:15,241 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:17:15,243 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:17:15,244 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:17:15,246 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:17:15,246 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:17:15,247 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:17:15,248 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:17:15,249 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:17:15,250 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:17:15,251 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:17:15,253 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:17:15,256 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:17:15,258 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:17:15,259 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:17:15,260 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:17:15,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:17:15,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:15,264 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:15,265 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:15,266 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:15,267 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:15,268 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:15,269 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:15,270 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:15,270 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:15,270 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:15,271 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:15,272 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:15,273 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:15,273 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 09:17:15,289 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:15,290 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:15,291 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:15,291 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:15,291 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:15,292 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:15,293 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:15,293 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 09:17:15,293 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:15,293 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:15,293 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:15,293 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:15,294 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:15,294 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:15,294 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:15,294 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:15,294 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:15,294 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:15,295 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:15,296 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:15,296 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:15,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:15,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:15,297 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:15,297 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:15,297 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 09:17:15,297 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:15,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 09:17:15,299 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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-01-12 09:17:15,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:15,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:15,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:15,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:15,386 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:15,387 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:15,458 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8260d0b00/5572462b41d5410c999f4a8b2f8862e4/FLAG4675ed966 [2019-01-12 09:17:15,861 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:15,861 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:15,867 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8260d0b00/5572462b41d5410c999f4a8b2f8862e4/FLAG4675ed966 [2019-01-12 09:17:16,232 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8260d0b00/5572462b41d5410c999f4a8b2f8862e4 [2019-01-12 09:17:16,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:16,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:16,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:16,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:16,247 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:16,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c384f49 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 09:17:16,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:16" (1/1) ... [2019-01-12 09:17:16,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:16,283 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:16,540 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:16,546 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:16,582 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:16,614 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:16,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:16 WrapperNode [2019-01-12 09:17:16,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:16,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:16,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:16,616 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:16,627 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 09:17:16,644 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 09:17:16,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:16,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:16,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:16,688 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:16,815 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 09:17:16,816 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 09:17:16,824 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 09:17:16,824 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 09:17:16,842 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 09:17:16,856 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 09:17:16,859 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 09:17:16,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:16,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:16,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:16,866 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:16,866 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 09:17:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:17:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-01-12 09:17:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-12 09:17:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:17:17,602 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:17,603 INFO L286 CfgBuilder]: Removed 18 assue(true) statements. [2019-01-12 09:17:17,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:17 BoogieIcfgContainer [2019-01-12 09:17:17,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:17,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:17,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:17,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:17,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:16" (1/3) ... [2019-01-12 09:17:17,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ece36 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 09:17:17,610 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 09:17:17,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ece36 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 09:17:17,611 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 09:17:17,612 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:17,621 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:17,628 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:17,646 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:17,675 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:17,676 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:17,676 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:17,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:17,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:17,677 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:17,677 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:17,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:17,677 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-01-12 09:17:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:17:17,700 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:17,701 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:17,704 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:17,710 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-01-12 09:17:17,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:17,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:17,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:17,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:17,835 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 09:17:17,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:17,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:17,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:17,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:17,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:17,856 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-01-12 09:17:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:17,873 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-01-12 09:17:17,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:17,874 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:17:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:17,884 INFO L225 Difference]: With dead ends: 62 [2019-01-12 09:17:17,885 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:17,888 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 09:17:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-01-12 09:17:17,928 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-01-12 09:17:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:17,929 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-01-12 09:17:17,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-01-12 09:17:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:17:17,930 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:17,930 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:17,930 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:17,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-01-12 09:17:17,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:17,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:17,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:17,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:18,055 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 09:17:18,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:18,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:18,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:18,059 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-01-12 09:17:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:18,257 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-01-12 09:17:18,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:18,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:17:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:18,260 INFO L225 Difference]: With dead ends: 53 [2019-01-12 09:17:18,261 INFO L226 Difference]: Without dead ends: 44 [2019-01-12 09:17:18,263 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 09:17:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-01-12 09:17:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-01-12 09:17:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:18,271 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-01-12 09:17:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:18,272 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:18,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:17:18,273 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:18,273 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:18,273 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:18,273 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-01-12 09:17:18,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:18,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:18,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:18,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:18,450 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 09:17:18,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:18,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:18,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:18,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:18,451 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-01-12 09:17:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:18,648 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-01-12 09:17:18,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:18,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-12 09:17:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:18,650 INFO L225 Difference]: With dead ends: 55 [2019-01-12 09:17:18,650 INFO L226 Difference]: Without dead ends: 46 [2019-01-12 09:17:18,651 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:17:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-01-12 09:17:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-01-12 09:17:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:18,659 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-01-12 09:17:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:18,659 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:18,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:17:18,660 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:18,660 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:18,661 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:18,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:18,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-01-12 09:17:18,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:17:18,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:17:18,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:18,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:17:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:18,768 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:18,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:18 BoogieIcfgContainer [2019-01-12 09:17:18,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:18,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:18,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:18,812 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:18,813 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 09:17:18,817 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 09:17:18,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:18,818 INFO L168 Benchmark]: Toolchain (without parser) took 2578.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -126.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,821 INFO L168 Benchmark]: CDTParser took 0.22 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 09:17:18,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.60 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.61 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 09:17:18,824 INFO L168 Benchmark]: Boogie Preprocessor took 177.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -210.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,825 INFO L168 Benchmark]: RCFGBuilder took 739.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,826 INFO L168 Benchmark]: TraceAbstraction took 1205.67 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: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:18,827 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:17:18,834 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 372.60 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.61 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 177.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -210.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 739.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1205.67 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: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.1s 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.2s 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 09:17:21,237 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2019-01-12 09:17:21,276 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:17:21,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:17:21,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:17:21,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:17:21,280 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:17:21,281 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:17:21,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:17:21,286 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:17:21,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:17:21,287 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:17:21,287 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:17:21,288 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:17:21,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:17:21,289 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 09:17:21,321 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:17:21,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:17:21,326 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:17:21,326 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:17:21,326 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:17:21,327 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:17:21,327 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:17:21,327 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:17:21,327 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:17:21,327 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:17:21,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:17:21,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:17:21,329 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 09:17:21,329 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 09:17:21,329 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:17:21,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:17:21,329 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:17:21,330 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:17:21,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:17:21,331 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:17:21,331 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:17:21,331 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:17:21,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:17:21,332 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:17:21,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:17:21,332 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:17:21,332 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 09:17:21,332 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:17:21,333 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 09:17:21,333 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 09:17:21,333 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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-01-12 09:17:21,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:17:21,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:17:21,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:17:21,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:17:21,415 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:17:21,416 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:21,477 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95635137/f2f869966afb410c968256fb9a716a06/FLAGa00e266d9 [2019-01-12 09:17:21,896 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:17:21,897 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:21,904 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95635137/f2f869966afb410c968256fb9a716a06/FLAGa00e266d9 [2019-01-12 09:17:22,271 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95635137/f2f869966afb410c968256fb9a716a06 [2019-01-12 09:17:22,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:17:22,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:17:22,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:22,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:17:22,281 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:17:22,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f9cd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22, skipping insertion in model container [2019-01-12 09:17:22,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:17:22" (1/1) ... [2019-01-12 09:17:22,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:17:22,323 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:17:22,510 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:22,531 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:17:22,580 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:17:22,639 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:17:22,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:17:22 WrapperNode [2019-01-12 09:17:22,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:17:22,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:22,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:17:22,640 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:17:22,651 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 09:17:22,674 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 09:17:22,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:17:22,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:17:22,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:17:22,819 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:17:22,830 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 09:17:22,830 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 09:17:22,837 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 09:17:22,837 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 09:17:22,865 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 09:17:22,871 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 09:17:22,874 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 09:17:22,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:17:22,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:17:22,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:17:22,879 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:17:22,880 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 09:17:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-01-12 09:17:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:17:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-12 09:17:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:17:22,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:17:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:17:23,185 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:23,431 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:23,601 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:17:23,650 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:17:23,651 INFO L286 CfgBuilder]: Removed 18 assue(true) statements. [2019-01-12 09:17:23,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:17:23 BoogieIcfgContainer [2019-01-12 09:17:23,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:17:23,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:17:23,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:17:23,656 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:17:23,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:17:22" (1/3) ... [2019-01-12 09:17:23,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcbeddd 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 09:17:23,658 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 09:17:23,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcbeddd 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 09:17:23,658 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 09:17:23,660 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2019-01-12 09:17:23,670 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:17:23,678 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:17:23,696 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:17:23,728 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:17:23,729 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:17:23,729 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:17:23,729 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:17:23,729 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:17:23,729 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:17:23,730 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:17:23,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:17:23,730 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:17:23,745 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-01-12 09:17:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:17:23,752 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:23,753 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:23,756 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-01-12 09:17:23,765 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:23,766 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 09:17:23,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:23,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:23,844 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 09:17:23,845 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:23,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:23,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:17:23,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:17:23,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:17:23,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:17:23,874 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-01-12 09:17:23,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:23,894 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-01-12 09:17:23,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:17:23,896 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:17:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:23,906 INFO L225 Difference]: With dead ends: 62 [2019-01-12 09:17:23,907 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:23,910 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 09:17:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-01-12 09:17:23,946 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-01-12 09:17:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:23,946 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-01-12 09:17:23,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:17:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-01-12 09:17:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:17:23,947 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:23,947 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:23,948 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:23,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-01-12 09:17:23,949 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:23,949 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 09:17:23,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:24,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:24,091 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 09:17:24,092 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:24,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:24,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:24,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:24,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:24,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:24,105 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-01-12 09:17:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:24,385 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-01-12 09:17:24,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:24,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:17:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:24,388 INFO L225 Difference]: With dead ends: 53 [2019-01-12 09:17:24,388 INFO L226 Difference]: Without dead ends: 44 [2019-01-12 09:17:24,389 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 09:17:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-01-12 09:17:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-01-12 09:17:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-01-12 09:17:24,397 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-01-12 09:17:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:24,398 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-01-12 09:17:24,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-01-12 09:17:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-12 09:17:24,399 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:24,399 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:24,399 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2019-01-12 09:17:24,401 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:24,401 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 09:17:24,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:24,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:24,599 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 09:17:24,599 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:24,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:24,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:24,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:24,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:24,617 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-01-12 09:17:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:24,848 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2019-01-12 09:17:24,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:24,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-01-12 09:17:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:24,850 INFO L225 Difference]: With dead ends: 61 [2019-01-12 09:17:24,850 INFO L226 Difference]: Without dead ends: 39 [2019-01-12 09:17:24,853 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 09:17:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-01-12 09:17:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-01-12 09:17:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-12 09:17:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2019-01-12 09:17:24,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 12 [2019-01-12 09:17:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:24,865 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2019-01-12 09:17:24,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2019-01-12 09:17:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-01-12 09:17:24,866 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:24,866 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:24,867 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:24,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:24,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2019-01-12 09:17:24,868 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:24,868 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 09:17:24,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:24,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:24,948 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 09:17:24,949 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:24,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:24,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:24,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:24,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:24,961 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 4 states. [2019-01-12 09:17:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:25,092 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-01-12 09:17:25,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:25,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-01-12 09:17:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:25,094 INFO L225 Difference]: With dead ends: 52 [2019-01-12 09:17:25,094 INFO L226 Difference]: Without dead ends: 43 [2019-01-12 09:17:25,094 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 09:17:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-01-12 09:17:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2019-01-12 09:17:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-12 09:17:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-01-12 09:17:25,100 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2019-01-12 09:17:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:25,101 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-01-12 09:17:25,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-01-12 09:17:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-12 09:17:25,102 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:25,102 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:17:25,102 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:25,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:25,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-01-12 09:17:25,103 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:25,103 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 09:17:25,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:25,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:25,234 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 09:17:25,235 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:25,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:25,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:25,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:25,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:25,246 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 4 states. [2019-01-12 09:17:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:25,323 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-01-12 09:17:25,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:25,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-12 09:17:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:25,328 INFO L225 Difference]: With dead ends: 52 [2019-01-12 09:17:25,328 INFO L226 Difference]: Without dead ends: 43 [2019-01-12 09:17:25,329 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 09:17:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-01-12 09:17:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2019-01-12 09:17:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-01-12 09:17:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-01-12 09:17:25,335 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-01-12 09:17:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:25,335 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-01-12 09:17:25,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-01-12 09:17:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-12 09:17:25,336 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:25,336 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 09:17:25,337 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:25,337 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2019-01-12 09:17:25,337 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:25,338 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 09:17:25,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:25,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:25,509 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 09:17:25,510 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:25,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:25,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-12 09:17:25,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-12 09:17:25,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-12 09:17:25,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:17:25,528 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2019-01-12 09:17:25,983 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-01-12 09:17:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:26,044 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-01-12 09:17:26,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 09:17:26,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-01-12 09:17:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:26,047 INFO L225 Difference]: With dead ends: 43 [2019-01-12 09:17:26,047 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:26,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-12 09:17:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-01-12 09:17:26,054 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 17 [2019-01-12 09:17:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:26,055 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-01-12 09:17:26,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-12 09:17:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-01-12 09:17:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:26,056 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:26,056 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 09:17:26,056 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:26,057 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-01-12 09:17:26,057 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:26,057 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-01-12 09:17:26,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:26,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:26,171 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 09:17:26,172 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:26,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:26,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 09:17:26,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 09:17:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 09:17:26,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 09:17:26,186 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-01-12 09:17:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:26,224 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-01-12 09:17:26,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 09:17:26,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-01-12 09:17:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:26,226 INFO L225 Difference]: With dead ends: 39 [2019-01-12 09:17:26,226 INFO L226 Difference]: Without dead ends: 29 [2019-01-12 09:17:26,227 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 09:17:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-12 09:17:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-01-12 09:17:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-01-12 09:17:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-01-12 09:17:26,234 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2019-01-12 09:17:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:26,234 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-01-12 09:17:26,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 09:17:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-01-12 09:17:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:26,235 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:26,235 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 09:17:26,236 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:26,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:26,236 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-01-12 09:17:26,237 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:26,237 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 09:17:26,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:26,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:26,387 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 09:17:26,388 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:26,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:26,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 09:17:26,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 09:17:26,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 09:17:26,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-12 09:17:26,401 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2019-01-12 09:17:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:26,669 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-01-12 09:17:26,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-12 09:17:26,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-01-12 09:17:26,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:26,671 INFO L225 Difference]: With dead ends: 41 [2019-01-12 09:17:26,672 INFO L226 Difference]: Without dead ends: 38 [2019-01-12 09:17:26,672 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 09:17:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-12 09:17:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-01-12 09:17:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-01-12 09:17:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-01-12 09:17:26,680 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2019-01-12 09:17:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:26,681 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-01-12 09:17:26,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 09:17:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-01-12 09:17:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-12 09:17:26,682 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:26,682 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 09:17:26,682 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1049593954, now seen corresponding path program 1 times [2019-01-12 09:17:26,683 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:26,683 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 09:17:26,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:17:26,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:17:26,791 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 09:17:26,791 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:17:26,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:17:26,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:17:26,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:17:26,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:17:26,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:17:26,802 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2019-01-12 09:17:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:17:26,874 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2019-01-12 09:17:26,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:17:26,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-01-12 09:17:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:17:26,877 INFO L225 Difference]: With dead ends: 51 [2019-01-12 09:17:26,877 INFO L226 Difference]: Without dead ends: 42 [2019-01-12 09:17:26,877 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 09:17:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-01-12 09:17:26,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2019-01-12 09:17:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-01-12 09:17:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-01-12 09:17:26,889 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2019-01-12 09:17:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:17:26,890 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-01-12 09:17:26,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:17:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-01-12 09:17:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-12 09:17:26,891 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:17:26,891 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 09:17:26,891 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:17:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:17:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-01-12 09:17:26,892 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:17:26,892 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 09:17:26,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:17:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:17:27,346 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:17:27,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:17:27 BoogieIcfgContainer [2019-01-12 09:17:27,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:17:27,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:17:27,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:17:27,398 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:17:27,399 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 09:17:27,403 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-12 09:17:27,490 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 09:17:27,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:17:27,491 INFO L168 Benchmark]: Toolchain (without parser) took 5215.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 952.7 MB in the beginning and 840.4 MB in the end (delta: 112.3 MB). Peak memory consumption was 200.3 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,492 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 09:17:27,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.18 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 178.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -140.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,495 INFO L168 Benchmark]: Boogie Preprocessor took 59.54 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: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,495 INFO L168 Benchmark]: RCFGBuilder took 773.64 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,497 INFO L168 Benchmark]: TraceAbstraction took 3743.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 847.7 MB in the end (delta: 197.8 MB). Peak memory consumption was 197.8 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,497 INFO L168 Benchmark]: Witness Printer took 92.68 ms. Allocated memory is still 1.1 GB. Free memory was 847.7 MB in the beginning and 840.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-01-12 09:17:27,503 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 362.18 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 178.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -140.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.54 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: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 773.64 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3743.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 847.7 MB in the end (delta: 197.8 MB). Peak memory consumption was 197.8 MB. Max. memory is 11.5 GB. * Witness Printer took 92.68 ms. Allocated memory is still 1.1 GB. Free memory was 847.7 MB in the beginning and 840.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 3.6s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 326 SDtfs, 209 SDslu, 383 SDs, 0 SdLazy, 132 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s 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, 0.6s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 124 ConstructedInterpolants, 6 QuantifiedInterpolants, 5582 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...