/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032a_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_1032a_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 9a3696439220bbea1d6ed5ed3b22aa10206af5de ............................................................................................................................................................................................................................................................................................. 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_1032a_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 9a3696439220bbea1d6ed5ed3b22aa10206af5de ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:29:45,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:29:45,968 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:29:45,981 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:29:45,981 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:29:45,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:29:45,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:29:45,986 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:29:45,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:29:45,989 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:29:45,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:29:45,990 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:29:45,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:29:45,992 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:29:45,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:29:45,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:29:45,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:29:45,998 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:29:46,000 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:29:46,001 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:29:46,003 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:29:46,004 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:29:46,007 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:29:46,007 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:29:46,008 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:29:46,009 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:29:46,010 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:29:46,011 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:29:46,012 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:29:46,014 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:29:46,014 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:29:46,015 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:29:46,015 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:29:46,015 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:29:46,017 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:29:46,017 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:29:46,018 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:29:46,034 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:29:46,034 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:29:46,035 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:29:46,035 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:29:46,036 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:29:46,036 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:29:46,037 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:29:46,037 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:29:46,037 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:29:46,037 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:29:46,037 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:29:46,038 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:29:46,038 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:29:46,038 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:29:46,038 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:29:46,038 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:29:46,040 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:29:46,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:29:46,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:29:46,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:29:46,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:29:46,041 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:29:46,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:29:46,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:29:46,041 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:29:46,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:29:46,043 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:29:46,043 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:29:46,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:29:46,043 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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-09-20 15:29:46,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:29:46,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:29:46,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:29:46,115 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:29:46,115 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:29:46,116 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-09-20 15:29:46,485 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c671262a/d32e749e377d4edfbd24cd79127b622d/FLAG780cfb420 [2018-09-20 15:29:46,690 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:29:46,692 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-09-20 15:29:46,711 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c671262a/d32e749e377d4edfbd24cd79127b622d/FLAG780cfb420 [2018-09-20 15:29:46,732 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c671262a/d32e749e377d4edfbd24cd79127b622d [2018-09-20 15:29:46,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:29:46,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:29:46,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:46,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:29:46,750 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:29:46,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aae1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46, skipping insertion in model container [2018-09-20 15:29:46,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,767 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:29:47,058 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:47,076 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:29:47,100 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:47,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47 WrapperNode [2018-09-20 15:29:47,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:47,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:29:47,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:29:47,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:29:47,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (1/1) ... [2018-09-20 15:29:47,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:29:47,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:29:47,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:29:47,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:29:47,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (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 15:29:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:29:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:29:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-09-20 15:29:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:29:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:29:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:29:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:29:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-09-20 15:29:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:29:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:29:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:29:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:29:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:29:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:29:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:29:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:29:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:29:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:29:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:29:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:29:48,053 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:29:48,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:48 BoogieIcfgContainer [2018-09-20 15:29:48,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:29:48,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:29:48,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:29:48,061 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:29:48,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:29:46" (1/3) ... [2018-09-20 15:29:48,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3739d975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:48, skipping insertion in model container [2018-09-20 15:29:48,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:47" (2/3) ... [2018-09-20 15:29:48,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3739d975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:48, skipping insertion in model container [2018-09-20 15:29:48,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:48" (3/3) ... [2018-09-20 15:29:48,067 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-09-20 15:29:48,078 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:29:48,088 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:29:48,144 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:29:48,145 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:29:48,145 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:29:48,145 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:29:48,146 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:29:48,146 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:29:48,147 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:29:48,147 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:29:48,147 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:29:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-20 15:29:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-20 15:29:48,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:48,181 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:48,184 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash -278214289, now seen corresponding path program 1 times [2018-09-20 15:29:48,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:29:48,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:29:48,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:48,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:48,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:48,336 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 15:29:48,339 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:48,339 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:29:48,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:29:48,360 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:29:48,362 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:48,365 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-20 15:29:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:48,394 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2018-09-20 15:29:48,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:29:48,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-20 15:29:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:48,407 INFO L225 Difference]: With dead ends: 116 [2018-09-20 15:29:48,407 INFO L226 Difference]: Without dead ends: 58 [2018-09-20 15:29:48,411 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 15:29:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-20 15:29:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-20 15:29:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-20 15:29:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-09-20 15:29:48,457 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 18 [2018-09-20 15:29:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:48,458 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-09-20 15:29:48,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:29:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-09-20 15:29:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-20 15:29:48,460 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:48,460 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:48,460 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1883281509, now seen corresponding path program 1 times [2018-09-20 15:29:48,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:29:48,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:29:48,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:48,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:48,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:29:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:29:48,581 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:29:48,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:29:48 BoogieIcfgContainer [2018-09-20 15:29:48,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:29:48,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:29:48,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:29:48,624 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:29:48,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:48" (3/4) ... [2018-09-20 15:29:48,629 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:29:48,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:29:48,631 INFO L168 Benchmark]: Toolchain (without parser) took 1893.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -122.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,633 INFO L168 Benchmark]: CDTParser took 0.21 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 15:29:48,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.77 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,634 INFO L168 Benchmark]: Boogie Preprocessor took 72.24 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,635 INFO L168 Benchmark]: RCFGBuilder took 845.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,636 INFO L168 Benchmark]: TraceAbstraction took 566.60 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,637 INFO L168 Benchmark]: Witness Printer took 5.57 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 15:29:48,641 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 392.77 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.24 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 845.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 566.60 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.57 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: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L75] float x = 0.0f; VAL [x=0] [L76] CALL, EXPR round_float(x) VAL [\old(x)=0] [L13] __uint32_t w; [L15] int exponent_less_127; VAL [\old(x)=0, x=0] [L18] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={5:0}, x=0] [L19] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={5:0}, x=0] [L20] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={5:0}, gf_u.word=8, x=0] [L20] (w) = gf_u.word VAL [\old(x)=0, gf_u={5:0}, gf_u.word=8, w=8, x=0] [L20] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=10, \old(x)=0, gf_u={5:0}, gf_u.word=8, w=8, x=0] [L21] COND FALSE !(0) VAL [\old(x)=0, w=8, x=0] [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=128, w=8, x=0] [L25] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=0, exponent_less_127=128, w=8, x=0] [L41] COND TRUE exponent_less_127 == 128 [L43] RET return x + x; VAL [\old(x)=0, exponent_less_127=128, w=8, x=0] [L76] EXPR round_float(x) VAL [round_float(x)=7, x=0] [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=7, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [res=7, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [res=7, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 62 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-40ef509 [2018-09-20 15:29:51,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:29:51,050 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:29:51,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:29:51,067 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:29:51,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:29:51,071 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:29:51,075 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:29:51,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:29:51,079 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:29:51,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:29:51,083 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:29:51,084 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:29:51,086 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:29:51,096 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:29:51,097 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:29:51,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:29:51,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:29:51,105 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:29:51,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:29:51,110 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:29:51,112 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:29:51,118 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:29:51,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:29:51,120 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:29:51,121 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:29:51,124 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:29:51,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:29:51,126 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:29:51,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:29:51,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:29:51,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:29:51,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:29:51,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:29:51,132 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:29:51,134 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:29:51,135 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:29:51,168 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:29:51,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:29:51,169 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:29:51,170 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:29:51,170 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:29:51,174 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:29:51,174 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:29:51,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:29:51,174 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:29:51,174 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:29:51,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:29:51,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:29:51,175 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:29:51,175 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:29:51,175 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:29:51,175 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:29:51,176 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:29:51,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:29:51,176 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:29:51,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:29:51,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:29:51,179 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:29:51,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:29:51,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:29:51,180 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:29:51,180 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:29:51,180 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:29:51,180 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:29:51,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:29:51,181 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:29:51,181 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:29:51,181 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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2018-09-20 15:29:51,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:29:51,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:29:51,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:29:51,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:29:51,292 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:29:51,293 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-09-20 15:29:51,648 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a4edb0c/bbb803cee70a46a890047d246e10c47b/FLAGf91ca9969 [2018-09-20 15:29:51,786 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:29:51,787 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032a_true-unreach-call.c [2018-09-20 15:29:51,797 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a4edb0c/bbb803cee70a46a890047d246e10c47b/FLAGf91ca9969 [2018-09-20 15:29:51,815 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a4edb0c/bbb803cee70a46a890047d246e10c47b [2018-09-20 15:29:51,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:29:51,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:29:51,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:51,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:29:51,830 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:29:51,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319718f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51, skipping insertion in model container [2018-09-20 15:29:51,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,849 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:29:52,133 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:52,158 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:29:52,189 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:52,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52 WrapperNode [2018-09-20 15:29:52,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:52,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:29:52,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:29:52,232 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:29:52,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (1/1) ... [2018-09-20 15:29:52,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:29:52,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:29:52,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:29:52,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:29:52,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (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 15:29:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:29:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:29:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-09-20 15:29:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:29:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:29:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:29:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:29:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-09-20 15:29:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:29:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:29:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:29:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:29:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:29:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:29:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:29:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:29:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:29:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:29:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:29:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:29:52,999 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:29:53,021 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:29:53,123 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:29:53,141 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:29:53,158 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:29:53,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:53 BoogieIcfgContainer [2018-09-20 15:29:53,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:29:53,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:29:53,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:29:53,164 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:29:53,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:29:51" (1/3) ... [2018-09-20 15:29:53,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e28b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:53, skipping insertion in model container [2018-09-20 15:29:53,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:52" (2/3) ... [2018-09-20 15:29:53,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e28b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:53, skipping insertion in model container [2018-09-20 15:29:53,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:53" (3/3) ... [2018-09-20 15:29:53,168 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a_true-unreach-call.c [2018-09-20 15:29:53,179 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:29:53,188 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:29:53,239 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:29:53,240 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:29:53,240 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:29:53,240 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:29:53,240 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:29:53,241 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:29:53,241 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:29:53,241 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:29:53,241 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:29:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-20 15:29:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-20 15:29:53,277 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:53,278 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:53,281 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:53,287 INFO L82 PathProgramCache]: Analyzing trace with hash -278214289, now seen corresponding path program 1 times [2018-09-20 15:29:53,292 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:53,293 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 15:29:53,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:53,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:53,399 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 15:29:53,399 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:53,413 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:53,414 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:29:53,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:29:53,433 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:29:53,434 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:53,436 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-20 15:29:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:53,465 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2018-09-20 15:29:53,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:29:53,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-20 15:29:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:53,477 INFO L225 Difference]: With dead ends: 116 [2018-09-20 15:29:53,477 INFO L226 Difference]: Without dead ends: 58 [2018-09-20 15:29:53,483 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:53,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-20 15:29:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-20 15:29:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-20 15:29:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-09-20 15:29:53,541 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 18 [2018-09-20 15:29:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:53,543 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-09-20 15:29:53,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:29:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-09-20 15:29:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-20 15:29:53,547 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:53,547 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:53,548 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:53,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1883281509, now seen corresponding path program 1 times [2018-09-20 15:29:53,549 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:53,550 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:29:53,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:29:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:53,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:53,711 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 15:29:53,717 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 15:29:53,718 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:53,734 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:53,813 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 15:29:53,814 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:29:53,941 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 15:29:53,958 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 15:29:53,959 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:53,988 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:54,012 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 15:29:54,013 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:29:54,335 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 15:29:54,336 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:54,351 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:54,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:29:54,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:29:54,356 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:29:54,356 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:29:54,357 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 9 states. [2018-09-20 15:29:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:56,136 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2018-09-20 15:29:56,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-20 15:29:56,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-09-20 15:29:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:56,142 INFO L225 Difference]: With dead ends: 83 [2018-09-20 15:29:56,143 INFO L226 Difference]: Without dead ends: 59 [2018-09-20 15:29:56,144 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:29:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-20 15:29:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2018-09-20 15:29:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:29:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-09-20 15:29:56,155 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 27 [2018-09-20 15:29:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:56,155 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-09-20 15:29:56,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:29:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-09-20 15:29:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-20 15:29:56,158 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:56,159 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:56,159 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:56,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1105276264, now seen corresponding path program 1 times [2018-09-20 15:29:56,160 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:56,160 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 15:29:56,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:29:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:56,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:56,247 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 15:29:56,253 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 15:29:56,253 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,258 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,272 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 15:29:56,273 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:29:56,347 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 15:29:56,362 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 15:29:56,363 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,382 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,385 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 15:29:56,386 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:29:56,588 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 15:29:56,588 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:56,609 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:56,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:29:56,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:29:56,610 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:29:56,610 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:29:56,610 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 9 states. [2018-09-20 15:29:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:57,661 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2018-09-20 15:29:57,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-20 15:29:57,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-20 15:29:57,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:57,670 INFO L225 Difference]: With dead ends: 93 [2018-09-20 15:29:57,670 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:29:57,671 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-09-20 15:29:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:29:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:29:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:29:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2018-09-20 15:29:57,679 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 28 [2018-09-20 15:29:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:57,680 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2018-09-20 15:29:57,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:29:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2018-09-20 15:29:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-20 15:29:57,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:57,683 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:57,683 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:57,683 INFO L82 PathProgramCache]: Analyzing trace with hash -663286814, now seen corresponding path program 1 times [2018-09-20 15:29:57,684 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:57,685 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 15:29:57,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:57,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:57,775 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 15:29:57,779 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 15:29:57,779 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,784 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,799 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 15:29:57,800 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:29:57,861 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 15:29:57,871 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 15:29:57,871 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,877 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,879 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 15:29:57,880 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:29:58,090 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 15:29:58,091 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:58,102 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:58,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:29:58,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:29:58,103 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:29:58,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:29:58,103 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 9 states. [2018-09-20 15:29:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:58,973 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2018-09-20 15:29:58,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-20 15:29:58,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-09-20 15:29:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:58,977 INFO L225 Difference]: With dead ends: 90 [2018-09-20 15:29:58,977 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:29:58,978 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-09-20 15:29:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:29:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:29:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:29:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-09-20 15:29:58,985 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 39 [2018-09-20 15:29:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:58,986 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-09-20 15:29:58,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:29:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-09-20 15:29:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-20 15:29:58,987 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:58,989 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:58,989 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:58,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1637535776, now seen corresponding path program 1 times [2018-09-20 15:29:58,990 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:58,990 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 15:29:58,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:59,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:59,069 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 15:29:59,072 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 15:29:59,073 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,079 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,093 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 15:29:59,094 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:29:59,124 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 15:29:59,128 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 15:29:59,129 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,135 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,138 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 15:29:59,138 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:29:59,230 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 13 treesize of output 10 [2018-09-20 15:29:59,234 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 10 treesize of output 9 [2018-09-20 15:29:59,235 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,243 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,260 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:29:59,261 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-09-20 15:29:59,311 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-09-20 15:29:59,315 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-09-20 15:29:59,315 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,320 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:59,330 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:29:59,331 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-09-20 15:29:59,580 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 15:29:59,581 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:59,590 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:59,591 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-20 15:29:59,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-20 15:29:59,591 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-20 15:29:59,592 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-20 15:29:59,592 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2018-09-20 15:30:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:30:01,099 INFO L93 Difference]: Finished difference Result 59 states and 58 transitions. [2018-09-20 15:30:01,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-20 15:30:01,100 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2018-09-20 15:30:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:30:01,102 INFO L225 Difference]: With dead ends: 59 [2018-09-20 15:30:01,102 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:30:01,104 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2018-09-20 15:30:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:30:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:30:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:30:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 55 transitions. [2018-09-20 15:30:01,111 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 55 transitions. Word has length 39 [2018-09-20 15:30:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:30:01,111 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 55 transitions. [2018-09-20 15:30:01,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-20 15:30:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 55 transitions. [2018-09-20 15:30:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-20 15:30:01,114 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:30:01,114 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:30:01,115 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:30:01,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1231012154, now seen corresponding path program 1 times [2018-09-20 15:30:01,116 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:30:01,116 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 15:30:01,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:30:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:30:01,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:30:01,209 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 15:30:01,221 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 15:30:01,221 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,225 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,235 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 15:30:01,237 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:30:01,274 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 15:30:01,286 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 15:30:01,287 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,310 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,338 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 15:30:01,338 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:30:01,431 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 13 treesize of output 10 [2018-09-20 15:30:01,437 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 10 treesize of output 9 [2018-09-20 15:30:01,438 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,441 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,453 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:30:01,453 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-09-20 15:30:01,552 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-09-20 15:30:01,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-09-20 15:30:01,569 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,575 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:30:01,585 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:30:01,585 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-09-20 15:30:02,184 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 15:30:02,190 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 15:30:02,191 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:30:02,194 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:30:02,204 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 15:30:02,206 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:30:02,310 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 15:30:02,314 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 15:30:02,314 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:30:02,317 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:30:02,319 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 15:30:02,320 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:30:02,741 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 15:30:02,741 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:30:02,759 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:30:02,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-09-20 15:30:02,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-20 15:30:02,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-20 15:30:02,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-09-20 15:30:02,762 INFO L87 Difference]: Start difference. First operand 56 states and 55 transitions. Second operand 21 states. [2018-09-20 15:30:03,815 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-20 15:30:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:30:05,920 INFO L93 Difference]: Finished difference Result 56 states and 55 transitions. [2018-09-20 15:30:05,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-20 15:30:05,921 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2018-09-20 15:30:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:30:05,922 INFO L225 Difference]: With dead ends: 56 [2018-09-20 15:30:05,922 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:30:05,924 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2018-09-20 15:30:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:30:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:30:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:30:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:30:05,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2018-09-20 15:30:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:30:05,926 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:30:05,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-20 15:30:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:30:05,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:30:05,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:30:06,133 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:30:06,134 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L48-2(line 48) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L48-3(line 48) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point round_floatEXIT(lines 12 53) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-09-20 15:30:06,135 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-20 15:30:06,136 INFO L426 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-09-20 15:30:06,136 INFO L426 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2018-09-20 15:30:06,136 INFO L426 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-09-20 15:30:06,136 INFO L426 ceAbstractionStarter]: For program point L41(lines 41 45) no Hoare annotation was computed. [2018-09-20 15:30:06,136 INFO L429 ceAbstractionStarter]: At program point round_floatENTRY(lines 12 53) the Hoare annotation is: true [2018-09-20 15:30:06,136 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 35) no Hoare annotation was computed. [2018-09-20 15:30:06,139 INFO L426 ceAbstractionStarter]: For program point L25(lines 25 46) no Hoare annotation was computed. [2018-09-20 15:30:06,139 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-20 15:30:06,139 INFO L426 ceAbstractionStarter]: For program point L50-1(line 50) no Hoare annotation was computed. [2018-09-20 15:30:06,140 INFO L426 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-09-20 15:30:06,140 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-20 15:30:06,140 INFO L422 ceAbstractionStarter]: At program point L17-3(lines 17 21) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-09-20 15:30:06,140 INFO L426 ceAbstractionStarter]: For program point L17-4(lines 17 21) no Hoare annotation was computed. [2018-09-20 15:30:06,140 INFO L426 ceAbstractionStarter]: For program point round_floatFINAL(lines 12 53) no Hoare annotation was computed. [2018-09-20 15:30:06,140 INFO L426 ceAbstractionStarter]: For program point L26(lines 26 39) no Hoare annotation was computed. [2018-09-20 15:30:06,140 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-20 15:30:06,145 INFO L426 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-09-20 15:30:06,145 INFO L426 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2018-09-20 15:30:06,145 INFO L426 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2018-09-20 15:30:06,145 INFO L426 ceAbstractionStarter]: For program point L47(lines 47 51) no Hoare annotation was computed. [2018-09-20 15:30:06,145 INFO L426 ceAbstractionStarter]: For program point L47-2(lines 12 53) no Hoare annotation was computed. [2018-09-20 15:30:06,145 INFO L426 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2018-09-20 15:30:06,148 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:30:06,148 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:30:06,148 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:30:06,148 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:30:06,148 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-09-20 15:30:06,148 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 67 85) the Hoare annotation is: true [2018-09-20 15:30:06,149 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 67 85) no Hoare annotation was computed. [2018-09-20 15:30:06,149 INFO L426 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-09-20 15:30:06,149 INFO L426 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-09-20 15:30:06,149 INFO L422 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (exists ((v_round_float_~w~0_14 (_ BitVec 32))) (and (= (_ +zero 8 24) (fp ((_ extract 31 31) v_round_float_~w~0_14) ((_ extract 30 23) v_round_float_~w~0_14) ((_ extract 22 0) v_round_float_~w~0_14))) (= (let ((.cse0 (bvand v_round_float_~w~0_14 (_ bv2147483648 32)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) main_~res~0)))) [2018-09-20 15:30:06,149 INFO L426 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-09-20 15:30:06,152 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 67 85) no Hoare annotation was computed. [2018-09-20 15:30:06,152 INFO L422 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (= (_ +zero 8 24) main_~x~0) [2018-09-20 15:30:06,153 INFO L426 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L61-1(line 61) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L61-2(line 61) no Hoare annotation was computed. [2018-09-20 15:30:06,154 INFO L426 ceAbstractionStarter]: For program point L59-1(line 59) no Hoare annotation was computed. [2018-09-20 15:30:06,155 INFO L426 ceAbstractionStarter]: For program point L59-2(line 59) no Hoare annotation was computed. [2018-09-20 15:30:06,155 INFO L426 ceAbstractionStarter]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2018-09-20 15:30:06,155 INFO L426 ceAbstractionStarter]: For program point L59-3(line 59) no Hoare annotation was computed. [2018-09-20 15:30:06,155 INFO L426 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 55 65) no Hoare annotation was computed. [2018-09-20 15:30:06,155 INFO L422 ceAbstractionStarter]: At program point L58-3(lines 58 62) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-09-20 15:30:06,155 INFO L426 ceAbstractionStarter]: For program point L58-4(lines 58 62) no Hoare annotation was computed. [2018-09-20 15:30:06,155 INFO L429 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 55 65) the Hoare annotation is: true [2018-09-20 15:30:06,165 INFO L426 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 55 65) no Hoare annotation was computed. [2018-09-20 15:30:06,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:30:06 BoogieIcfgContainer [2018-09-20 15:30:06,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:30:06,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:30:06,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:30:06,186 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:30:06,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:53" (3/4) ... [2018-09-20 15:30:06,192 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:30:06,200 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:30:06,200 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-09-20 15:30:06,201 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:30:06,201 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-20 15:30:06,207 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-20 15:30:06,208 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-20 15:30:06,208 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:30:06,243 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-09-20 15:30:06,244 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-09-20 15:30:06,274 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:30:06,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:30:06,275 INFO L168 Benchmark]: Toolchain (without parser) took 14456.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 949.2 MB in the beginning and 933.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 203.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:30:06,277 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:30:06,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.36 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:30:06,279 INFO L168 Benchmark]: Boogie Preprocessor took 64.92 ms. Allocated memory is still 1.0 GB. Free memory was 938.4 MB in the beginning and 933.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:30:06,280 INFO L168 Benchmark]: RCFGBuilder took 862.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 933.0 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:30:06,281 INFO L168 Benchmark]: TraceAbstraction took 13025.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 941.6 MB in the end (delta: 144.6 MB). Peak memory consumption was 207.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:30:06,283 INFO L168 Benchmark]: Witness Printer took 88.70 ms. Allocated memory is still 1.2 GB. Free memory was 941.6 MB in the beginning and 933.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:30:06,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 408.36 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.92 ms. Allocated memory is still 1.0 GB. Free memory was 938.4 MB in the beginning and 933.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 862.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 933.0 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13025.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 941.6 MB in the end (delta: 144.6 MB). Peak memory consumption was 207.5 MB. Max. memory is 11.5 GB. * Witness Printer took 88.70 ms. Allocated memory is still 1.2 GB. Free memory was 941.6 MB in the beginning and 933.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 17]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 62 locations, 1 error locations. SAFE Result, 12.9s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 8.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 292 SDtfs, 256 SDslu, 1805 SDs, 0 SdLazy, 853 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 262 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 46 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 59 QuantifiedInterpolants, 82742 SizeOfPredicates, 57 NumberOfNonLiveVariables, 406 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...