/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb906b6dd506785279c111a847f91453236e370a --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................ 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb906b6dd506785279c111a847f91453236e370a --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:38:42,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:38:42,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:38:42,371 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:38:42,371 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:38:42,372 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:38:42,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:38:42,375 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:38:42,377 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:38:42,378 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:38:42,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:38:42,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:38:42,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:38:42,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:38:42,382 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:38:42,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:38:42,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:38:42,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:38:42,388 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:38:42,389 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:38:42,390 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:38:42,391 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:38:42,396 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:38:42,396 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:38:42,396 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:38:42,397 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:38:42,398 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:38:42,399 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:38:42,400 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:38:42,403 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:38:42,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:38:42,404 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:38:42,404 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:38:42,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:38:42,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:38:42,409 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:38:42,409 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:38:42,433 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:38:42,434 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:38:42,435 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:38:42,435 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:38:42,436 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:38:42,440 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:38:42,440 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:38:42,440 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:38:42,441 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:38:42,441 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:38:42,441 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:38:42,441 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:38:42,441 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:38:42,441 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:38:42,442 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:38:42,442 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:38:42,442 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:38:42,442 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:38:42,442 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:38:42,442 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:38:42,443 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:38:42,443 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:38:42,443 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:38:42,443 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:38:42,443 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:38:42,443 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:38:42,444 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:38:42,444 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:38:42,444 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:38:42,444 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 -> fb906b6dd506785279c111a847f91453236e370a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:38:42,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:38:42,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:38:42,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:38:42,517 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:38:42,518 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:38:42,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-09-21 18:38:42,892 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee4a062a/4fd9f484741d47c6b3ac6cb5a4af020f/FLAGdb62c535b [2018-09-21 18:38:43,090 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:38:43,091 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-09-21 18:38:43,107 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee4a062a/4fd9f484741d47c6b3ac6cb5a4af020f/FLAGdb62c535b [2018-09-21 18:38:43,134 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee4a062a/4fd9f484741d47c6b3ac6cb5a4af020f [2018-09-21 18:38:43,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:38:43,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:38:43,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:43,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:38:43,157 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:38:43,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc96d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43, skipping insertion in model container [2018-09-21 18:38:43,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,177 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:38:43,451 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:43,481 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:38:43,509 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:43,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43 WrapperNode [2018-09-21 18:38:43,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:43,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:38:43,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:38:43,555 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:38:43,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... [2018-09-21 18:38:43,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:38:43,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:38:43,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:38:43,633 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:38:43,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:38:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:38:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:38:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-09-21 18:38:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:38:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:38:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:38:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-09-21 18:38:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:38:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:38:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:38:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:38:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:38:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:38:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:38:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:38:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:38:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:38:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:38:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:38:44,463 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:38:44,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:44 BoogieIcfgContainer [2018-09-21 18:38:44,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:38:44,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:38:44,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:38:44,469 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:38:44,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:38:43" (1/3) ... [2018-09-21 18:38:44,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e434a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:44, skipping insertion in model container [2018-09-21 18:38:44,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:43" (2/3) ... [2018-09-21 18:38:44,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e434a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:44, skipping insertion in model container [2018-09-21 18:38:44,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:44" (3/3) ... [2018-09-21 18:38:44,473 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a_true-unreach-call.c [2018-09-21 18:38:44,484 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:38:44,494 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:38:44,536 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:38:44,537 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:38:44,537 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:38:44,537 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:38:44,537 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:38:44,537 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:38:44,538 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:38:44,538 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:38:44,538 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:38:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2018-09-21 18:38:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:38:44,569 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:44,570 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:44,573 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1386011199, now seen corresponding path program 1 times [2018-09-21 18:38:44,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:38:44,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:38:44,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:44,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:44,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:44,719 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:44,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:38:44,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:38:44,741 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:38:44,742 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:38:44,745 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2018-09-21 18:38:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:44,770 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-09-21 18:38:44,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:38:44,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:38:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:44,785 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:38:44,785 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:38:44,787 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:38:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:38:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:38:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:38:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:38:44,833 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 18 [2018-09-21 18:38:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:44,833 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:38:44,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:38:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:38:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:38:44,835 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:44,836 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:44,836 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:44,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1025521259, now seen corresponding path program 1 times [2018-09-21 18:38:44,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:38:44,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:38:44,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:44,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:44,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:38:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:38:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:38:44,982 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:38:45,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:38:45 BoogieIcfgContainer [2018-09-21 18:38:45,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:38:45,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:38:45,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:38:45,022 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:38:45,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:44" (3/4) ... [2018-09-21 18:38:45,027 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:38:45,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:38:45,028 INFO L168 Benchmark]: Toolchain (without parser) took 1887.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -124.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:45,031 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:38:45,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.08 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:45,034 INFO L168 Benchmark]: Boogie Preprocessor took 78.26 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:45,035 INFO L168 Benchmark]: RCFGBuilder took 831.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:45,036 INFO L168 Benchmark]: TraceAbstraction took 555.39 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:38:45,037 INFO L168 Benchmark]: Witness Printer took 6.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:38:45,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 406.08 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.26 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 831.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 555.39 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.37 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: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 76, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=2147483524, huge_ceil=1000000000000000000000000000000] [L76] float x = -0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L77] CALL, EXPR ceil_float(x) VAL [\old(x)=2147483526, huge_ceil=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=2147483526, huge_ceil=1000000000000000000000000000000, x=2147483526] [L17] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=2147483526, gf_u={2147483521:0}, huge_ceil=1000000000000000000000000000000, x=2147483526] [L18] FCALL gf_u.value = (x) VAL [\old(x)=2147483526, gf_u={2147483521:0}, huge_ceil=1000000000000000000000000000000, x=2147483526] [L19] EXPR, FCALL gf_u.word VAL [\old(x)=2147483526, gf_u={2147483521:0}, gf_u.word=3, huge_ceil=1000000000000000000000000000000, x=2147483526] [L19] (i0) = gf_u.word VAL [\old(x)=2147483526, gf_u={2147483521:0}, gf_u.word=3, huge_ceil=1000000000000000000000000000000, i0=3, x=2147483526] [L19] FCALL (i0) = gf_u.word VAL [(i0) = gf_u.word=2147483523, \old(x)=2147483526, gf_u={2147483521:0}, gf_u.word=3, huge_ceil=1000000000000000000000000000000, i0=3, x=2147483526] [L20] COND FALSE !(0) VAL [\old(x)=2147483526, huge_ceil=1000000000000000000000000000000, i0=3, x=2147483526] [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=2147483526, huge_ceil=1000000000000000000000000000000, i=-18014398509481985, i0=3, j0=2147483520, x=2147483526] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=2147483526, huge_ceil=1000000000000000000000000000000, i=-18014398509481985, i0=3, j0=2147483520, x=2147483526] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] RET return x + x; VAL [\old(x)=2147483526, huge_ceil=1000000000000000000000000000000, i=-18014398509481985, i0=3, j0=2147483520, x=2147483526] [L77] EXPR ceil_float(x) VAL [ceil_float(x)=2147483525, huge_ceil=1000000000000000000000000000000, x=2147483526] [L77] float res = ceil_float(x); [L80] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_ceil=1000000000000000000000000000000, res=2147483525, res == -0.0f && __signbit_float(res) == 1=0, x=2147483526] [L80] COND FALSE, EXPR !(res == -0.0f && __signbit_float(res) == 1) VAL [huge_ceil=1000000000000000000000000000000, res=2147483525, res == -0.0f && __signbit_float(res) == 1=0, x=2147483526] [L80] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L81] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000, res=2147483525, x=2147483526] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 67 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.23-5eb3fea [2018-09-21 18:38:47,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:38:47,487 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:38:47,499 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:38:47,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:38:47,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:38:47,502 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:38:47,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:38:47,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:38:47,506 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:38:47,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:38:47,508 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:38:47,509 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:38:47,510 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:38:47,511 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:38:47,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:38:47,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:38:47,518 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:38:47,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:38:47,527 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:38:47,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:38:47,533 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:38:47,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:38:47,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:38:47,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:38:47,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:38:47,546 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:38:47,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:38:47,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:38:47,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:38:47,551 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:38:47,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:38:47,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:38:47,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:38:47,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:38:47,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:38:47,557 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:38:47,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:38:47,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:38:47,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:38:47,591 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:38:47,592 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:38:47,592 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:38:47,592 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:38:47,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:38:47,593 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:38:47,594 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:38:47,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:38:47,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:38:47,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:38:47,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:38:47,595 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:38:47,595 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:38:47,595 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:38:47,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:38:47,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:38:47,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:38:47,596 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:38:47,596 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:38:47,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:38:47,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:38:47,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:38:47,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:38:47,597 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:38:47,599 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:38:47,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:38:47,599 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:38:47,599 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:38:47,600 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 -> fb906b6dd506785279c111a847f91453236e370a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:38:47,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:38:47,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:38:47,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:38:47,700 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:38:47,701 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:38:47,702 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-09-21 18:38:48,055 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dad0ff14/4b9be642d0be471bbb1d839cac675314/FLAGfce346ba2 [2018-09-21 18:38:48,251 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:38:48,252 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-09-21 18:38:48,260 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dad0ff14/4b9be642d0be471bbb1d839cac675314/FLAGfce346ba2 [2018-09-21 18:38:48,278 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dad0ff14/4b9be642d0be471bbb1d839cac675314 [2018-09-21 18:38:48,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:38:48,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:38:48,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:48,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:38:48,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:38:48,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2242d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48, skipping insertion in model container [2018-09-21 18:38:48,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,309 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:38:48,535 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:48,556 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:38:48,575 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:38:48,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48 WrapperNode [2018-09-21 18:38:48,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:38:48,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:38:48,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:38:48,609 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:38:48,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... [2018-09-21 18:38:48,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:38:48,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:38:48,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:38:48,690 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:38:48,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:38:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:38:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:38:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-09-21 18:38:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:38:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:38:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:38:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-09-21 18:38:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:38:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:38:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:38:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:38:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:38:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:38:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:38:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:38:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:38:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:38:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:38:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:38:49,558 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:38:49,591 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:38:49,900 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:38:49,911 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:38:49,920 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:38:49,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:49 BoogieIcfgContainer [2018-09-21 18:38:49,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:38:49,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:38:49,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:38:49,926 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:38:49,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:38:48" (1/3) ... [2018-09-21 18:38:49,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2712d309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:49, skipping insertion in model container [2018-09-21 18:38:49,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:38:48" (2/3) ... [2018-09-21 18:38:49,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2712d309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:38:49, skipping insertion in model container [2018-09-21 18:38:49,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:49" (3/3) ... [2018-09-21 18:38:49,930 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a_true-unreach-call.c [2018-09-21 18:38:49,940 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:38:49,949 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:38:49,989 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:38:49,989 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:38:49,990 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:38:49,990 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:38:49,990 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:38:49,990 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:38:49,990 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:38:49,991 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:38:49,991 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:38:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2018-09-21 18:38:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:38:50,021 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:50,023 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:50,025 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1386011199, now seen corresponding path program 1 times [2018-09-21 18:38:50,038 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:50,038 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:38:50,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:50,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:50,150 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:50,167 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:50,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:38:50,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:38:50,184 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:38:50,185 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:38:50,187 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2018-09-21 18:38:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:50,211 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-09-21 18:38:50,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:38:50,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:38:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:50,226 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:38:50,226 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:38:50,228 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:38:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:38:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:38:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:38:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:38:50,277 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 18 [2018-09-21 18:38:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:50,277 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:38:50,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:38:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:38:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:38:50,279 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:50,279 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:50,279 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1025521259, now seen corresponding path program 1 times [2018-09-21 18:38:50,280 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:50,280 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:38:50,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:38:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:50,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:50,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:38:50,588 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:38:50,588 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:38:50,616 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:50,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:50,700 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:38:50,780 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:38:50,797 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:38:50,797 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:38:50,820 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:50,829 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:50,829 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:38:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:51,169 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:51,186 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:51,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:38:51,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:38:51,192 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:38:51,193 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:38:51,194 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 9 states. [2018-09-21 18:38:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:53,946 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2018-09-21 18:38:53,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:38:53,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-09-21 18:38:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:53,952 INFO L225 Difference]: With dead ends: 81 [2018-09-21 18:38:53,952 INFO L226 Difference]: Without dead ends: 78 [2018-09-21 18:38:53,953 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-09-21 18:38:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-21 18:38:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2018-09-21 18:38:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-21 18:38:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2018-09-21 18:38:53,964 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 27 [2018-09-21 18:38:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:53,964 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2018-09-21 18:38:53,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:38:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2018-09-21 18:38:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-21 18:38:53,966 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:53,966 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:53,966 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:53,967 INFO L82 PathProgramCache]: Analyzing trace with hash 297883690, now seen corresponding path program 1 times [2018-09-21 18:38:53,967 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:53,967 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:38:53,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:38:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:54,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:54,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:38:54,112 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:38:54,113 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:38:54,118 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:54,130 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:54,131 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:38:54,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:38:54,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:38:54,168 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:38:54,175 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:54,177 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:38:54,178 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:38:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:54,318 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:54,331 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:54,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:38:54,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:38:54,332 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:38:54,333 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:38:54,333 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 9 states. [2018-09-21 18:38:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:38:56,364 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2018-09-21 18:38:56,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-21 18:38:56,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-21 18:38:56,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:38:56,369 INFO L225 Difference]: With dead ends: 104 [2018-09-21 18:38:56,369 INFO L226 Difference]: Without dead ends: 71 [2018-09-21 18:38:56,370 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-09-21 18:38:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-21 18:38:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2018-09-21 18:38:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-21 18:38:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2018-09-21 18:38:56,378 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 28 [2018-09-21 18:38:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:38:56,379 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2018-09-21 18:38:56,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:38:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2018-09-21 18:38:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-21 18:38:56,382 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:38:56,382 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:38:56,382 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:38:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1843158972, now seen corresponding path program 1 times [2018-09-21 18:38:56,383 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:38:56,384 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:38:56,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:38:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:38:56,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:38:58,068 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-21 18:38:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:38:58,100 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:38:58,115 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:38:58,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-21 18:38:58,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-21 18:38:58,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-21 18:38:58,116 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:38:58,116 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2018-09-21 18:39:00,180 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-21 18:39:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:00,676 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-09-21 18:39:00,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-21 18:39:00,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-09-21 18:39:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:00,678 INFO L225 Difference]: With dead ends: 71 [2018-09-21 18:39:00,679 INFO L226 Difference]: Without dead ends: 58 [2018-09-21 18:39:00,679 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-21 18:39:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-21 18:39:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-21 18:39:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-21 18:39:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-09-21 18:39:00,686 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 39 [2018-09-21 18:39:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:00,687 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-09-21 18:39:00,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-21 18:39:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-09-21 18:39:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:39:00,688 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:00,688 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:00,689 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:00,689 INFO L82 PathProgramCache]: Analyzing trace with hash -638208933, now seen corresponding path program 1 times [2018-09-21 18:39:00,689 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:00,690 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:00,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:00,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:00,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:39:00,798 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:39:00,798 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:00,801 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:00,803 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:00,803 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-09-21 18:39:00,827 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-09-21 18:39:00,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 6 [2018-09-21 18:39:00,832 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:00,844 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:00,848 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:00,848 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:6 [2018-09-21 18:39:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:00,935 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:00,945 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:00,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:39:00,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:39:00,946 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:39:00,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:39:00,947 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 9 states. [2018-09-21 18:39:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:01,303 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2018-09-21 18:39:01,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:39:01,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-09-21 18:39:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:01,304 INFO L225 Difference]: With dead ends: 73 [2018-09-21 18:39:01,305 INFO L226 Difference]: Without dead ends: 73 [2018-09-21 18:39:01,305 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:39:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-21 18:39:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-21 18:39:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-21 18:39:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-09-21 18:39:01,314 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 40 [2018-09-21 18:39:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:01,314 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-09-21 18:39:01,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:39:01,315 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-09-21 18:39:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-21 18:39:01,316 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:01,316 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:01,317 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash -723773306, now seen corresponding path program 1 times [2018-09-21 18:39:01,317 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:01,317 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:01,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:01,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:01,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:39:01,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:39:01,433 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:01,438 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:01,450 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:01,452 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:39:01,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:39:01,487 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:39:01,487 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:01,494 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:01,497 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:01,497 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:39:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:01,591 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:01,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:01,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:39:01,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:39:01,608 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:39:01,608 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:39:01,608 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 8 states. [2018-09-21 18:39:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:02,566 INFO L93 Difference]: Finished difference Result 84 states and 83 transitions. [2018-09-21 18:39:02,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:39:02,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-09-21 18:39:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:02,569 INFO L225 Difference]: With dead ends: 84 [2018-09-21 18:39:02,569 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:39:02,570 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:39:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:39:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:39:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:39:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 56 transitions. [2018-09-21 18:39:02,577 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 56 transitions. Word has length 41 [2018-09-21 18:39:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:02,577 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 56 transitions. [2018-09-21 18:39:02,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:39:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 56 transitions. [2018-09-21 18:39:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:39:02,579 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:39:02,579 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:39:02,579 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:39:02,580 INFO L82 PathProgramCache]: Analyzing trace with hash 993308702, now seen corresponding path program 1 times [2018-09-21 18:39:02,580 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:39:02,580 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:39:02,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:39:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:39:02,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:39:02,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:39:02,713 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:39:02,713 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,719 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,722 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,722 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-09-21 18:39:02,736 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-09-21 18:39:02,746 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 6 [2018-09-21 18:39:02,746 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,750 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,755 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,755 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:6 [2018-09-21 18:39:02,917 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:39:02,922 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:39:02,922 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,926 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,936 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,937 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:39:02,972 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:39:02,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:39:02,978 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,980 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,984 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:39:02,985 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:39:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:39:03,258 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:39:03,268 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:39:03,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-21 18:39:03,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-21 18:39:03,269 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-21 18:39:03,269 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:39:03,270 INFO L87 Difference]: Start difference. First operand 57 states and 56 transitions. Second operand 16 states. [2018-09-21 18:39:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:39:04,434 INFO L93 Difference]: Finished difference Result 55 states and 54 transitions. [2018-09-21 18:39:04,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-21 18:39:04,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2018-09-21 18:39:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:39:04,437 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:39:04,437 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:39:04,439 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2018-09-21 18:39:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:39:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:39:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:39:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:39:04,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2018-09-21 18:39:04,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:39:04,440 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:39:04,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-21 18:39:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:39:04,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:39:04,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:39:04 BoogieIcfgContainer [2018-09-21 18:39:04,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:39:04,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:39:04,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:39:04,448 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:39:04,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:38:49" (3/4) ... [2018-09-21 18:39:04,452 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:39:04,459 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:39:04,459 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:39:04,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_float [2018-09-21 18:39:04,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-21 18:39:04,465 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-09-21 18:39:04,466 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-21 18:39:04,466 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:39:04,530 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:39:04,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:39:04,532 INFO L168 Benchmark]: Toolchain (without parser) took 16248.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -164.4 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:04,534 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:04,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:04,535 INFO L168 Benchmark]: Boogie Preprocessor took 78.71 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:04,535 INFO L168 Benchmark]: RCFGBuilder took 1231.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:04,537 INFO L168 Benchmark]: TraceAbstraction took 14524.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 71.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:39:04,538 INFO L168 Benchmark]: Witness Printer took 83.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:39:04,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.71 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1231.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14524.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 71.4 MB. Max. memory is 11.5 GB. * Witness Printer took 83.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 67 locations, 1 error locations. SAFE Result, 14.4s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 407 SDtfs, 420 SDslu, 1918 SDs, 0 SdLazy, 656 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=5, 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, 7 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 242 ConstructedInterpolants, 25 QuantifiedInterpolants, 62271 SizeOfPredicates, 49 NumberOfNonLiveVariables, 509 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...