/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d_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/double_req_bl_1032d_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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 --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/double_req_bl_1032d_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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 --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 18:10:26,576 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:10:26,578 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:10:26,590 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:10:26,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:10:26,592 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:10:26,593 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:10:26,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:10:26,597 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:10:26,598 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:10:26,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:10:26,599 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:10:26,600 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:10:26,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:10:26,602 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:10:26,603 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:10:26,604 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:10:26,606 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:10:26,609 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:10:26,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:10:26,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:10:26,613 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:10:26,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:10:26,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:10:26,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:10:26,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:10:26,619 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:10:26,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:10:26,620 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:10:26,625 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:10:26,625 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:10:26,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:10:26,626 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:10:26,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:10:26,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:10:26,629 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:10:26,629 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:10:26,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:10:26,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:10:26,665 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:10:26,665 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:10:26,667 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:10:26,667 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:10:26,668 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:10:26,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:10:26,668 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:10:26,669 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:10:26,669 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:10:26,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:10:26,670 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:10:26,670 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:10:26,670 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:10:26,670 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:10:26,670 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:10:26,671 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:10:26,671 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:10:26,671 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:10:26,671 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:10:26,671 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:10:26,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:10:26,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:10:26,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:10:26,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:10:26,673 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:10:26,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:10:26,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:10:26,674 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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 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 18:10:26,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:10:26,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:10:26,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:10:26,765 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:10:26,765 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:10:26,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d_true-unreach-call.c [2018-09-21 18:10:27,146 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48621ffc2/3ecc1cf349414176a17fe1f66d05a063/FLAGb46611047 [2018-09-21 18:10:27,352 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:10:27,354 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032d_true-unreach-call.c [2018-09-21 18:10:27,365 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48621ffc2/3ecc1cf349414176a17fe1f66d05a063/FLAGb46611047 [2018-09-21 18:10:27,381 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48621ffc2/3ecc1cf349414176a17fe1f66d05a063 [2018-09-21 18:10:27,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:10:27,388 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:10:27,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:27,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:10:27,397 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:10:27,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377dc6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27, skipping insertion in model container [2018-09-21 18:10:27,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,415 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:10:27,692 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:27,708 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:10:27,738 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:27,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27 WrapperNode [2018-09-21 18:10:27,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:27,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:10:27,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:10:27,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:10:27,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (1/1) ... [2018-09-21 18:10:27,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:10:27,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:10:27,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:10:27,849 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:10:27,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (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 18:10:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:10:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:10:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-09-21 18:10:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-09-21 18:10:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-09-21 18:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:10:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:10:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:10:28,648 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:10:28,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:28 BoogieIcfgContainer [2018-09-21 18:10:28,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:10:28,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:10:28,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:10:28,654 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:10:28,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:10:27" (1/3) ... [2018-09-21 18:10:28,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd7504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:28, skipping insertion in model container [2018-09-21 18:10:28,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:27" (2/3) ... [2018-09-21 18:10:28,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd7504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:28, skipping insertion in model container [2018-09-21 18:10:28,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:28" (3/3) ... [2018-09-21 18:10:28,658 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d_true-unreach-call.c [2018-09-21 18:10:28,668 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:10:28,677 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:10:28,721 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:10:28,722 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:10:28,722 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:10:28,722 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:10:28,723 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:10:28,723 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:10:28,723 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:10:28,723 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:10:28,724 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:10:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-09-21 18:10:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-21 18:10:28,754 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:28,755 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] [2018-09-21 18:10:28,758 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash -79699813, now seen corresponding path program 1 times [2018-09-21 18:10:28,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:10:28,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:10:28,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:28,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:28,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:28,927 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 18:10:28,930 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:28,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:10:28,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:10:28,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:10:28,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:10:28,954 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2018-09-21 18:10:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:28,980 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2018-09-21 18:10:28,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:10:28,981 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-09-21 18:10:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:28,993 INFO L225 Difference]: With dead ends: 76 [2018-09-21 18:10:28,993 INFO L226 Difference]: Without dead ends: 72 [2018-09-21 18:10:28,995 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 18:10:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-21 18:10:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-09-21 18:10:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-21 18:10:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2018-09-21 18:10:29,048 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 25 [2018-09-21 18:10:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:29,049 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2018-09-21 18:10:29,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:10:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2018-09-21 18:10:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-21 18:10:29,056 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:29,057 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] [2018-09-21 18:10:29,058 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash -232877713, now seen corresponding path program 1 times [2018-09-21 18:10:29,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:10:29,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:10:29,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:29,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:29,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:10:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:10:29,324 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:10:29,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:10:29 BoogieIcfgContainer [2018-09-21 18:10:29,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:10:29,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:10:29,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:10:29,368 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:10:29,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:28" (3/4) ... [2018-09-21 18:10:29,373 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:10:29,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:10:29,374 INFO L168 Benchmark]: Toolchain (without parser) took 1988.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:29,376 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 18:10:29,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:29,377 INFO L168 Benchmark]: Boogie Preprocessor took 68.10 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:29,378 INFO L168 Benchmark]: RCFGBuilder took 801.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:29,379 INFO L168 Benchmark]: TraceAbstraction took 716.56 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:29,380 INFO L168 Benchmark]: Witness Printer took 5.27 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 18:10:29,384 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 389.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.10 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 801.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 716.56 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.27 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: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=6442450947] [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; VAL [\old(x)=6442450947, x=6442450947] [L18] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=6442450947, ew_u={6442450952:0}, x=6442450947] [L19] FCALL ew_u.value = (x) VAL [\old(x)=6442450947, ew_u={6442450952:0}, x=6442450947] [L20] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=6442450947, ew_u={6442450952:0}, ew_u.parts.msw=3, x=6442450947] [L20] (msw) = ew_u.parts.msw VAL [\old(x)=6442450947, ew_u={6442450952:0}, ew_u.parts.msw=3, msw=3, x=6442450947] [L20] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=6442450945, \old(x)=6442450947, ew_u={6442450952:0}, ew_u.parts.msw=3, msw=3, x=6442450947] [L21] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=6442450947, ew_u={6442450952:0}, ew_u.parts.lsw=-4294967296, msw=3, x=6442450947] [L21] (lsw) = ew_u.parts.lsw VAL [\old(x)=6442450947, ew_u={6442450952:0}, ew_u.parts.lsw=-4294967296, lsw=0, msw=3, x=6442450947] [L21] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=6442450948, \old(x)=6442450947, ew_u={6442450952:0}, ew_u.parts.lsw=-4294967296, lsw=0, msw=3, x=6442450947] [L22] COND FALSE !(0) VAL [\old(x)=6442450947, lsw=0, msw=3, x=6442450947] [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=6442450947, exponent_less_1023=0, lsw=0, msw=3, x=6442450947] [L24] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=6442450947, exponent_less_1023=0, lsw=0, msw=3, x=6442450947] [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=6442450947, exponent_less_1023=0, lsw=0, msw=3, x=6442450947] [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] RET return x; VAL [\old(x)=6442450947, \result=6442450947, exponent_less_1023=0, lsw=0, msw=3, x=6442450947] [L87] EXPR round_double(x) VAL [round_double(x)=6442450947, x=6442450947] [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=6442450947] [L65] __int32_t hx, lx; VAL [\old(x)=6442450947, x=6442450947] [L67] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=6442450947, ew_u={6442450949:0}, x=6442450947] [L68] FCALL ew_u.value = (x) VAL [\old(x)=6442450947, ew_u={6442450949:0}, x=6442450947] [L69] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=6442450947, ew_u={6442450949:0}, ew_u.parts.msw=6442450944, x=6442450947] [L69] (hx) = ew_u.parts.msw VAL [\old(x)=6442450947, ew_u={6442450949:0}, ew_u.parts.msw=6442450944, hx=-2147483648, x=6442450947] [L69] FCALL (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=6442450951, \old(x)=6442450947, ew_u={6442450949:0}, ew_u.parts.msw=6442450944, hx=-2147483648, x=6442450947] [L70] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=6442450947, ew_u={6442450949:0}, ew_u.parts.lsw=-6442450944, hx=-2147483648, x=6442450947] [L70] (lx) = ew_u.parts.lsw VAL [\old(x)=6442450947, ew_u={6442450949:0}, ew_u.parts.lsw=-6442450944, hx=-2147483648, lx=-2147483648, x=6442450947] [L70] FCALL (lx) = ew_u.parts.lsw VAL [(lx) = ew_u.parts.lsw=6442450950, \old(x)=6442450947, ew_u={6442450949:0}, ew_u.parts.lsw=-6442450944, hx=-2147483648, lx=-2147483648, x=6442450947] [L71] COND FALSE !(0) VAL [\old(x)=6442450947, hx=-2147483648, lx=-2147483648, x=6442450947] [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] RET return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=6442450947, \result=0, hx=2146435073, lx=-2147483648, x=6442450947] [L90] EXPR isinf_double(res) VAL [isinf_double(res)=0, res=6442450947, x=6442450947] [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() VAL [res=6442450947, x=6442450947] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 76 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 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=76occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 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 18:10:31,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:10:31,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:10:31,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:10:31,807 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:10:31,808 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:10:31,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:10:31,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:10:31,813 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:10:31,814 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:10:31,815 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:10:31,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:10:31,816 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:10:31,817 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:10:31,819 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:10:31,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:10:31,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:10:31,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:10:31,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:10:31,826 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:10:31,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:10:31,829 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:10:31,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:10:31,832 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:10:31,832 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:10:31,833 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:10:31,834 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:10:31,835 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:10:31,836 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:10:31,837 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:10:31,838 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:10:31,838 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:10:31,839 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:10:31,839 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:10:31,840 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:10:31,841 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:10:31,841 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:10:31,865 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:10:31,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:10:31,866 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:10:31,867 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:10:31,867 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:10:31,868 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:10:31,869 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:10:31,869 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:10:31,869 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:10:31,869 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:10:31,869 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:10:31,870 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:10:31,870 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:10:31,870 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:10:31,870 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:10:31,870 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:10:31,871 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:10:31,871 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:10:31,871 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:10:31,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:10:31,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:10:31,872 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:10:31,872 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:10:31,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:10:31,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:10:31,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:10:31,873 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:10:31,873 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:10:31,873 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:10:31,874 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:10:31,874 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:10:31,874 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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 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 18:10:31,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:10:31,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:10:31,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:10:31,972 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:10:31,973 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:10:31,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d_true-unreach-call.c [2018-09-21 18:10:32,339 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3e09070/19d6c006e94b43ddad85b9e42d3243cc/FLAGf8f67dfd2 [2018-09-21 18:10:32,515 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:10:32,516 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032d_true-unreach-call.c [2018-09-21 18:10:32,525 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3e09070/19d6c006e94b43ddad85b9e42d3243cc/FLAGf8f67dfd2 [2018-09-21 18:10:32,543 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3e09070/19d6c006e94b43ddad85b9e42d3243cc [2018-09-21 18:10:32,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:10:32,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:10:32,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:32,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:10:32,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:10:32,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2fa6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32, skipping insertion in model container [2018-09-21 18:10:32,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,580 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:10:32,818 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:32,838 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:10:32,867 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:32,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32 WrapperNode [2018-09-21 18:10:32,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:32,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:10:32,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:10:32,909 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:10:32,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (1/1) ... [2018-09-21 18:10:32,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:10:32,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:10:32,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:10:32,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:10:32,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (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 18:10:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:10:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:10:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-09-21 18:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-09-21 18:10:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:10:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:10:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-09-21 18:10:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-09-21 18:10:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:10:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:10:33,392 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:33,441 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:33,502 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:33,717 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:33,741 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:33,764 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:33,982 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:10:33,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:33 BoogieIcfgContainer [2018-09-21 18:10:33,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:10:33,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:10:33,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:10:33,987 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:10:33,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:10:32" (1/3) ... [2018-09-21 18:10:33,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508d1fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:33, skipping insertion in model container [2018-09-21 18:10:33,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:32" (2/3) ... [2018-09-21 18:10:33,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508d1fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:33, skipping insertion in model container [2018-09-21 18:10:33,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:33" (3/3) ... [2018-09-21 18:10:33,991 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d_true-unreach-call.c [2018-09-21 18:10:34,001 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:10:34,008 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:10:34,050 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:10:34,051 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:10:34,051 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:10:34,051 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:10:34,052 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:10:34,052 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:10:34,053 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:10:34,053 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:10:34,053 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:10:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-09-21 18:10:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-21 18:10:34,084 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:34,086 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] [2018-09-21 18:10:34,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash 483931145, now seen corresponding path program 1 times [2018-09-21 18:10:34,100 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:34,101 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 18:10:34,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:34,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:34,201 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 18:10:34,201 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:34,227 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:34,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:10:34,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:10:34,249 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:10:34,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:10:34,256 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 2 states. [2018-09-21 18:10:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:34,277 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2018-09-21 18:10:34,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:10:34,279 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-21 18:10:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:34,292 INFO L225 Difference]: With dead ends: 75 [2018-09-21 18:10:34,292 INFO L226 Difference]: Without dead ends: 71 [2018-09-21 18:10:34,294 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:10:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-21 18:10:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-21 18:10:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-21 18:10:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2018-09-21 18:10:34,347 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 24 [2018-09-21 18:10:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:34,349 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2018-09-21 18:10:34,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:10:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2018-09-21 18:10:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:10:34,354 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:34,355 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] [2018-09-21 18:10:34,355 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:34,356 INFO L82 PathProgramCache]: Analyzing trace with hash 287017234, now seen corresponding path program 1 times [2018-09-21 18:10:34,357 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:34,359 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) [2018-09-21 18:10:34,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:34,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:34,630 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 14 treesize of output 11 [2018-09-21 18:10:34,636 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 11 treesize of output 10 [2018-09-21 18:10:34,636 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:34,642 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:34,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:34,667 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:34,751 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 20 treesize of output 16 [2018-09-21 18:10:34,768 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 16 treesize of output 4 [2018-09-21 18:10:34,769 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:34,795 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:34,876 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:34,877 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:35,458 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 18:10:35,458 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:35,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:35,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:10:35,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:10:35,478 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:10:35,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:10:35,479 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 9 states. [2018-09-21 18:10:36,883 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-21 18:10:37,297 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-21 18:10:38,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:38,628 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2018-09-21 18:10:38,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:10:38,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-09-21 18:10:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:38,633 INFO L225 Difference]: With dead ends: 106 [2018-09-21 18:10:38,633 INFO L226 Difference]: Without dead ends: 85 [2018-09-21 18:10:38,635 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-09-21 18:10:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-21 18:10:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2018-09-21 18:10:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-21 18:10:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2018-09-21 18:10:38,646 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 50 [2018-09-21 18:10:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:38,647 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2018-09-21 18:10:38,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:10:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2018-09-21 18:10:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:10:38,650 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:38,650 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] [2018-09-21 18:10:38,650 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:38,651 INFO L82 PathProgramCache]: Analyzing trace with hash 749742405, now seen corresponding path program 1 times [2018-09-21 18:10:38,652 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:38,652 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:38,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:38,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:38,785 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 14 treesize of output 11 [2018-09-21 18:10:38,790 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 11 treesize of output 10 [2018-09-21 18:10:38,791 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:38,796 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:38,816 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:38,817 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:38,881 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 20 treesize of output 16 [2018-09-21 18:10:38,892 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 16 treesize of output 4 [2018-09-21 18:10:38,893 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:38,897 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:38,908 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:38,909 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:39,211 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 18:10:39,211 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:39,226 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:39,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:10:39,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:10:39,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:10:39,228 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:10:39,228 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 9 states. [2018-09-21 18:10:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:41,895 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-09-21 18:10:41,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:10:41,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-09-21 18:10:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:41,899 INFO L225 Difference]: With dead ends: 87 [2018-09-21 18:10:41,899 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:10:41,900 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-09-21 18:10:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:10:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:10:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:10:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-21 18:10:41,907 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 50 [2018-09-21 18:10:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:41,908 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-21 18:10:41,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:10:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-21 18:10:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:10:41,911 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:41,911 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] [2018-09-21 18:10:41,911 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash 313546150, now seen corresponding path program 1 times [2018-09-21 18:10:41,912 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:41,913 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:41,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:42,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:42,053 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 14 treesize of output 11 [2018-09-21 18:10:42,062 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 11 treesize of output 10 [2018-09-21 18:10:42,062 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:42,089 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:42,116 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:42,116 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:42,158 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 20 treesize of output 16 [2018-09-21 18:10:42,163 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 16 treesize of output 4 [2018-09-21 18:10:42,164 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:42,168 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:42,179 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:42,180 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:42,401 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 18:10:42,401 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:42,413 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:42,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:10:42,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:10:42,414 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:10:42,414 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:10:42,417 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 9 states. [2018-09-21 18:10:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:44,039 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2018-09-21 18:10:44,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:10:44,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-09-21 18:10:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:44,042 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:10:44,042 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:10:44,043 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:10:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:10:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:10:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:10:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2018-09-21 18:10:44,049 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 50 [2018-09-21 18:10:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:44,050 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2018-09-21 18:10:44,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:10:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2018-09-21 18:10:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-21 18:10:44,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:44,053 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] [2018-09-21 18:10:44,054 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1904211803, now seen corresponding path program 1 times [2018-09-21 18:10:44,054 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:44,055 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 18:10:44,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:44,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:45,088 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:10:45,089 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:10:45,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-21 18:10:45,133 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:45,149 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-21 18:10:45,150 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:45,174 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:45,196 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:45,197 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-21 18:10:46,023 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:10:46,024 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:10:46,025 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-21 18:10:46,036 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:46,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-21 18:10:46,054 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:46,087 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:46,121 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:46,122 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-21 18:10:46,403 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 35 treesize of output 27 [2018-09-21 18:10:46,438 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:46,463 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-21 18:10:46,463 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:46,521 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:46,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:46,537 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-21 18:10:47,762 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 18:10:47,763 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:47,774 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:47,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-21 18:10:47,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-21 18:10:47,775 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-21 18:10:47,776 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:10:47,776 INFO L87 Difference]: Start difference. First operand 51 states and 50 transitions. Second operand 15 states. [2018-09-21 18:10:49,863 WARN L178 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-21 18:10:53,600 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-21 18:10:54,209 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-21 18:10:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:55,364 INFO L93 Difference]: Finished difference Result 49 states and 48 transitions. [2018-09-21 18:10:55,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-21 18:10:55,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2018-09-21 18:10:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:55,365 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:10:55,365 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:10:55,366 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2018-09-21 18:10:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:10:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:10:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:10:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:10:55,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2018-09-21 18:10:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:55,368 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:10:55,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-21 18:10:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:10:55,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:10:55,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:10:55 BoogieIcfgContainer [2018-09-21 18:10:55,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:10:55,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:10:55,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:10:55,374 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:10:55,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:33" (3/4) ... [2018-09-21 18:10:55,379 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:10:55,386 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:10:55,386 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isinf_double [2018-09-21 18:10:55,387 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-09-21 18:10:55,387 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:10:55,393 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:10:55,394 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-09-21 18:10:55,394 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:10:55,502 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:10:55,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:10:55,503 INFO L168 Benchmark]: Toolchain (without parser) took 22954.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:55,507 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 18:10:55,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.90 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:55,508 INFO L168 Benchmark]: Boogie Preprocessor took 82.35 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:55,508 INFO L168 Benchmark]: RCFGBuilder took 990.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:55,511 INFO L168 Benchmark]: TraceAbstraction took 21389.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.2 MB). Peak memory consumption was 65.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:55,512 INFO L168 Benchmark]: Witness Printer took 127.93 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 18:10:55,517 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 354.90 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.35 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 990.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21389.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.2 MB). Peak memory consumption was 65.3 MB. Max. memory is 11.5 GB. * Witness Printer took 127.93 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: 91]: 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, 75 locations, 1 error locations. SAFE Result, 21.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 15.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 287 SDtfs, 308 SDslu, 1229 SDs, 0 SdLazy, 522 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 219 ConstructedInterpolants, 66 QuantifiedInterpolants, 80203 SizeOfPredicates, 35 NumberOfNonLiveVariables, 459 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...