/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_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/float_req_bl_1252a_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 f441bd4a1f5705911b7315c074b39e665542818e ............................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_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 f441bd4a1f5705911b7315c074b39e665542818e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:31:46,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:31:46,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:31:46,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:31:46,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:31:46,984 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:31:46,985 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:31:46,987 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:31:46,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:31:46,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:31:46,993 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:31:46,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:31:46,998 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:31:46,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:31:47,003 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:31:47,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:31:47,006 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:31:47,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:31:47,016 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:31:47,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:31:47,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:31:47,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:31:47,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:31:47,033 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:31:47,034 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:31:47,035 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:31:47,037 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:31:47,038 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:31:47,039 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:31:47,041 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:31:47,043 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:31:47,044 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:31:47,044 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:31:47,046 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:31:47,047 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:31:47,048 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:31:47,048 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:31:47,074 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:31:47,074 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:31:47,075 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:31:47,075 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:31:47,076 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:31:47,076 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:31:47,076 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:31:47,076 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:31:47,077 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:31:47,077 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:31:47,077 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:31:47,077 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:31:47,077 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:31:47,077 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:31:47,078 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:31:47,078 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:31:47,078 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:31:47,078 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:31:47,078 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:31:47,079 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:31:47,079 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:31:47,079 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:31:47,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:31:47,079 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:31:47,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:31:47,080 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:31:47,080 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:31:47,080 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:31:47,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:31:47,080 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2018-09-20 15:31:47,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:31:47,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:31:47,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:31:47,153 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:31:47,155 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:31:47,158 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-20 15:31:47,519 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752cf7f04/70fd23b42098435d9f7f762b37085828/FLAGc78fca906 [2018-09-20 15:31:47,734 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:31:47,734 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-20 15:31:47,745 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752cf7f04/70fd23b42098435d9f7f762b37085828/FLAGc78fca906 [2018-09-20 15:31:47,761 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752cf7f04/70fd23b42098435d9f7f762b37085828 [2018-09-20 15:31:47,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:31:47,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:31:47,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:47,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:31:47,778 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:31:47,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:47" (1/1) ... [2018-09-20 15:31:47,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee5304a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:47, skipping insertion in model container [2018-09-20 15:31:47,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:47" (1/1) ... [2018-09-20 15:31:47,796 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:31:47,996 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:48,014 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:31:48,033 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:48,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48 WrapperNode [2018-09-20 15:31:48,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:48,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:31:48,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:31:48,080 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:31:48,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... [2018-09-20 15:31:48,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:31:48,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:31:48,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:31:48,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:31:48,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:31:48,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:31:48,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:31:48,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:31:48,210 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-20 15:31:48,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:31:48,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:31:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:31:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:31:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:31:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:31:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:31:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:31:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:31:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:31:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:31:48,817 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:31:48,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:48 BoogieIcfgContainer [2018-09-20 15:31:48,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:31:48,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:31:48,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:31:48,822 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:31:48,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:31:47" (1/3) ... [2018-09-20 15:31:48,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ca1ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:48, skipping insertion in model container [2018-09-20 15:31:48,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:48" (2/3) ... [2018-09-20 15:31:48,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ca1ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:48, skipping insertion in model container [2018-09-20 15:31:48,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:48" (3/3) ... [2018-09-20 15:31:48,826 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-09-20 15:31:48,837 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:31:48,846 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:31:48,892 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:31:48,893 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:31:48,893 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:31:48,893 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:31:48,893 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:31:48,894 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:31:48,894 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:31:48,894 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:31:48,894 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:31:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-20 15:31:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-20 15:31:48,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:48,932 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] [2018-09-20 15:31:48,938 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:48,944 INFO L82 PathProgramCache]: Analyzing trace with hash -678868765, now seen corresponding path program 1 times [2018-09-20 15:31:48,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:48,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:48,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:48,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:48,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:49,085 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 15:31:49,087 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:49,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:31:49,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:31:49,104 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:31:49,105 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:31:49,107 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-20 15:31:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:49,136 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-09-20 15:31:49,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:31:49,139 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-20 15:31:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:49,149 INFO L225 Difference]: With dead ends: 111 [2018-09-20 15:31:49,149 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:31:49,153 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 15:31:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:31:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:31:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:31:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-20 15:31:49,204 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-20 15:31:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:49,205 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-20 15:31:49,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:31:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-20 15:31:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:31:49,208 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:49,208 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] [2018-09-20 15:31:49,208 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:49,209 INFO L82 PathProgramCache]: Analyzing trace with hash -232558112, now seen corresponding path program 1 times [2018-09-20 15:31:49,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:49,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:49,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:49,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:49,340 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 15:31:49,341 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:49,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:49,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:49,344 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:49,345 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:49,346 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-20 15:31:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:49,412 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-09-20 15:31:49,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:49,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-20 15:31:49,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:49,418 INFO L225 Difference]: With dead ends: 83 [2018-09-20 15:31:49,418 INFO L226 Difference]: Without dead ends: 60 [2018-09-20 15:31:49,421 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 15:31:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-20 15:31:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-20 15:31:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:31:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-20 15:31:49,442 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-20 15:31:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:49,443 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-20 15:31:49,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-20 15:31:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:31:49,447 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:49,447 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] [2018-09-20 15:31:49,448 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:49,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1859597870, now seen corresponding path program 1 times [2018-09-20 15:31:49,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:49,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:49,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:49,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:49,627 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 15:31:49,628 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:49,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:49,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:49,629 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:49,629 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:49,630 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-20 15:31:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:49,795 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-09-20 15:31:49,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:49,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-20 15:31:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:49,798 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:31:49,798 INFO L226 Difference]: Without dead ends: 64 [2018-09-20 15:31:49,799 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 15:31:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-20 15:31:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-20 15:31:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:31:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-20 15:31:49,810 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-20 15:31:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:49,810 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-20 15:31:49,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-20 15:31:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:31:49,812 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:49,813 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] [2018-09-20 15:31:49,813 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:49,813 INFO L82 PathProgramCache]: Analyzing trace with hash 62646511, now seen corresponding path program 1 times [2018-09-20 15:31:49,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:31:49,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:31:49,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:49,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:31:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:31:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:31:49,905 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:31:49,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:31:49 BoogieIcfgContainer [2018-09-20 15:31:49,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:31:49,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:31:49,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:31:49,955 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:31:49,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:48" (3/4) ... [2018-09-20 15:31:49,961 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:31:49,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:31:49,962 INFO L168 Benchmark]: Toolchain (without parser) took 2195.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:49,965 INFO L168 Benchmark]: CDTParser took 0.29 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 15:31:49,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.68 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:49,968 INFO L168 Benchmark]: Boogie Preprocessor took 57.19 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:31:49,970 INFO L168 Benchmark]: RCFGBuilder took 680.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:49,972 INFO L168 Benchmark]: TraceAbstraction took 1134.90 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2018-09-20 15:31:49,973 INFO L168 Benchmark]: Witness Printer took 6.83 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 15:31:49,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 308.68 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.19 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 680.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1134.90 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.83 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; VAL [y=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L20] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L23] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=4286578691, gf_u={4286578694:0}, x=4286578691] [L24] FCALL gf_u.value = (x) VAL [\old(x)=4286578691, gf_u={4286578694:0}, x=4286578691] [L25] EXPR, FCALL gf_u.word VAL [\old(x)=4286578691, gf_u={4286578694:0}, gf_u.word=4286578689, x=4286578691] [L25] (w) = gf_u.word VAL [\old(x)=4286578691, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L25] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=4286578692, \old(x)=4286578691, gf_u={4286578694:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L26] COND FALSE !(0) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L43] EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0, x=4286578691, y=0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578691, y=0] [L78] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578691, y=0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 15:31:52,305 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:31:52,307 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:31:52,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:31:52,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:31:52,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:31:52,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:31:52,323 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:31:52,325 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:31:52,326 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:31:52,327 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:31:52,327 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:31:52,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:31:52,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:31:52,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:31:52,331 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:31:52,331 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:31:52,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:31:52,335 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:31:52,337 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:31:52,338 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:31:52,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:31:52,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:31:52,342 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:31:52,343 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:31:52,344 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:31:52,345 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:31:52,346 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:31:52,347 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:31:52,348 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:31:52,348 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:31:52,349 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:31:52,349 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:31:52,349 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:31:52,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:31:52,351 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:31:52,352 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:31:52,369 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:31:52,369 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:31:52,370 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:31:52,370 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:31:52,371 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:31:52,371 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:31:52,371 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:31:52,372 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:31:52,372 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:31:52,372 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:31:52,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:31:52,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:31:52,373 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:31:52,373 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:31:52,374 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:31:52,374 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:31:52,374 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:31:52,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:31:52,375 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:31:52,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:31:52,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:31:52,376 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:31:52,376 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:31:52,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:31:52,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:31:52,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:31:52,377 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:31:52,377 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:31:52,378 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:31:52,378 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:31:52,378 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:31:52,378 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2018-09-20 15:31:52,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:31:52,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:31:52,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:31:52,488 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:31:52,489 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:31:52,489 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-20 15:31:52,844 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884d185d3/ea720fc815184c0f88deb704f6b4b290/FLAG76445cd3f [2018-09-20 15:31:53,033 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:31:53,035 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-09-20 15:31:53,044 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884d185d3/ea720fc815184c0f88deb704f6b4b290/FLAG76445cd3f [2018-09-20 15:31:53,065 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884d185d3/ea720fc815184c0f88deb704f6b4b290 [2018-09-20 15:31:53,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:31:53,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:31:53,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:53,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:31:53,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:31:53,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294241e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53, skipping insertion in model container [2018-09-20 15:31:53,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,102 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:31:53,361 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:53,384 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:31:53,413 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:31:53,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53 WrapperNode [2018-09-20 15:31:53,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:31:53,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:31:53,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:31:53,467 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:31:53,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (1/1) ... [2018-09-20 15:31:53,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:31:53,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:31:53,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:31:53,560 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:31:53,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (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 15:31:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:31:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:31:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:31:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-20 15:31:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:31:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:31:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:31:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:31:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:31:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:31:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:31:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:31:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:31:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:31:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:31:54,332 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:31:54,361 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:31:54,470 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:31:54,481 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:31:54,494 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:31:54,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:54 BoogieIcfgContainer [2018-09-20 15:31:54,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:31:54,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:31:54,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:31:54,500 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:31:54,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:31:53" (1/3) ... [2018-09-20 15:31:54,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd60b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:54, skipping insertion in model container [2018-09-20 15:31:54,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:31:53" (2/3) ... [2018-09-20 15:31:54,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd60b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:31:54, skipping insertion in model container [2018-09-20 15:31:54,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:54" (3/3) ... [2018-09-20 15:31:54,504 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-09-20 15:31:54,515 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:31:54,524 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:31:54,580 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:31:54,581 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:31:54,581 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:31:54,581 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:31:54,582 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:31:54,582 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:31:54,582 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:31:54,582 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:31:54,582 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:31:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-20 15:31:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-20 15:31:54,622 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:54,623 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] [2018-09-20 15:31:54,626 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash 552591758, now seen corresponding path program 1 times [2018-09-20 15:31:54,639 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:54,639 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 15:31:54,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:54,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:54,780 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 15:31:54,781 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:54,800 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:54,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:31:54,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:31:54,824 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:31:54,825 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:31:54,828 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-20 15:31:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:54,874 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-09-20 15:31:54,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:31:54,876 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-20 15:31:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:54,889 INFO L225 Difference]: With dead ends: 107 [2018-09-20 15:31:54,890 INFO L226 Difference]: Without dead ends: 54 [2018-09-20 15:31:54,896 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 15:31:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-20 15:31:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-20 15:31:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-20 15:31:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-20 15:31:54,964 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-20 15:31:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:54,965 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-20 15:31:54,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:31:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-20 15:31:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-20 15:31:54,970 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:54,970 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] [2018-09-20 15:31:54,970 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 876629051, now seen corresponding path program 1 times [2018-09-20 15:31:54,972 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:54,972 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:54,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:55,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:55,168 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 15:31:55,169 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:55,183 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:55,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:55,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:55,187 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:55,187 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:55,187 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-20 15:31:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:55,260 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-09-20 15:31:55,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:55,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-20 15:31:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:55,268 INFO L225 Difference]: With dead ends: 80 [2018-09-20 15:31:55,268 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:31:55,272 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 15:31:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:31:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:31:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:31:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-20 15:31:55,294 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-20 15:31:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:55,294 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-20 15:31:55,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-20 15:31:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:31:55,299 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:55,300 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] [2018-09-20 15:31:55,300 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:55,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2005374951, now seen corresponding path program 1 times [2018-09-20 15:31:55,304 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:55,304 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 15:31:55,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:55,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:55,589 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:31:55,594 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:31:55,595 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:31:55,601 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:55,616 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:55,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:31:55,681 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:31:55,686 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:31:55,686 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:31:55,690 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:55,701 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:55,702 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:31:56,075 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 15:31:56,076 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:56,090 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:56,090 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:31:56,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:31:56,091 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:31:56,091 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:31:56,091 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-20 15:31:56,604 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-20 15:31:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:57,939 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-09-20 15:31:57,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:31:57,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-20 15:31:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:57,942 INFO L225 Difference]: With dead ends: 84 [2018-09-20 15:31:57,942 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:31:57,943 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:31:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:31:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:31:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:31:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-20 15:31:57,952 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-20 15:31:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:57,953 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-20 15:31:57,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:31:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-20 15:31:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-20 15:31:57,954 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:57,955 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-20 15:31:57,955 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1989940013, now seen corresponding path program 1 times [2018-09-20 15:31:57,956 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:57,956 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 15:31:57,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:58,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:31:58,052 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:58,067 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:58,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:31:58,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:31:58,068 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:31:58,068 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:31:58,068 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-20 15:31:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:58,115 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-09-20 15:31:58,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:31:58,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-20 15:31:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:58,117 INFO L225 Difference]: With dead ends: 80 [2018-09-20 15:31:58,117 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:31:58,119 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 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 15:31:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:31:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:31:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:31:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-20 15:31:58,127 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-20 15:31:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:58,129 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-20 15:31:58,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:31:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-20 15:31:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-20 15:31:58,131 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:58,131 INFO L376 BasicCegarLoop]: trace histogram [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 15:31:58,131 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:58,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1865076213, now seen corresponding path program 1 times [2018-09-20 15:31:58,132 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:58,132 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-20 15:31:58,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:58,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:58,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:31:58,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:31:58,290 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:31:58,294 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:58,332 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:58,332 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:31:58,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:31:58,364 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:31:58,365 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:31:58,374 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:58,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:31:58,379 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:31:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:31:58,514 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:58,530 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:58,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:31:58,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:31:58,531 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:31:58,532 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:31:58,532 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-20 15:31:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:31:59,723 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-09-20 15:31:59,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:31:59,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-20 15:31:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:31:59,726 INFO L225 Difference]: With dead ends: 82 [2018-09-20 15:31:59,726 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:31:59,727 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:31:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:31:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:31:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:31:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-20 15:31:59,734 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-20 15:31:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:31:59,735 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-20 15:31:59,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:31:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-20 15:31:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-20 15:31:59,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:31:59,737 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-20 15:31:59,737 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:31:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1338435274, now seen corresponding path program 1 times [2018-09-20 15:31:59,738 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:31:59,738 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 15:31:59,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:31:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:31:59,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:31:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:31:59,937 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:31:59,947 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:31:59,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:31:59,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:31:59,948 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:31:59,948 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:31:59,949 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2018-09-20 15:32:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:32:00,228 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-09-20 15:32:00,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-20 15:32:00,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-20 15:32:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:32:00,230 INFO L225 Difference]: With dead ends: 59 [2018-09-20 15:32:00,230 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:32:00,232 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-20 15:32:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:32:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:32:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:32:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-09-20 15:32:00,240 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2018-09-20 15:32:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:32:00,240 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-09-20 15:32:00,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:32:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-09-20 15:32:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-20 15:32:00,244 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:32:00,244 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-20 15:32:00,244 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:32:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash -529088648, now seen corresponding path program 1 times [2018-09-20 15:32:00,245 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:32:00,245 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 15:32:00,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:32:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:32:00,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:32:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:32:00,416 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:32:00,426 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:32:00,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:32:00,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:32:00,428 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:32:00,428 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:32:00,428 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2018-09-20 15:32:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:32:00,511 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-09-20 15:32:00,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:32:00,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-20 15:32:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:32:00,514 INFO L225 Difference]: With dead ends: 75 [2018-09-20 15:32:00,515 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:32:00,515 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:32:00,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:32:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:32:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:32:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-20 15:32:00,521 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-20 15:32:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:32:00,522 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-20 15:32:00,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:32:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-20 15:32:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-20 15:32:00,524 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:32:00,524 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:32:00,524 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:32:00,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1111146332, now seen corresponding path program 1 times [2018-09-20 15:32:00,525 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:32:00,525 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 15:32:00,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:32:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:32:00,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:32:00,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:32:00,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:32:00,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:00,727 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:00,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:00,739 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:32:00,774 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:32:00,780 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:32:00,781 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:32:00,784 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:00,788 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:32:00,789 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:32:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:32:00,987 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:32:00,998 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:32:00,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-20 15:32:01,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-20 15:32:01,001 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-20 15:32:01,001 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-20 15:32:01,002 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 15 states. [2018-09-20 15:32:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:32:02,148 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-20 15:32:02,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-20 15:32:02,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2018-09-20 15:32:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:32:02,150 INFO L225 Difference]: With dead ends: 51 [2018-09-20 15:32:02,150 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:32:02,151 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-09-20 15:32:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:32:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:32:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:32:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:32:02,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2018-09-20 15:32:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:32:02,152 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:32:02,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-20 15:32:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:32:02,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:32:02,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:32:02,426 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:32:02,426 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:32:02,426 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:32:02,427 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:32:02,427 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:32:02,427 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:32:02,427 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:32:02,427 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 65 84) the Hoare annotation is: true [2018-09-20 15:32:02,427 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 65 84) no Hoare annotation was computed. [2018-09-20 15:32:02,427 INFO L426 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-09-20 15:32:02,427 INFO L426 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-09-20 15:32:02,427 INFO L422 ceAbstractionStarter]: At program point L78-1(line 78) the Hoare annotation is: (and (= (_ +zero 8 24) main_~res~0) |main_#t~short9| (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) main_~y~0)) [2018-09-20 15:32:02,427 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 65 84) no Hoare annotation was computed. [2018-09-20 15:32:02,428 INFO L426 ceAbstractionStarter]: For program point L78-2(line 78) no Hoare annotation was computed. [2018-09-20 15:32:02,428 INFO L422 ceAbstractionStarter]: At program point L75(line 75) the Hoare annotation is: (and (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) main_~y~0)) [2018-09-20 15:32:02,428 INFO L426 ceAbstractionStarter]: For program point L75-1(line 75) no Hoare annotation was computed. [2018-09-20 15:32:02,428 INFO L426 ceAbstractionStarter]: For program point L78-4(lines 78 81) no Hoare annotation was computed. [2018-09-20 15:32:02,428 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2018-09-20 15:32:02,428 INFO L426 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-09-20 15:32:02,428 INFO L429 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-20 15:32:02,429 INFO L422 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (= |fmax_float_#in~x| fmax_float_~x))) (or (and (= |fmax_float_#in~y| fmax_float_~y) .cse0) (and (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (not (= (bvadd __fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= |fmax_float_#in~x| (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0))))) .cse0))) [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-09-20 15:32:02,429 INFO L422 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-09-20 15:32:02,429 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-09-20 15:32:02,430 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L422 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L429 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point L59-1(line 59) no Hoare annotation was computed. [2018-09-20 15:32:02,431 INFO L426 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point L59-2(line 59) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point L57-1(line 57) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 53 63) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point L57-2(line 57) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point L57-3(line 57) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L422 ceAbstractionStarter]: At program point L56-3(lines 56 60) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-09-20 15:32:02,432 INFO L426 ceAbstractionStarter]: For program point L56-4(lines 56 60) no Hoare annotation was computed. [2018-09-20 15:32:02,432 INFO L429 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 53 63) the Hoare annotation is: true [2018-09-20 15:32:02,433 INFO L426 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 53 63) no Hoare annotation was computed. [2018-09-20 15:32:02,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:32:02 BoogieIcfgContainer [2018-09-20 15:32:02,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:32:02,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:32:02,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:32:02,447 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:32:02,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:31:54" (3/4) ... [2018-09-20 15:32:02,452 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:32:02,459 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:32:02,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:32:02,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-09-20 15:32:02,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-09-20 15:32:02,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-20 15:32:02,466 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-20 15:32:02,466 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-20 15:32:02,467 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:32:02,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-09-20 15:32:02,509 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-09-20 15:32:02,546 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:32:02,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:32:02,548 INFO L168 Benchmark]: Toolchain (without parser) took 9478.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:02,549 INFO L168 Benchmark]: CDTParser took 0.22 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 15:32:02,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.71 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:02,550 INFO L168 Benchmark]: Boogie Preprocessor took 88.93 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:02,551 INFO L168 Benchmark]: RCFGBuilder took 938.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:02,552 INFO L168 Benchmark]: TraceAbstraction took 7950.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:02,553 INFO L168 Benchmark]: Witness Printer took 99.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:32:02,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 392.71 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.93 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 938.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7950.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 99.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: 22]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 419 SDtfs, 143 SDslu, 1700 SDs, 0 SdLazy, 591 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 69 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 327 ConstructedInterpolants, 14 QuantifiedInterpolants, 44234 SizeOfPredicates, 33 NumberOfNonLiveVariables, 728 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 70/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...