/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float12_true-unreach-call_true-termination.i --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/floats-cbmc-regression/float12_true-unreach-call_true-termination.i -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 c82214860fee184bc373305d606fd208dd65fd42 ...................................................................................................................................................................................................................... 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/floats-cbmc-regression/float12_true-unreach-call_true-termination.i -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 c82214860fee184bc373305d606fd208dd65fd42 ............................................................................................................................................................................................................................................................. 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 13:46:23,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:46:23,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:46:23,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:46:23,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:46:23,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:46:23,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:46:23,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:46:23,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:46:23,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:46:23,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:46:23,967 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:46:23,968 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:46:23,969 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:46:23,971 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:46:23,972 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:46:23,973 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:46:23,975 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:46:23,977 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:46:23,979 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:46:23,981 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:46:23,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:46:23,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:46:23,986 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:46:23,986 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:46:23,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:46:23,989 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:46:23,990 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:46:23,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:46:23,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:46:23,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:46:23,994 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:46:23,994 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:46:23,995 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:46:23,996 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:46:23,997 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:46:23,998 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:46:24,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:46:24,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:46:24,016 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:46:24,017 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:46:24,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:46:24,018 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:46:24,018 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:46:24,019 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:46:24,019 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:46:24,019 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:46:24,019 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:46:24,020 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:46:24,020 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:46:24,020 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:46:24,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:46:24,022 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:46:24,022 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:46:24,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:46:24,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:46:24,023 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:46:24,023 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:46:24,023 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:46:24,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:46:24,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:46:24,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:46:24,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:46:24,025 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:46:24,025 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:46:24,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:46:24,026 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 -> c82214860fee184bc373305d606fd208dd65fd42 [2018-09-20 13:46:24,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:46:24,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:46:24,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:46:24,096 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:46:24,096 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:46:24,097 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-09-20 13:46:24,440 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8405bbb39/fdf82efb78c74e2ca7ac3dc71661dbbd/FLAGb3704cbb1 [2018-09-20 13:46:24,584 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:46:24,585 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-09-20 13:46:24,592 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8405bbb39/fdf82efb78c74e2ca7ac3dc71661dbbd/FLAGb3704cbb1 [2018-09-20 13:46:24,609 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8405bbb39/fdf82efb78c74e2ca7ac3dc71661dbbd [2018-09-20 13:46:24,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:46:24,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:46:24,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:46:24,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:46:24,627 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:46:24,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0e4a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24, skipping insertion in model container [2018-09-20 13:46:24,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,644 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:46:24,840 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:46:24,859 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:46:24,863 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:46:24,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24 WrapperNode [2018-09-20 13:46:24,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:46:24,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:46:24,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:46:24,877 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:46:24,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (1/1) ... [2018-09-20 13:46:24,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:46:24,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:46:24,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:46:24,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:46:24,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (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 13:46:24,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:46:24,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:46:24,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:46:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:46:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:46:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2018-09-20 13:46:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:46:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:46:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:46:25,392 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:46:25,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:25 BoogieIcfgContainer [2018-09-20 13:46:25,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:46:25,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:46:25,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:46:25,407 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:46:25,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:46:24" (1/3) ... [2018-09-20 13:46:25,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f16eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:46:25, skipping insertion in model container [2018-09-20 13:46:25,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:24" (2/3) ... [2018-09-20 13:46:25,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f16eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:46:25, skipping insertion in model container [2018-09-20 13:46:25,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:25" (3/3) ... [2018-09-20 13:46:25,419 INFO L112 eAbstractionObserver]: Analyzing ICFG float12_true-unreach-call_true-termination.i [2018-09-20 13:46:25,429 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:46:25,438 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:46:25,492 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:46:25,492 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:46:25,493 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:46:25,493 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:46:25,493 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:46:25,493 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:46:25,493 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:46:25,493 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:46:25,493 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:46:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:46:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-20 13:46:25,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:46:25,521 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:46:25,523 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:46:25,529 INFO L82 PathProgramCache]: Analyzing trace with hash -689330286, now seen corresponding path program 1 times [2018-09-20 13:46:25,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:46:25,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:46:25,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:46:25,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:46:25,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:46:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:46:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:46:25,642 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:46:25,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:46:25 BoogieIcfgContainer [2018-09-20 13:46:25,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:46:25,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:46:25,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:46:25,666 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:46:25,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:25" (3/4) ... [2018-09-20 13:46:25,671 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:46:25,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:46:25,672 INFO L168 Benchmark]: Toolchain (without parser) took 1057.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:46:25,674 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 13:46:25,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.88 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:25,677 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:46:25,677 INFO L168 Benchmark]: RCFGBuilder took 488.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:25,679 INFO L168 Benchmark]: TraceAbstraction took 265.92 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: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:25,680 INFO L168 Benchmark]: Witness Printer took 5.49 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 13:46:25,686 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 256.88 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 488.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 265.92 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: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.49 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: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryDOUBLEComparisonOperation at line 13. Possible FailurePath: [L6] float f = __VERIFIER_nondet_float(); [L7] double d; [L8] unsigned char x = __VERIFIER_nondet_uchar(); [L10] d=f VAL [d=0, f=0, x=1] [L12] COND TRUE f==x VAL [d=0, f=0, x=1] [L13] COND TRUE !(d==x) VAL [d=0, f=0, x=1] [L13] __VERIFIER_error() VAL [d=0, f=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 13:46:28,100 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:46:28,104 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:46:28,132 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:46:28,136 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:46:28,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:46:28,140 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:46:28,146 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:46:28,148 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:46:28,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:46:28,153 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:46:28,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:46:28,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:46:28,160 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:46:28,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:46:28,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:46:28,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:46:28,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:46:28,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:46:28,181 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:46:28,187 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:46:28,188 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:46:28,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:46:28,197 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:46:28,197 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:46:28,198 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:46:28,199 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:46:28,204 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:46:28,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:46:28,209 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:46:28,212 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:46:28,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:46:28,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:46:28,214 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:46:28,215 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:46:28,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:46:28,219 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:46:28,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:46:28,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:46:28,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:46:28,257 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:46:28,257 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:46:28,258 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:46:28,259 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:46:28,259 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:46:28,259 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:46:28,260 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:46:28,260 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:46:28,260 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:46:28,261 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:46:28,261 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:46:28,261 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:46:28,261 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:46:28,261 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:46:28,264 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:46:28,264 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:46:28,264 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:46:28,264 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:46:28,265 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:46:28,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:46:28,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:46:28,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:46:28,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:46:28,266 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:46:28,267 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:46:28,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:46:28,267 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:46:28,267 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:46:28,267 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 -> c82214860fee184bc373305d606fd208dd65fd42 [2018-09-20 13:46:28,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:46:28,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:46:28,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:46:28,372 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:46:28,372 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:46:28,373 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-09-20 13:46:28,739 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b142f8121/fc5a610b34c44bc9a3a0924e1475d6a1/FLAG56909e893 [2018-09-20 13:46:28,877 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:46:28,878 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-09-20 13:46:28,883 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b142f8121/fc5a610b34c44bc9a3a0924e1475d6a1/FLAG56909e893 [2018-09-20 13:46:28,901 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b142f8121/fc5a610b34c44bc9a3a0924e1475d6a1 [2018-09-20 13:46:28,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:46:28,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:46:28,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:46:28,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:46:28,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:46:28,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:46:28" (1/1) ... [2018-09-20 13:46:28,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72325227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:28, skipping insertion in model container [2018-09-20 13:46:28,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:46:28" (1/1) ... [2018-09-20 13:46:28,934 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:46:29,120 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:46:29,139 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:46:29,142 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:46:29,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29 WrapperNode [2018-09-20 13:46:29,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:46:29,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:46:29,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:46:29,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:46:29,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (1/1) ... [2018-09-20 13:46:29,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:46:29,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:46:29,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:46:29,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:46:29,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (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 13:46:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:46:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:46:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:46:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:46:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:46:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2018-09-20 13:46:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:46:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:46:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:46:29,709 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:46:29,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:29 BoogieIcfgContainer [2018-09-20 13:46:29,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:46:29,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:46:29,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:46:29,715 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:46:29,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:46:28" (1/3) ... [2018-09-20 13:46:29,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13df723e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:46:29, skipping insertion in model container [2018-09-20 13:46:29,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:29" (2/3) ... [2018-09-20 13:46:29,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13df723e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:46:29, skipping insertion in model container [2018-09-20 13:46:29,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:29" (3/3) ... [2018-09-20 13:46:29,718 INFO L112 eAbstractionObserver]: Analyzing ICFG float12_true-unreach-call_true-termination.i [2018-09-20 13:46:29,729 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:46:29,737 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:46:29,790 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:46:29,791 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:46:29,791 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:46:29,791 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:46:29,791 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:46:29,791 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:46:29,791 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:46:29,792 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:46:29,792 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:46:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:46:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-20 13:46:29,817 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:46:29,818 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:46:29,821 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:46:29,827 INFO L82 PathProgramCache]: Analyzing trace with hash -689330286, now seen corresponding path program 1 times [2018-09-20 13:46:29,831 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:46:29,832 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 13:46:29,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:46:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:46:29,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:46:30,176 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-09-20 13:46:31,498 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-20 13:46:32,453 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 13:46:32,453 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:46:32,466 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:46:32,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 13:46:32,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 13:46:32,484 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 13:46:32,485 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 13:46:32,489 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-09-20 13:46:37,870 WARN L178 SmtUtils]: Spent 3.37 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-20 13:46:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:46:39,425 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-20 13:46:39,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 13:46:39,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-09-20 13:46:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:46:39,453 INFO L225 Difference]: With dead ends: 19 [2018-09-20 13:46:39,453 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 13:46:39,457 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-20 13:46:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 13:46:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 13:46:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 13:46:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 13:46:39,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-09-20 13:46:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:46:39,483 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 13:46:39,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 13:46:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 13:46:39,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 13:46:39,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 13:46:39,542 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-20 13:46:39,543 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:46:39,543 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:46:39,543 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 13:46:39,543 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 13:46:39,543 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 13:46:39,544 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-09-20 13:46:39,544 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 4 14) the Hoare annotation is: true [2018-09-20 13:46:39,544 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 4 14) no Hoare annotation was computed. [2018-09-20 13:46:39,544 INFO L426 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-09-20 13:46:39,545 INFO L426 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2018-09-20 13:46:39,546 INFO L426 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-09-20 13:46:39,546 INFO L426 ceAbstractionStarter]: For program point L12-1(lines 4 14) no Hoare annotation was computed. [2018-09-20 13:46:39,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:46:39 BoogieIcfgContainer [2018-09-20 13:46:39,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:46:39,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:46:39,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:46:39,551 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:46:39,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:29" (3/4) ... [2018-09-20 13:46:39,557 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 13:46:39,565 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 13:46:39,566 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 13:46:39,571 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-20 13:46:39,571 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-20 13:46:39,571 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 13:46:39,618 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:46:39,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:46:39,619 INFO L168 Benchmark]: Toolchain (without parser) took 10713.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -124.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:39,621 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:46:39,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.40 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 13:46:39,623 INFO L168 Benchmark]: Boogie Preprocessor took 33.40 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:46:39,623 INFO L168 Benchmark]: RCFGBuilder took 515.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:39,624 INFO L168 Benchmark]: TraceAbstraction took 9839.03 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:39,625 INFO L168 Benchmark]: Witness Printer took 67.46 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-09-20 13:46:39,631 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.40 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 33.40 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 515.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9839.03 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.46 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 9.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 6.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 6 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 1 QuantifiedInterpolants, 154 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...