/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8159dcd6ea2bf26836c04d37f0678d0278270cd7 ......................................................................................................................................................................................................................................................................................................................................................................................... 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_1250_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8159dcd6ea2bf26836c04d37f0678d0278270cd7 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:06:11,674 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:06:11,678 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:06:11,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:06:11,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:06:11,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:06:11,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:06:11,697 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:06:11,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:06:11,699 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:06:11,700 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:06:11,700 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:06:11,701 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:06:11,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:06:11,703 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:06:11,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:06:11,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:06:11,707 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:06:11,708 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:06:11,710 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:06:11,711 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:06:11,712 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:06:11,714 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:06:11,715 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:06:11,715 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:06:11,716 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:06:11,717 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:06:11,718 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:06:11,718 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:06:11,720 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:06:11,720 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:06:11,720 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:06:11,721 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:06:11,721 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:06:11,722 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:06:11,723 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:06:11,723 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:06:11,743 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:06:11,744 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:06:11,745 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:06:11,745 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:06:11,745 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:06:11,746 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:06:11,746 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:06:11,746 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:06:11,746 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:06:11,746 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:06:11,746 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:06:11,747 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:06:11,747 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:06:11,747 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:06:11,747 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:06:11,747 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:06:11,747 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:06:11,748 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:06:11,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:06:11,748 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:06:11,748 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:06:11,748 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:06:11,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:11,749 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:06:11,749 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:06:11,749 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:06:11,749 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:06:11,749 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:06:11,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:06:11,750 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 -> 8159dcd6ea2bf26836c04d37f0678d0278270cd7 [2018-09-20 15:06:11,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:06:11,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:06:11,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:06:11,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:06:11,844 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:06:11,845 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-20 15:06:12,188 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fd212d0/6196c8fcb2854535845a462ca7128d14/FLAG6c7a3832d [2018-09-20 15:06:12,329 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:06:12,330 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-20 15:06:12,340 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fd212d0/6196c8fcb2854535845a462ca7128d14/FLAG6c7a3832d [2018-09-20 15:06:12,356 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fd212d0/6196c8fcb2854535845a462ca7128d14 [2018-09-20 15:06:12,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:06:12,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:06:12,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:12,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:06:12,370 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:06:12,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bd2d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12, skipping insertion in model container [2018-09-20 15:06:12,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,386 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:06:12,646 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:12,667 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:06:12,692 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:12,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12 WrapperNode [2018-09-20 15:06:12,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:12,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:06:12,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:06:12,722 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:06:12,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (1/1) ... [2018-09-20 15:06:12,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:06:12,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:06:12,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:06:12,768 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:06:12,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (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 [2018-09-20 15:06:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:06:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:06:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-20 15:06:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:06:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-20 15:06:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:06:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:06:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:06:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-20 15:06:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:06:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:06:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:06:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:06:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:06:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:06:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:06:13,666 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:06:13,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:13 BoogieIcfgContainer [2018-09-20 15:06:13,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:06:13,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:06:13,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:06:13,672 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:06:13,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:06:12" (1/3) ... [2018-09-20 15:06:13,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0cf9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:13, skipping insertion in model container [2018-09-20 15:06:13,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:12" (2/3) ... [2018-09-20 15:06:13,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0cf9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:13, skipping insertion in model container [2018-09-20 15:06:13,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:13" (3/3) ... [2018-09-20 15:06:13,675 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-09-20 15:06:13,686 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:06:13,695 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:06:13,742 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:06:13,743 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:06:13,743 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:06:13,743 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:06:13,743 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:06:13,744 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:06:13,744 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:06:13,744 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:06:13,744 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:06:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-09-20 15:06:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-20 15:06:13,772 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:13,773 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] [2018-09-20 15:06:13,776 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1478379436, now seen corresponding path program 1 times [2018-09-20 15:06:13,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:13,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:13,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:13,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:13,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:13,931 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:13,932 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:06:13,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:06:13,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:06:13,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:13,955 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-09-20 15:06:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:13,984 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2018-09-20 15:06:13,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:06:13,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-20 15:06:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:13,997 INFO L225 Difference]: With dead ends: 95 [2018-09-20 15:06:13,998 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:06:14,002 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 [2018-09-20 15:06:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:06:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:06:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-20 15:06:14,050 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 26 [2018-09-20 15:06:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:14,051 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-20 15:06:14,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:06:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-20 15:06:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-20 15:06:14,054 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:14,054 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:14,054 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:14,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1444730554, now seen corresponding path program 1 times [2018-09-20 15:06:14,055 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:14,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:14,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:14,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:14,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:14,206 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:14,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:14,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:14,209 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:14,209 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:14,209 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-20 15:06:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:14,319 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2018-09-20 15:06:14,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:14,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-20 15:06:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:14,324 INFO L225 Difference]: With dead ends: 63 [2018-09-20 15:06:14,324 INFO L226 Difference]: Without dead ends: 52 [2018-09-20 15:06:14,325 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-20 15:06:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-20 15:06:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-20 15:06:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-20 15:06:14,342 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 39 [2018-09-20 15:06:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:14,343 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-20 15:06:14,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-20 15:06:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-20 15:06:14,345 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:14,345 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] [2018-09-20 15:06:14,345 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1187184737, now seen corresponding path program 1 times [2018-09-20 15:06:14,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:14,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:14,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:14,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:14,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:14,489 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:14,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:14,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:14,490 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:14,490 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:14,491 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 4 states. [2018-09-20 15:06:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:14,595 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-09-20 15:06:14,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:14,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-20 15:06:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:14,597 INFO L225 Difference]: With dead ends: 67 [2018-09-20 15:06:14,597 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:06:14,598 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:06:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-09-20 15:06:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-20 15:06:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-20 15:06:14,612 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 42 [2018-09-20 15:06:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:14,612 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-20 15:06:14,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-20 15:06:14,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-20 15:06:14,614 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:14,615 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] [2018-09-20 15:06:14,616 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:14,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1600230750, now seen corresponding path program 1 times [2018-09-20 15:06:14,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:14,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:14,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:14,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:14,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:06:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:06:14,718 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:06:14,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:06:14 BoogieIcfgContainer [2018-09-20 15:06:14,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:06:14,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:06:14,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:06:14,759 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:06:14,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:13" (3/4) ... [2018-09-20 15:06:14,764 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:06:14,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:06:14,765 INFO L168 Benchmark]: Toolchain (without parser) took 2404.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -129.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:14,767 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. [2018-09-20 15:06:14,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.84 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. [2018-09-20 15:06:14,768 INFO L168 Benchmark]: Boogie Preprocessor took 46.14 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. [2018-09-20 15:06:14,769 INFO L168 Benchmark]: RCFGBuilder took 898.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:14,770 INFO L168 Benchmark]: TraceAbstraction took 1090.24 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: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:14,771 INFO L168 Benchmark]: Witness Printer took 5.19 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. [2018-09-20 15:06:14,775 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 357.84 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 46.14 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 898.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1090.24 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: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967300, \old(y)=4294967301] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L30] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967300, ew_u={4294967302:0}, x=4294967300] [L31] FCALL ew_u.value = (x) VAL [\old(x)=4294967300, ew_u={4294967302:0}, x=4294967300] [L32] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.msw=4293918721, x=4294967300] [L32] (msw) = ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L32] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L33] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967300] [L33] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L33] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967304, \old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L34] COND FALSE !(0) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L42-L43] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] RET return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=4293918721, x=4294967300] [L55] EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=4294967301, __fpclassify_double(x)=0, x=4294967300, y=4294967301] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] RET return y; VAL [\old(x)=4294967300, \old(y)=4294967301, \result=4294967301, x=4294967300, y=4294967301] [L69] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967301, x=4294967300, y=4294967301] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967301] [L16] RET return x != x; VAL [\old(x)=4294967301, \result=0, x=4294967301] [L71] EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967301, x=4294967300, y=4294967301] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4294967301, x=4294967300, y=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 170 SDtfs, 0 SDslu, 206 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-40ef509 [2018-09-20 15:06:17,131 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:06:17,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:06:17,145 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:06:17,145 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:06:17,146 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:06:17,148 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:06:17,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:06:17,151 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:06:17,152 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:06:17,153 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:06:17,153 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:06:17,154 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:06:17,155 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:06:17,156 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:06:17,157 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:06:17,158 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:06:17,160 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:06:17,162 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:06:17,163 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:06:17,164 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:06:17,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:06:17,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:06:17,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:06:17,169 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:06:17,170 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:06:17,171 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:06:17,171 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:06:17,172 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:06:17,174 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:06:17,174 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:06:17,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:06:17,175 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:06:17,175 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:06:17,176 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:06:17,177 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:06:17,177 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:06:17,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:06:17,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:06:17,197 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:06:17,197 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:06:17,198 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:06:17,198 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:06:17,198 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:06:17,199 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:06:17,199 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:06:17,199 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:06:17,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:06:17,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:06:17,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:06:17,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:06:17,203 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:06:17,203 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:06:17,203 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:06:17,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:06:17,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:06:17,204 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:06:17,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:06:17,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:06:17,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:06:17,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:17,206 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:06:17,206 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:06:17,206 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:06:17,206 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:06:17,206 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:06:17,206 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:06:17,207 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:06:17,207 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 -> 8159dcd6ea2bf26836c04d37f0678d0278270cd7 [2018-09-20 15:06:17,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:06:17,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:06:17,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:06:17,283 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:06:17,284 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:06:17,284 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-20 15:06:17,641 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56110cf63/f167fdd709fc4cf495620168feef4fdc/FLAGb8e90771a [2018-09-20 15:06:17,832 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:06:17,833 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-20 15:06:17,845 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56110cf63/f167fdd709fc4cf495620168feef4fdc/FLAGb8e90771a [2018-09-20 15:06:17,876 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56110cf63/f167fdd709fc4cf495620168feef4fdc [2018-09-20 15:06:17,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:06:17,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:06:17,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:17,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:06:17,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:06:17,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:17" (1/1) ... [2018-09-20 15:06:17,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bbf828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:17, skipping insertion in model container [2018-09-20 15:06:17,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:17" (1/1) ... [2018-09-20 15:06:17,917 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:06:18,146 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:18,166 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:06:18,183 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:18,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18 WrapperNode [2018-09-20 15:06:18,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:18,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:06:18,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:06:18,222 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:06:18,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (1/1) ... [2018-09-20 15:06:18,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:06:18,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:06:18,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:06:18,300 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:06:18,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (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 [2018-09-20 15:06:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-20 15:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:06:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-20 15:06:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:06:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:06:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:06:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-20 15:06:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:06:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:06:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-20 15:06:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-20 15:06:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:06:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:06:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-20 15:06:18,895 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:18,934 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:18,969 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:19,130 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:06:19,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:19 BoogieIcfgContainer [2018-09-20 15:06:19,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:06:19,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:06:19,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:06:19,136 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:06:19,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:06:17" (1/3) ... [2018-09-20 15:06:19,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f901aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:19, skipping insertion in model container [2018-09-20 15:06:19,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:18" (2/3) ... [2018-09-20 15:06:19,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f901aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:19, skipping insertion in model container [2018-09-20 15:06:19,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:19" (3/3) ... [2018-09-20 15:06:19,141 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-09-20 15:06:19,152 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:06:19,162 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:06:19,206 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:06:19,207 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:06:19,207 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:06:19,207 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:06:19,208 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:06:19,208 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:06:19,208 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:06:19,208 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:06:19,208 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:06:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-09-20 15:06:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-20 15:06:19,241 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:19,242 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] [2018-09-20 15:06:19,245 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:19,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1641724368, now seen corresponding path program 1 times [2018-09-20 15:06:19,255 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:19,256 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 [2018-09-20 15:06:19,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:19,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:19,361 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:19,381 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:19,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:06:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:06:19,396 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:06:19,397 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:19,399 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-09-20 15:06:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:19,426 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2018-09-20 15:06:19,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:06:19,428 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-20 15:06:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:19,440 INFO L225 Difference]: With dead ends: 89 [2018-09-20 15:06:19,441 INFO L226 Difference]: Without dead ends: 45 [2018-09-20 15:06:19,445 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 [2018-09-20 15:06:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-20 15:06:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-20 15:06:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:06:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-20 15:06:19,495 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-09-20 15:06:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:19,496 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-20 15:06:19,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:06:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-20 15:06:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-20 15:06:19,499 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:19,499 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] [2018-09-20 15:06:19,500 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:19,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1482345005, now seen corresponding path program 1 times [2018-09-20 15:06:19,501 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:19,501 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) [2018-09-20 15:06:19,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:19,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:19,688 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:19,702 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:19,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:19,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:19,706 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:19,706 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:19,707 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2018-09-20 15:06:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:19,810 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-20 15:06:19,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:19,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-09-20 15:06:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:19,815 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:06:19,815 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:06:19,817 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:06:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:06:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:06:19,828 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2018-09-20 15:06:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:19,829 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:06:19,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:06:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:06:19,831 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:19,832 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] [2018-09-20 15:06:19,832 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1032785831, now seen corresponding path program 1 times [2018-09-20 15:06:19,834 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:19,834 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 [2018-09-20 15:06:19,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:19,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:20,062 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:20,077 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:20,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:20,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:20,078 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:20,078 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,080 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:06:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:20,162 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-20 15:06:20,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:20,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-20 15:06:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:20,165 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:06:20,166 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:06:20,167 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:06:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:06:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:06:20,178 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-20 15:06:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:20,179 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:06:20,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:06:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-20 15:06:20,182 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:20,182 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:20,182 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1154965353, now seen corresponding path program 1 times [2018-09-20 15:06:20,183 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:20,184 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 [2018-09-20 15:06:20,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:20,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:20,316 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:20,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:20,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:20,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:20,330 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:20,330 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,331 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:06:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:20,464 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-20 15:06:20,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:20,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-20 15:06:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:20,467 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:06:20,467 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:06:20,468 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:06:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:06:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:06:20,477 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2018-09-20 15:06:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:20,477 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:06:20,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:06:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-20 15:06:20,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:20,481 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:20,481 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1821175267, now seen corresponding path program 1 times [2018-09-20 15:06:20,482 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:20,482 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) [2018-09-20 15:06:20,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:20,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:20,723 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:20,736 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:20,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:20,738 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:20,738 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,739 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-20 15:06:20,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:20,832 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-20 15:06:20,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:20,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-20 15:06:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:20,834 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:06:20,834 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:06:20,835 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:06:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:06:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-20 15:06:20,845 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 40 [2018-09-20 15:06:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:20,846 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-20 15:06:20,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-20 15:06:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-20 15:06:20,847 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:20,848 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:20,848 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:20,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2114578274, now seen corresponding path program 1 times [2018-09-20 15:06:20,849 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:20,849 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:20,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:20,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:21,244 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-20 15:06:21,395 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 5 [2018-09-20 15:06:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:06:21,401 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:21,415 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:21,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:06:21,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:06:21,416 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:06:21,417 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:06:21,418 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2018-09-20 15:06:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:22,329 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-09-20 15:06:22,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:06:22,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-09-20 15:06:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:22,334 INFO L225 Difference]: With dead ends: 55 [2018-09-20 15:06:22,334 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:06:22,335 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:06:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:06:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-09-20 15:06:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:06:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-09-20 15:06:22,342 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 40 [2018-09-20 15:06:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:22,343 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-09-20 15:06:22,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:06:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-09-20 15:06:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-20 15:06:22,345 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:22,345 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:22,345 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:22,345 INFO L82 PathProgramCache]: Analyzing trace with hash 43580215, now seen corresponding path program 1 times [2018-09-20 15:06:22,346 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:22,346 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:22,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:22,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:22,474 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:22,491 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:22,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:22,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:22,492 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:22,493 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:22,493 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2018-09-20 15:06:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:22,537 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-09-20 15:06:22,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:22,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-09-20 15:06:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:22,539 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:06:22,539 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:06:22,540 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:06:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:06:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-20 15:06:22,548 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 57 [2018-09-20 15:06:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:22,548 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-20 15:06:22,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-20 15:06:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-20 15:06:22,550 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:22,551 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:22,551 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:22,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1118590449, now seen corresponding path program 1 times [2018-09-20 15:06:22,552 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:22,552 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:22,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:22,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:22,684 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:22,695 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:22,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:22,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:22,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:22,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:22,696 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-20 15:06:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:22,736 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2018-09-20 15:06:22,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:22,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-20 15:06:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:22,738 INFO L225 Difference]: With dead ends: 61 [2018-09-20 15:06:22,738 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:06:22,739 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:06:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-20 15:06:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-20 15:06:22,746 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 58 [2018-09-20 15:06:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:22,746 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-20 15:06:22,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-20 15:06:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-20 15:06:22,749 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:22,749 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:22,749 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash -899393934, now seen corresponding path program 1 times [2018-09-20 15:06:22,750 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:22,750 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:22,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:22,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:23,072 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:23,083 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:23,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:06:23,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:06:23,084 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:06:23,084 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:06:23,084 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2018-09-20 15:06:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:23,590 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-09-20 15:06:23,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:06:23,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-09-20 15:06:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:23,592 INFO L225 Difference]: With dead ends: 59 [2018-09-20 15:06:23,592 INFO L226 Difference]: Without dead ends: 48 [2018-09-20 15:06:23,593 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:06:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-20 15:06:23,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-20 15:06:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-20 15:06:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-20 15:06:23,599 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 59 [2018-09-20 15:06:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:23,599 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-20 15:06:23,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:06:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-20 15:06:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-20 15:06:23,602 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:23,602 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:23,602 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:23,603 INFO L82 PathProgramCache]: Analyzing trace with hash -198329356, now seen corresponding path program 1 times [2018-09-20 15:06:23,604 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:23,604 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:23,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:23,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:23,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:23,946 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:23,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:23,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:23,947 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:23,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:23,947 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 10 states. [2018-09-20 15:06:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:24,599 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-09-20 15:06:24,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-20 15:06:24,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-09-20 15:06:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:24,601 INFO L225 Difference]: With dead ends: 55 [2018-09-20 15:06:24,604 INFO L226 Difference]: Without dead ends: 45 [2018-09-20 15:06:24,605 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-20 15:06:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-20 15:06:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-20 15:06:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:06:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:06:24,616 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-20 15:06:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:24,618 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:06:24,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:06:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-20 15:06:24,620 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:24,620 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:24,620 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:24,620 INFO L82 PathProgramCache]: Analyzing trace with hash 335212603, now seen corresponding path program 1 times [2018-09-20 15:06:24,621 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:24,621 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:06:24,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:24,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:24,771 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:24,781 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:24,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:24,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:24,782 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:24,782 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:24,782 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-20 15:06:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:24,827 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-09-20 15:06:24,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:24,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-20 15:06:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:24,829 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:06:24,829 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:06:24,830 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:06:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-20 15:06:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:06:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:06:24,836 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-20 15:06:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:24,837 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:06:24,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:06:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-20 15:06:24,841 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:24,841 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:24,841 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:24,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1279822227, now seen corresponding path program 1 times [2018-09-20 15:06:24,842 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:24,842 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:24,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:24,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:24,971 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:24,982 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:24,982 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:24,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:24,983 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:24,983 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:24,983 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-20 15:06:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:25,017 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-09-20 15:06:25,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:25,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-20 15:06:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:25,019 INFO L225 Difference]: With dead ends: 58 [2018-09-20 15:06:25,019 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:06:25,020 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:06:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-20 15:06:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:06:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:06:25,025 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2018-09-20 15:06:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:25,026 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:06:25,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:06:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-20 15:06:25,028 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:25,028 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:25,028 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:25,029 INFO L82 PathProgramCache]: Analyzing trace with hash 986419220, now seen corresponding path program 1 times [2018-09-20 15:06:25,029 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:25,029 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:25,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:25,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:25,319 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:25,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:25,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:06:25,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:06:25,330 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:06:25,331 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:06:25,331 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 9 states. [2018-09-20 15:06:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:26,285 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-09-20 15:06:26,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:06:26,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-09-20 15:06:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:26,286 INFO L225 Difference]: With dead ends: 45 [2018-09-20 15:06:26,286 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:06:26,288 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:06:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:06:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:06:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:06:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:06:26,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-09-20 15:06:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:26,289 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:06:26,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:06:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:06:26,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:06:26,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:06:26,515 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-20 15:06:26,613 INFO L429 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point L33-2(line 33) no Hoare annotation was computed. [2018-09-20 15:06:26,614 INFO L426 ceAbstractionStarter]: For program point L33-3(line 33) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L429 ceAbstractionStarter]: At program point L29-3(lines 29 34) the Hoare annotation is: true [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L29-4(lines 26 51) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2018-09-20 15:06:26,615 INFO L426 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point L32-2(line 32) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point L30-2(line 30) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point L30-3(line 30) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:06:26,616 INFO L426 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-09-20 15:06:26,617 INFO L426 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-09-20 15:06:26,617 INFO L422 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-09-20 15:06:26,617 INFO L429 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-09-20 15:06:26,617 INFO L426 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-09-20 15:06:26,617 INFO L422 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-09-20 15:06:26,617 INFO L426 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-09-20 15:06:26,617 INFO L426 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-09-20 15:06:26,617 INFO L426 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-09-20 15:06:26,617 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:06:26,618 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:06:26,618 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:06:26,618 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:06:26,618 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 63 76) the Hoare annotation is: true [2018-09-20 15:06:26,618 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 63 76) no Hoare annotation was computed. [2018-09-20 15:06:26,618 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 63 76) no Hoare annotation was computed. [2018-09-20 15:06:26,618 INFO L426 ceAbstractionStarter]: For program point L72(line 72) no Hoare annotation was computed. [2018-09-20 15:06:26,618 INFO L422 ceAbstractionStarter]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 main_~y~0) (= .cse0 main_~res~0))) [2018-09-20 15:06:26,618 INFO L426 ceAbstractionStarter]: For program point L71-1(lines 71 74) no Hoare annotation was computed. [2018-09-20 15:06:26,619 INFO L422 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 main_~y~0) (= .cse0 main_~x~0))) [2018-09-20 15:06:26,619 INFO L426 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-09-20 15:06:26,619 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2018-09-20 15:06:26,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:06:26 BoogieIcfgContainer [2018-09-20 15:06:26,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:06:26,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:06:26,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:06:26,627 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:06:26,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:19" (3/4) ... [2018-09-20 15:06:26,632 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:06:26,640 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-20 15:06:26,640 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:06:26,640 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-20 15:06:26,640 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-09-20 15:06:26,640 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:06:26,647 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-20 15:06:26,647 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-20 15:06:26,648 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:06:26,709 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:06:26,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:06:26,710 INFO L168 Benchmark]: Toolchain (without parser) took 8828.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 953.2 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:26,711 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. [2018-09-20 15:06:26,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.35 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. [2018-09-20 15:06:26,713 INFO L168 Benchmark]: Boogie Preprocessor took 77.63 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. [2018-09-20 15:06:26,713 INFO L168 Benchmark]: RCFGBuilder took 830.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:26,714 INFO L168 Benchmark]: TraceAbstraction took 7493.71 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -75.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:26,716 INFO L168 Benchmark]: Witness Printer took 82.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:26,721 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 330.35 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 77.63 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 830.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7493.71 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -75.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 82.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. SAFE Result, 7.4s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 3.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 653 SDtfs, 31 SDslu, 1806 SDs, 0 SdLazy, 218 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 617 ConstructedInterpolants, 3 QuantifiedInterpolants, 47059 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...