/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-cdfpl/square_8_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-cdfpl/square_8_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 847ec304644081d839ca7e80209d45b391ec9937 .................................................................................................................................................................................................................... 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-cdfpl/square_8_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 847ec304644081d839ca7e80209d45b391ec9937 .............................................................................................................................................................................................................................................................. 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 13:44:06,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:44:06,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:44:06,211 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:44:06,214 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:44:06,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:44:06,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:44:06,219 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:44:06,220 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:44:06,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:44:06,222 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:44:06,223 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:44:06,224 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:44:06,225 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:44:06,226 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:44:06,227 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:44:06,228 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:44:06,230 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:44:06,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:44:06,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:44:06,236 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:44:06,237 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:44:06,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:44:06,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:44:06,241 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:44:06,242 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:44:06,243 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:44:06,244 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:44:06,245 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:44:06,246 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:44:06,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:44:06,248 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:44:06,248 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:44:06,248 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:44:06,250 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:44:06,250 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:44:06,251 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:44:06,273 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:44:06,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:44:06,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:44:06,275 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:44:06,276 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:44:06,277 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:44:06,278 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:44:06,278 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:44:06,278 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:44:06,278 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:44:06,279 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:44:06,279 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:44:06,279 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:44:06,279 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:44:06,279 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:44:06,280 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:44:06,280 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:44:06,280 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:44:06,280 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:44:06,282 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:44:06,283 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:44:06,283 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:44:06,283 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:44:06,283 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:44:06,284 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:44:06,284 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:44:06,285 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:44:06,285 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:44:06,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:44:06,285 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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2018-09-20 13:44:06,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:44:06,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:44:06,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:44:06,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:44:06,399 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:44:06,400 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-09-20 13:44:06,761 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c514146/24865cdc16f7450f81caa14a49fe3b4d/FLAGcccf9fd17 [2018-09-20 13:44:06,936 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:44:06,937 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-09-20 13:44:06,948 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c514146/24865cdc16f7450f81caa14a49fe3b4d/FLAGcccf9fd17 [2018-09-20 13:44:06,981 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c514146/24865cdc16f7450f81caa14a49fe3b4d [2018-09-20 13:44:06,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:44:06,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:44:06,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:44:06,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:44:07,005 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:44:07,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:44:06" (1/1) ... [2018-09-20 13:44:07,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f68119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07, skipping insertion in model container [2018-09-20 13:44:07,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:44:06" (1/1) ... [2018-09-20 13:44:07,025 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:44:07,261 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:44:07,281 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:44:07,294 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:44:07,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07 WrapperNode [2018-09-20 13:44:07,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:44:07,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:44:07,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:44:07,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:44:07,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (1/1) ... [2018-09-20 13:44:07,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:44:07,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:44:07,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:44:07,357 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:44:07,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (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 13:44:07,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:44:07,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:44:07,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:44:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:44:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:44:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:44:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:44:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:44:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:44:07,705 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:44:07,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:07 BoogieIcfgContainer [2018-09-20 13:44:07,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:44:07,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:44:07,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:44:07,712 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:44:07,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:44:06" (1/3) ... [2018-09-20 13:44:07,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e35de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:44:07, skipping insertion in model container [2018-09-20 13:44:07,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:07" (2/3) ... [2018-09-20 13:44:07,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e35de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:44:07, skipping insertion in model container [2018-09-20 13:44:07,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:07" (3/3) ... [2018-09-20 13:44:07,717 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8_true-unreach-call_true-termination.i [2018-09-20 13:44:07,729 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:44:07,737 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:44:07,791 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:44:07,791 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:44:07,792 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:44:07,792 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:44:07,792 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:44:07,792 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:44:07,792 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:44:07,793 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:44:07,793 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:44:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:44:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:44:07,819 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:44:07,820 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:44:07,823 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:44:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-09-20 13:44:07,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:44:07,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:44:07,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:44:07,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:44:07,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:44:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:44:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:44:07,939 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:44:07,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:44:07 BoogieIcfgContainer [2018-09-20 13:44:07,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:44:07,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:44:07,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:44:07,961 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:44:07,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:07" (3/4) ... [2018-09-20 13:44:07,968 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:44:07,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:44:07,970 INFO L168 Benchmark]: Toolchain (without parser) took 981.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:44:07,974 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:44:07,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.97 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:44:07,977 INFO L168 Benchmark]: Boogie Preprocessor took 42.58 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:44:07,981 INFO L168 Benchmark]: RCFGBuilder took 349.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-09-20 13:44:07,982 INFO L168 Benchmark]: TraceAbstraction took 252.98 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-09-20 13:44:07,986 INFO L168 Benchmark]: Witness Printer took 8.12 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 13:44:07,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.97 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.58 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 349.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 252.98 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Witness Printer took 8.12 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: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - 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, 7 NumberOfCodeBlocks, 7 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 13:44:10,463 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:44:10,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:44:10,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:44:10,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:44:10,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:44:10,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:44:10,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:44:10,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:44:10,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:44:10,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:44:10,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:44:10,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:44:10,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:44:10,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:44:10,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:44:10,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:44:10,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:44:10,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:44:10,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:44:10,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:44:10,507 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:44:10,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:44:10,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:44:10,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:44:10,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:44:10,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:44:10,514 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:44:10,515 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:44:10,516 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:44:10,516 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:44:10,517 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:44:10,518 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:44:10,518 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:44:10,519 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:44:10,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:44:10,521 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:44:10,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:44:10,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:44:10,545 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:44:10,545 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:44:10,546 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:44:10,546 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:44:10,546 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:44:10,547 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:44:10,547 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:44:10,547 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:44:10,547 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:44:10,548 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:44:10,548 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:44:10,549 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:44:10,549 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:44:10,549 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:44:10,549 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:44:10,550 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:44:10,550 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:44:10,550 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:44:10,551 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:44:10,551 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:44:10,551 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:44:10,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:44:10,551 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:44:10,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:44:10,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:44:10,552 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:44:10,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:44:10,552 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:44:10,554 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:44:10,554 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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2018-09-20 13:44:10,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:44:10,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:44:10,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:44:10,644 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:44:10,644 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:44:10,646 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-09-20 13:44:10,996 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7245c684/fa55798d62ba48ddba5e9551e8104704/FLAG869e6e7e7 [2018-09-20 13:44:11,200 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:44:11,200 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-09-20 13:44:11,206 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7245c684/fa55798d62ba48ddba5e9551e8104704/FLAG869e6e7e7 [2018-09-20 13:44:11,225 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7245c684/fa55798d62ba48ddba5e9551e8104704 [2018-09-20 13:44:11,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:44:11,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:44:11,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:44:11,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:44:11,242 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:44:11,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b13d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11, skipping insertion in model container [2018-09-20 13:44:11,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,259 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:44:11,463 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:44:11,485 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:44:11,492 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:44:11,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11 WrapperNode [2018-09-20 13:44:11,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:44:11,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:44:11,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:44:11,510 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:44:11,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (1/1) ... [2018-09-20 13:44:11,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:44:11,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:44:11,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:44:11,543 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:44:11,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (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 13:44:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:44:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:44:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:44:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:44:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:44:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:44:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:44:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:44:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:44:13,953 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:44:13,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:13 BoogieIcfgContainer [2018-09-20 13:44:13,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:44:13,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:44:13,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:44:13,960 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:44:13,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:44:11" (1/3) ... [2018-09-20 13:44:13,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a30b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:44:13, skipping insertion in model container [2018-09-20 13:44:13,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:11" (2/3) ... [2018-09-20 13:44:13,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a30b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:44:13, skipping insertion in model container [2018-09-20 13:44:13,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:13" (3/3) ... [2018-09-20 13:44:13,966 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8_true-unreach-call_true-termination.i [2018-09-20 13:44:13,977 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:44:13,986 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:44:14,035 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:44:14,036 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:44:14,036 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:44:14,036 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:44:14,036 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:44:14,036 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:44:14,037 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:44:14,037 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:44:14,037 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:44:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:44:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:44:14,065 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:44:14,066 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:44:14,069 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:44:14,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-09-20 13:44:14,081 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:44:14,081 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 13:44:14,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:45:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:45:29,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:45:31,342 WARN L797 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (= c_main_~result~0 (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.lt main_~IN~0 .cse0) (fp.geq main_~IN~0 (_ +zero 8 24))))) is different from false [2018-09-20 13:45:33,444 WARN L819 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (= c_main_~result~0 (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.lt main_~IN~0 .cse0) (fp.geq main_~IN~0 (_ +zero 8 24))))) is different from true [2018-09-20 13:45:46,088 WARN L797 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0) (not (fp.geq (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) v_prenex_1)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) (_ +zero 8 24)))))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (fp.lt main_~IN~0 .cse1) (not (fp.lt (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse1 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) ((_ to_fp 8 24) RNE (/ 3.0 2.0)))) (fp.geq main_~IN~0 (_ +zero 8 24)))))) is different from false [2018-09-20 13:45:48,187 WARN L819 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0) (not (fp.geq (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) v_prenex_1)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) (_ +zero 8 24)))))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (fp.lt main_~IN~0 .cse1) (not (fp.lt (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse1 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) ((_ to_fp 8 24) RNE (/ 3.0 2.0)))) (fp.geq main_~IN~0 (_ +zero 8 24)))))) is different from true [2018-09-20 13:45:48,193 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 13:45:48,193 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:45:48,214 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:45:48,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 13:45:48,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 13:45:48,235 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 13:45:48,236 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-09-20 13:45:48,239 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-09-20 13:45:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:45:48,258 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-09-20 13:45:48,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 13:45:48,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-09-20 13:45:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:45:48,268 INFO L225 Difference]: With dead ends: 18 [2018-09-20 13:45:48,269 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 13:45:48,273 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-09-20 13:45:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 13:45:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 13:45:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 13:45:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 13:45:48,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-09-20 13:45:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:45:48,304 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 13:45:48,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 13:45:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 13:45:48,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 13:45:48,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 13:45:48,389 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-20 13:45:48,389 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:45:48,389 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:45:48,389 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 13:45:48,390 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 13:45:48,390 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 13:45:48,390 INFO L426 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-09-20 13:45:48,395 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-09-20 13:45:48,395 INFO L426 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-09-20 13:45:48,395 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: true [2018-09-20 13:45:48,395 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 4 18) no Hoare annotation was computed. [2018-09-20 13:45:48,396 INFO L426 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-09-20 13:45:48,397 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2018-09-20 13:45:48,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:45:48 BoogieIcfgContainer [2018-09-20 13:45:48,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:45:48,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:45:48,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:45:48,405 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:45:48,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:13" (3/4) ... [2018-09-20 13:45:48,412 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 13:45:48,421 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 13:45:48,422 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 13:45:48,428 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-20 13:45:48,429 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-20 13:45:48,429 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 13:45:48,486 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:45:48,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:45:48,487 INFO L168 Benchmark]: Toolchain (without parser) took 97257.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -144.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:48,489 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 13:45:48,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.32 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 13:45:48,491 INFO L168 Benchmark]: Boogie Preprocessor took 32.34 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 13:45:48,491 INFO L168 Benchmark]: RCFGBuilder took 2411.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:48,492 INFO L168 Benchmark]: TraceAbstraction took 94447.69 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. [2018-09-20 13:45:48,493 INFO L168 Benchmark]: Witness Printer took 82.76 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-09-20 13:45:48,499 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 275.32 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 32.34 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 2411.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 94447.69 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 82.76 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 94.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4s 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, 74.9s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 2 QuantifiedInterpolants, 1224 SizeOfPredicates, 3 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 5 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...