./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/floats-cbmc-regression/float5_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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 /storage/repos/svcomp/c/floats-cbmc-regression/float5_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 e03384737e8763104139cfd338bec2bd1e3e90b2 ....................................................................................................................................................................................................................... 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 /storage/repos/svcomp/c/floats-cbmc-regression/float5_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 e03384737e8763104139cfd338bec2bd1e3e90b2 ......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 07:56:32,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:56:32,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:56:32,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:56:32,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:56:32,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:56:32,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:56:32,338 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:56:32,340 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:56:32,341 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:56:32,342 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:56:32,342 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:56:32,343 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:56:32,347 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:56:32,348 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:56:32,349 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:56:32,350 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:56:32,353 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:56:32,358 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:56:32,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:56:32,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:56:32,368 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:56:32,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:56:32,373 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:56:32,373 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:56:32,374 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:56:32,375 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:56:32,376 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:56:32,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:56:32,377 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:56:32,378 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:56:32,378 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:56:32,378 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:56:32,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:56:32,379 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:56:32,380 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:56:32,380 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 07:56:32,408 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:56:32,408 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:56:32,410 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:56:32,410 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:56:32,410 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:56:32,410 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:56:32,411 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:56:32,411 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 07:56:32,411 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:56:32,411 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:56:32,411 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:56:32,411 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:56:32,412 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:56:32,415 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:56:32,415 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:56:32,415 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:56:32,415 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:56:32,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:56:32,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:56:32,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:56:32,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:56:32,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:56:32,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:56:32,418 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:56:32,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:56:32,418 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 07:56:32,419 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:56:32,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 07:56:32,419 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 -> e03384737e8763104139cfd338bec2bd1e3e90b2 [2019-01-12 07:56:32,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:56:32,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:56:32,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:56:32,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:56:32,503 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:56:32,503 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cbmc-regression/float5_true-unreach-call_true-termination.i [2019-01-12 07:56:32,565 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c921913/6cf19ebe31314213beec3447dc53cdc6/FLAG51ced8d2f [2019-01-12 07:56:33,033 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:56:33,033 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cbmc-regression/float5_true-unreach-call_true-termination.i [2019-01-12 07:56:33,039 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c921913/6cf19ebe31314213beec3447dc53cdc6/FLAG51ced8d2f [2019-01-12 07:56:33,410 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c921913/6cf19ebe31314213beec3447dc53cdc6 [2019-01-12 07:56:33,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:56:33,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:56:33,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:33,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:56:33,420 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:56:33,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f585042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33, skipping insertion in model container [2019-01-12 07:56:33,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:56:33,449 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:56:33,675 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:33,681 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:56:33,703 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:33,715 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:56:33,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33 WrapperNode [2019-01-12 07:56:33,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:33,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:33,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:56:33,716 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:56:33,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:33,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:56:33,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:56:33,746 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:56:33,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (1/1) ... [2019-01-12 07:56:33,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:56:33,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:56:33,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:56:33,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:56:33,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (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 [2019-01-12 07:56:33,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:56:33,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:56:34,045 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:56:34,046 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:56:34,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:34 BoogieIcfgContainer [2019-01-12 07:56:34,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:56:34,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:56:34,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:56:34,051 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:56:34,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:56:33" (1/3) ... [2019-01-12 07:56:34,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5099757b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:34, skipping insertion in model container [2019-01-12 07:56:34,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:33" (2/3) ... [2019-01-12 07:56:34,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5099757b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:34, skipping insertion in model container [2019-01-12 07:56:34,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:34" (3/3) ... [2019-01-12 07:56:34,054 INFO L112 eAbstractionObserver]: Analyzing ICFG float5_true-unreach-call_true-termination.i [2019-01-12 07:56:34,064 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:56:34,073 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 07:56:34,088 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 07:56:34,127 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:56:34,127 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:56:34,127 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:56:34,128 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:56:34,128 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:56:34,128 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:56:34,128 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:56:34,128 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:56:34,128 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:56:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-01-12 07:56:34,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-12 07:56:34,148 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:34,149 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-12 07:56:34,151 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-01-12 07:56:34,159 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 07:56:34,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 07:56:34,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:56:34,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:34,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 07:56:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:56:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 07:56:34,270 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 07:56:34,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:56:34 BoogieIcfgContainer [2019-01-12 07:56:34,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:56:34,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:56:34,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:56:34,292 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:56:34,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:34" (3/4) ... [2019-01-12 07:56:34,296 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 07:56:34,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:56:34,297 INFO L168 Benchmark]: Toolchain (without parser) took 882.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:34,299 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:34,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.41 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:34,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.85 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:34,301 INFO L168 Benchmark]: Boogie Preprocessor took 15.67 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:34,302 INFO L168 Benchmark]: RCFGBuilder took 284.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:34,303 INFO L168 Benchmark]: TraceAbstraction took 243.31 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:34,304 INFO L168 Benchmark]: Witness Printer took 4.72 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. [2019-01-12 07:56:34,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.41 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.85 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.67 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 284.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 243.31 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.72 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: 12]: 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 8, overapproximation of someBinaryArithmeticFLOAToperation at line 10. Possible FailurePath: [L6] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L6] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L9] b=a [L10] a/=2 [L11] a*=2 [L12] COND TRUE !(a==b) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 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=7occurred 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, 3 NumberOfCodeBlocks, 3 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 0.1.24-0ed9222-m [2019-01-12 07:56:36,552 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 07:56:36,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 07:56:36,565 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 07:56:36,566 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 07:56:36,567 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 07:56:36,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 07:56:36,571 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 07:56:36,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 07:56:36,574 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 07:56:36,575 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 07:56:36,575 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 07:56:36,576 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 07:56:36,577 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 07:56:36,579 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 07:56:36,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 07:56:36,580 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 07:56:36,582 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 07:56:36,584 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 07:56:36,586 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 07:56:36,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 07:56:36,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 07:56:36,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 07:56:36,592 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 07:56:36,592 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 07:56:36,593 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 07:56:36,594 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 07:56:36,595 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 07:56:36,596 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 07:56:36,597 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 07:56:36,597 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 07:56:36,598 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 07:56:36,598 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 07:56:36,598 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 07:56:36,599 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 07:56:36,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 07:56:36,601 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 07:56:36,629 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 07:56:36,630 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 07:56:36,631 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 07:56:36,631 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 07:56:36,632 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 07:56:36,632 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 07:56:36,632 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 07:56:36,634 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 07:56:36,634 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 07:56:36,634 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 07:56:36,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 07:56:36,636 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 07:56:36,636 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 07:56:36,636 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 07:56:36,636 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 07:56:36,636 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 07:56:36,636 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 07:56:36,639 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 07:56:36,639 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 07:56:36,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 07:56:36,639 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 07:56:36,639 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 07:56:36,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 07:56:36,640 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 07:56:36,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 07:56:36,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 07:56:36,640 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 07:56:36,641 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 07:56:36,643 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 07:56:36,643 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 07:56:36,643 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 -> e03384737e8763104139cfd338bec2bd1e3e90b2 [2019-01-12 07:56:36,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 07:56:36,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 07:56:36,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 07:56:36,730 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 07:56:36,731 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 07:56:36,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cbmc-regression/float5_true-unreach-call_true-termination.i [2019-01-12 07:56:36,800 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233945a2e/1b490f30045c453aa6e549cc40323bf5/FLAG408b4f2bb [2019-01-12 07:56:37,201 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 07:56:37,202 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cbmc-regression/float5_true-unreach-call_true-termination.i [2019-01-12 07:56:37,210 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233945a2e/1b490f30045c453aa6e549cc40323bf5/FLAG408b4f2bb [2019-01-12 07:56:37,596 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233945a2e/1b490f30045c453aa6e549cc40323bf5 [2019-01-12 07:56:37,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 07:56:37,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 07:56:37,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:37,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 07:56:37,605 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 07:56:37,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df7187c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37, skipping insertion in model container [2019-01-12 07:56:37,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 07:56:37,633 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 07:56:37,810 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:37,826 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 07:56:37,843 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 07:56:37,859 INFO L195 MainTranslator]: Completed translation [2019-01-12 07:56:37,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37 WrapperNode [2019-01-12 07:56:37,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 07:56:37,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:37,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 07:56:37,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 07:56:37,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 07:56:37,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 07:56:37,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 07:56:37,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 07:56:37,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (1/1) ... [2019-01-12 07:56:37,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 07:56:37,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 07:56:37,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 07:56:37,920 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 07:56:37,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (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 [2019-01-12 07:56:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 07:56:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 07:56:38,926 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 07:56:38,926 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 07:56:38,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:38 BoogieIcfgContainer [2019-01-12 07:56:38,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 07:56:38,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 07:56:38,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 07:56:38,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 07:56:38,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 07:56:37" (1/3) ... [2019-01-12 07:56:38,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd76666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:38, skipping insertion in model container [2019-01-12 07:56:38,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 07:56:37" (2/3) ... [2019-01-12 07:56:38,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd76666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 07:56:38, skipping insertion in model container [2019-01-12 07:56:38,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:38" (3/3) ... [2019-01-12 07:56:38,938 INFO L112 eAbstractionObserver]: Analyzing ICFG float5_true-unreach-call_true-termination.i [2019-01-12 07:56:38,945 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 07:56:38,951 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 07:56:38,964 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 07:56:38,993 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 07:56:38,993 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 07:56:38,994 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 07:56:38,994 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 07:56:38,994 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 07:56:38,994 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 07:56:38,995 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 07:56:38,995 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 07:56:38,995 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 07:56:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-01-12 07:56:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-12 07:56:39,015 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 07:56:39,016 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-12 07:56:39,019 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 07:56:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 07:56:39,024 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-01-12 07:56:39,027 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 07:56:39,028 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 [2019-01-12 07:56:39,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 07:56:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 07:56:39,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 07:56:53,684 WARN L181 SmtUtils]: Spent 13.65 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-01-12 07:56:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 07:56:54,866 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 07:56:54,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 07:56:54,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 07:56:54,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 07:56:54,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 07:56:54,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:54,895 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-01-12 07:56:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 07:56:56,211 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-01-12 07:56:56,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 07:56:56,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-12 07:56:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 07:56:56,236 INFO L225 Difference]: With dead ends: 11 [2019-01-12 07:56:56,236 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 07:56:56,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 07:56:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 07:56:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 07:56:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 07:56:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 07:56:56,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-12 07:56:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 07:56:56,265 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 07:56:56,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 07:56:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 07:56:56,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 07:56:56,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 07:56:56,273 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 07:56:56,273 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 07:56:56,273 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 07:56:56,274 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 07:56:56,274 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-01-12 07:56:56,274 INFO L448 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-01-12 07:56:56,274 INFO L448 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-01-12 07:56:56,274 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 13) no Hoare annotation was computed. [2019-01-12 07:56:56,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 07:56:56 BoogieIcfgContainer [2019-01-12 07:56:56,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 07:56:56,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 07:56:56,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 07:56:56,279 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 07:56:56,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 07:56:38" (3/4) ... [2019-01-12 07:56:56,285 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 07:56:56,296 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-12 07:56:56,296 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 07:56:56,296 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-12 07:56:56,341 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 07:56:56,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 07:56:56,343 INFO L168 Benchmark]: Toolchain (without parser) took 18743.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:56,344 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:56,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.25 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:56,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:56,346 INFO L168 Benchmark]: Boogie Preprocessor took 24.03 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 07:56:56,347 INFO L168 Benchmark]: RCFGBuilder took 1007.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:56,348 INFO L168 Benchmark]: TraceAbstraction took 17350.35 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-01-12 07:56:56,349 INFO L168 Benchmark]: Witness Printer took 62.47 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. [2019-01-12 07:56:56,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.25 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.03 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1007.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17350.35 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Witness Printer took 62.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 1 procedures, 8 locations, 1 error locations. SAFE Result, 17.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 2 NumberOfNonLiveVariables, 8 ConjunctsInSsa, 4 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...