./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e03384737e8763104139cfd338bec2bd1e3e90b2 .......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e03384737e8763104139cfd338bec2bd1e3e90b2 ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:34:35,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:34:35,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:34:35,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:34:35,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:34:35,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:34:35,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:34:35,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:34:35,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:34:35,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:34:35,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:34:35,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:34:35,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:34:35,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:34:35,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:34:35,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:34:35,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:34:35,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:34:35,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:34:35,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:34:35,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:34:35,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:34:35,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:34:35,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:34:35,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:34:35,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:34:35,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:34:35,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:34:35,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:34:35,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:34:35,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:34:35,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:34:35,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:34:35,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:34:35,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:34:35,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:34:35,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:34:35,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:34:35,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:34:35,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:34:35,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:34:35,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:34:35,680 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:34:35,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:34:35,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:34:35,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:34:35,682 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:34:35,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:34:35,682 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:34:35,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:34:35,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:34:35,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:34:35,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:34:35,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:34:35,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:34:35,684 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:34:35,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:34:35,684 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:34:35,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:34:35,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:34:35,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:34:35,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:34:35,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:34:35,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:34:35,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:34:35,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:34:35,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:34:35,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:34:35,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:34:35,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:34:35,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2019-11-27 23:34:35,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:34:36,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:34:36,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:34:36,010 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:34:36,011 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:34:36,012 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-11-27 23:34:36,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ad05b5b/8450606601224e8c8dc1fe848c9d5de9/FLAGa64024ba7 [2019-11-27 23:34:36,441 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:34:36,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-11-27 23:34:36,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ad05b5b/8450606601224e8c8dc1fe848c9d5de9/FLAGa64024ba7 [2019-11-27 23:34:36,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ad05b5b/8450606601224e8c8dc1fe848c9d5de9 [2019-11-27 23:34:36,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:34:36,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:34:36,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:36,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:34:36,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:34:36,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:36" (1/1) ... [2019-11-27 23:34:36,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550650fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:36, skipping insertion in model container [2019-11-27 23:34:36,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:36" (1/1) ... [2019-11-27 23:34:36,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:34:36,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:34:37,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:37,162 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:34:37,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:37,199 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:34:37,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37 WrapperNode [2019-11-27 23:34:37,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:37,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:37,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:34:37,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:34:37,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:37,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:34:37,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:34:37,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:34:37,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (1/1) ... [2019-11-27 23:34:37,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:34:37,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:34:37,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:34:37,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:34:37,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (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 [2019-11-27 23:34:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:34:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:34:37,510 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:34:37,511 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-27 23:34:37,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:37 BoogieIcfgContainer [2019-11-27 23:34:37,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:34:37,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:34:37,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:34:37,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:34:37,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:34:36" (1/3) ... [2019-11-27 23:34:37,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63991c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:37, skipping insertion in model container [2019-11-27 23:34:37,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:37" (2/3) ... [2019-11-27 23:34:37,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63991c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:37, skipping insertion in model container [2019-11-27 23:34:37,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:37" (3/3) ... [2019-11-27 23:34:37,521 INFO L109 eAbstractionObserver]: Analyzing ICFG float5.c [2019-11-27 23:34:37,531 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:34:37,538 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:34:37,550 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:34:37,576 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:34:37,576 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:34:37,577 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:34:37,577 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:34:37,577 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:34:37,577 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:34:37,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:34:37,580 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:34:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-27 23:34:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-27 23:34:37,603 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:34:37,604 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-27 23:34:37,604 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:34:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:34:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-27 23:34:37,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:34:37,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972698331] [2019-11-27 23:34:37,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:34:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:34:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:34:37,763 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:34:37,764 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:34:37,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:34:37 BoogieIcfgContainer [2019-11-27 23:34:37,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:34:37,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:34:37,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:34:37,778 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:34:37,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:37" (3/4) ... [2019-11-27 23:34:37,782 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:34:37,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:34:37,785 INFO L168 Benchmark]: Toolchain (without parser) took 891.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -142.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:34:37,786 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:34:37,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.44 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:37,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:37,791 INFO L168 Benchmark]: Boogie Preprocessor took 18.40 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. [2019-11-27 23:34:37,792 INFO L168 Benchmark]: RCFGBuilder took 202.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:37,793 INFO L168 Benchmark]: TraceAbstraction took 263.49 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:37,794 INFO L168 Benchmark]: Witness Printer took 5.16 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. [2019-11-27 23:34:37,806 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.44 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 89.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.40 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. * RCFGBuilder took 202.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 263.49 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.16 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. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, 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 DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-30f4e4a [2019-11-27 23:34:39,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:34:39,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:34:39,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:34:39,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:34:39,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:34:39,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:34:39,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:34:39,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:34:39,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:34:39,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:34:39,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:34:39,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:34:39,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:34:39,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:34:39,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:34:39,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:34:39,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:34:39,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:34:39,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:34:39,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:34:39,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:34:39,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:34:39,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:34:39,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:34:39,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:34:39,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:34:39,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:34:39,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:34:39,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:34:39,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:34:39,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:34:39,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:34:39,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:34:39,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:34:39,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:34:39,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:34:39,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:34:39,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:34:39,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:34:39,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:34:39,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:34:39,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:34:39,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:34:39,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:34:39,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:34:39,915 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:34:39,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:34:39,916 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:34:39,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:34:39,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:34:39,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:34:39,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:34:39,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:34:39,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:34:39,919 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:34:39,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:34:39,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:34:39,919 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:34:39,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:34:39,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:34:39,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:34:39,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:34:39,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:34:39,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:34:39,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:34:39,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:34:39,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:34:39,926 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:34:39,926 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:34:39,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:34:39,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:34:39,927 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 [2019-11-27 23:34:40,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:34:40,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:34:40,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:34:40,256 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:34:40,256 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:34:40,257 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-11-27 23:34:40,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ded7050/c624bc8c0ea94a92a2a5fb1d75194403/FLAGdd7259020 [2019-11-27 23:34:40,726 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:34:40,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-11-27 23:34:40,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ded7050/c624bc8c0ea94a92a2a5fb1d75194403/FLAGdd7259020 [2019-11-27 23:34:41,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ded7050/c624bc8c0ea94a92a2a5fb1d75194403 [2019-11-27 23:34:41,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:34:41,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:34:41,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:41,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:34:41,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:34:41,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ceee9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41, skipping insertion in model container [2019-11-27 23:34:41,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:34:41,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:34:41,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:41,346 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:34:41,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:41,379 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:34:41,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41 WrapperNode [2019-11-27 23:34:41,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:41,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:41,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:34:41,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:34:41,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:41,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:34:41,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:34:41,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:34:41,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (1/1) ... [2019-11-27 23:34:41,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:34:41,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:34:41,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:34:41,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:34:41,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (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 [2019-11-27 23:34:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:34:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:34:42,160 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:34:42,161 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-27 23:34:42,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:42 BoogieIcfgContainer [2019-11-27 23:34:42,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:34:42,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:34:42,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:34:42,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:34:42,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:34:41" (1/3) ... [2019-11-27 23:34:42,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db7af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:42, skipping insertion in model container [2019-11-27 23:34:42,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:41" (2/3) ... [2019-11-27 23:34:42,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db7af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:42, skipping insertion in model container [2019-11-27 23:34:42,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:42" (3/3) ... [2019-11-27 23:34:42,169 INFO L109 eAbstractionObserver]: Analyzing ICFG float5.c [2019-11-27 23:34:42,179 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:34:42,185 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:34:42,196 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:34:42,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:34:42,218 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:34:42,218 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:34:42,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:34:42,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:34:42,219 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:34:42,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:34:42,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:34:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-27 23:34:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:34:42,234 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:34:42,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:34:42,235 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:34:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:34:42,240 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-27 23:34:42,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:34:42,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005518687] [2019-11-27 23:34:42,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:34:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:34:42,401 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-27 23:34:42,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:34:47,812 WARN L192 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-11-27 23:34:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:34:48,206 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:34:48,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-27 23:34:51,917 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| .cse0)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse0) .cse0) |v_ULTIMATE.start_main_#t~nondet1_4|)))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse1) .cse1)) |v_ULTIMATE.start_main_#t~nondet1_4|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse2) .cse2)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse3) .cse3)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse4) .cse4)) |v_ULTIMATE.start_main_#t~nondet1_4|)))) is different from true [2019-11-27 23:34:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:34:51,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005518687] [2019-11-27 23:34:51,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:34:51,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-27 23:34:51,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485270306] [2019-11-27 23:34:51,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:34:51,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:34:51,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:34:51,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2019-11-27 23:34:51,940 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 6 states. [2019-11-27 23:34:55,498 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| .cse0)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse0) .cse0) |v_ULTIMATE.start_main_#t~nondet1_4|)))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse1) .cse1)) |v_ULTIMATE.start_main_#t~nondet1_4|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse2) .cse2)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse3) .cse3)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse4) .cse4)) |v_ULTIMATE.start_main_#t~nondet1_4|)))) is different from true [2019-11-27 23:34:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:34:56,407 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-27 23:34:56,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:34:56,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-27 23:34:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:34:56,434 INFO L225 Difference]: With dead ends: 11 [2019-11-27 23:34:56,434 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:34:56,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2019-11-27 23:34:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:34:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:34:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:34:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:34:56,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-27 23:34:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:34:56,465 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:34:56,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:34:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:34:56,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:34:56,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:34:56,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:34:56,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:34:56,689 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:34:56,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:34:56,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:34:56,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-27 23:34:56,689 INFO L246 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-27 23:34:56,690 INFO L246 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-11-27 23:34:56,690 INFO L246 CegarLoopResult]: For program point L4(lines 4 13) no Hoare annotation was computed. [2019-11-27 23:34:56,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:34:56 BoogieIcfgContainer [2019-11-27 23:34:56,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:34:56,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:34:56,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:34:56,697 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:34:56,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:42" (3/4) ... [2019-11-27 23:34:56,701 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:34:56,712 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-27 23:34:56,712 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-27 23:34:56,713 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:34:56,748 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:34:56,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:34:56,750 INFO L168 Benchmark]: Toolchain (without parser) took 15602.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -107.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:56,751 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:34:56,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.77 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:56,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:56,753 INFO L168 Benchmark]: Boogie Preprocessor took 35.00 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. [2019-11-27 23:34:56,754 INFO L168 Benchmark]: RCFGBuilder took 653.35 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: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:56,755 INFO L168 Benchmark]: TraceAbstraction took 14533.73 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:56,756 INFO L168 Benchmark]: Witness Printer took 51.69 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:56,761 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.77 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 92.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.00 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. * RCFGBuilder took 653.35 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: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14533.73 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * Witness Printer took 51.69 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: 6.6 MB). Peak memory consumption was 6.6 MB. 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. Result: SAFE, OverallTime: 14.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6s 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 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 465 SizeOfPredicates, 3 NumberOfNonLiveVariables, 8 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...