./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.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/float-no-simp6.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 c87f23af740954e6de1a94dd09957e85cd60c58b ........................................................................................................................................................................................................................ 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/float-no-simp6.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 c87f23af740954e6de1a94dd09957e85cd60c58b ....................................................................................................................................................................................................................................................................................................................................................................... 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 23:34:07,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:34:07,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:34:07,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:34:07,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:34:07,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:34:07,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:34:07,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:34:07,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:34:07,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:34:07,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:34:07,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:34:07,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:34:07,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:34:07,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:34:07,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:34:07,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:34:07,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:34:07,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:34:07,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:34:07,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:34:07,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:34:07,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:34:07,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:34:07,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:34:07,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:34:07,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:34:07,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:34:07,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:34:07,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:34:07,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:34:07,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:34:07,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:34:07,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:34:07,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:34:07,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:34:07,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:34:07,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:34:07,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:34:07,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:34:07,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:34:07,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:34:07,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:34:07,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:34:07,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:34:07,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:34:07,413 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:34:07,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:34:07,413 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:34:07,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:34:07,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:34:07,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:34:07,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:34:07,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:34:07,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:34:07,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:34:07,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:34:07,416 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:34:07,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:34:07,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:34:07,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:34:07,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:34:07,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:34:07,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:34:07,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:34:07,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:34:07,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:34:07,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:34:07,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:34:07,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:34:07,420 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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-27 23:34:07,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:34:07,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:34:07,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:34:07,725 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:34:07,726 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:34:07,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-27 23:34:07,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46815b0ff/2b93c392766944bf895b31e06a426002/FLAG3d13c9715 [2019-11-27 23:34:08,235 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:34:08,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-27 23:34:08,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46815b0ff/2b93c392766944bf895b31e06a426002/FLAG3d13c9715 [2019-11-27 23:34:08,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46815b0ff/2b93c392766944bf895b31e06a426002 [2019-11-27 23:34:08,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:34:08,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:34:08,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:08,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:34:08,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:34:08,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dffc5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08, skipping insertion in model container [2019-11-27 23:34:08,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:34:08,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:34:08,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:08,827 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:34:08,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:08,863 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:34:08,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08 WrapperNode [2019-11-27 23:34:08,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:08,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:08,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:34:08,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:34:08,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:08,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:34:08,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:34:08,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:34:08,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (1/1) ... [2019-11-27 23:34:08,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:34:08,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:34:08,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:34:08,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:34:08,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (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 23:34:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:34:09,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:34:09,171 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:34:09,172 INFO L297 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-27 23:34:09,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:09 BoogieIcfgContainer [2019-11-27 23:34:09,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:34:09,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:34:09,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:34:09,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:34:09,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:34:08" (1/3) ... [2019-11-27 23:34:09,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebf84a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:09, skipping insertion in model container [2019-11-27 23:34:09,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:08" (2/3) ... [2019-11-27 23:34:09,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebf84a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:09, skipping insertion in model container [2019-11-27 23:34:09,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:09" (3/3) ... [2019-11-27 23:34:09,181 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-27 23:34:09,188 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:34:09,193 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-27 23:34:09,203 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-27 23:34:09,225 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:34:09,226 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:34:09,226 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:34:09,226 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:34:09,226 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:34:09,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:34:09,227 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:34:09,227 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:34:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-27 23:34:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-27 23:34:09,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:34:09,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-27 23:34:09,249 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:34:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:34:09,256 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-27 23:34:09,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:34:09,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528316996] [2019-11-27 23:34:09,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:34:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:34:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:34:09,349 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:34:09,350 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:34:09,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:34:09 BoogieIcfgContainer [2019-11-27 23:34:09,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:34:09,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:34:09,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:34:09,365 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:34:09,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:09" (3/4) ... [2019-11-27 23:34:09,369 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:34:09,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:34:09,371 INFO L168 Benchmark]: Toolchain (without parser) took 753.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:34:09,372 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:34:09,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.70 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:09,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:09,375 INFO L168 Benchmark]: Boogie Preprocessor took 16.27 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 23:34:09,376 INFO L168 Benchmark]: RCFGBuilder took 201.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:09,377 INFO L168 Benchmark]: TraceAbstraction took 190.42 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:09,377 INFO L168 Benchmark]: Witness Printer took 3.85 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 23:34:09,382 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.70 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 90.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.27 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 201.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 190.42 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.85 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: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; [L23] COND TRUE !(res == 0x1.0p-126f) [L23] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 3 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=15occurred 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 23:34:11,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:34:11,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:34:11,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:34:11,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:34:11,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:34:11,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:34:11,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:34:11,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:34:11,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:34:11,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:34:11,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:34:11,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:34:11,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:34:11,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:34:11,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:34:11,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:34:11,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:34:11,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:34:11,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:34:11,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:34:11,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:34:11,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:34:11,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:34:11,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:34:11,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:34:11,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:34:11,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:34:11,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:34:11,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:34:11,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:34:11,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:34:11,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:34:11,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:34:11,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:34:11,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:34:11,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:34:11,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:34:11,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:34:11,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:34:11,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:34:11,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:34:11,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:34:11,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:34:11,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:34:11,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:34:11,322 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:34:11,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:34:11,322 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:34:11,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:34:11,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:34:11,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:34:11,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:34:11,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:34:11,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:34:11,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:34:11,325 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:34:11,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:34:11,325 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:34:11,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:34:11,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:34:11,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:34:11,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:34:11,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:34:11,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:34:11,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:34:11,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:34:11,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:34:11,328 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:34:11,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:34:11,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:34:11,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:34:11,329 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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-27 23:34:11,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:34:11,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:34:11,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:34:11,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:34:11,640 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:34:11,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-27 23:34:11,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5395b3ad4/d111f8465e4e417fb367eae781b7fc42/FLAG075853181 [2019-11-27 23:34:12,091 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:34:12,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-27 23:34:12,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5395b3ad4/d111f8465e4e417fb367eae781b7fc42/FLAG075853181 [2019-11-27 23:34:12,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5395b3ad4/d111f8465e4e417fb367eae781b7fc42 [2019-11-27 23:34:12,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:34:12,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:34:12,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:12,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:34:12,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:34:12,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553315ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12, skipping insertion in model container [2019-11-27 23:34:12,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:34:12,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:34:12,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:12,751 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:34:12,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:34:12,786 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:34:12,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12 WrapperNode [2019-11-27 23:34:12,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:34:12,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:12,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:34:12,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:34:12,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:34:12,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:34:12,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:34:12,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:34:12,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (1/1) ... [2019-11-27 23:34:12,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:34:12,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:34:12,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:34:12,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:34:12,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (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 23:34:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:34:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:34:13,829 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:34:13,833 INFO L297 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-27 23:34:13,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:13 BoogieIcfgContainer [2019-11-27 23:34:13,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:34:13,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:34:13,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:34:13,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:34:13,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:34:12" (1/3) ... [2019-11-27 23:34:13,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228f186e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:13, skipping insertion in model container [2019-11-27 23:34:13,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:34:12" (2/3) ... [2019-11-27 23:34:13,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228f186e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:34:13, skipping insertion in model container [2019-11-27 23:34:13,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:13" (3/3) ... [2019-11-27 23:34:13,862 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-27 23:34:13,882 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:34:13,890 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-27 23:34:13,907 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-27 23:34:13,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:34:13,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:34:13,948 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:34:13,948 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:34:13,949 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:34:13,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:34:13,949 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:34:13,950 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:34:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-27 23:34:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:34:14,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:34:14,003 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:34:14,003 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:34:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:34:14,010 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-27 23:34:14,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:34:14,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073371380] [2019-11-27 23:34:14,024 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 23:34:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:34:14,186 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-27 23:34:14,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:34:14,267 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 23:34:14,267 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:34:14,320 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 23:34:14,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073371380] [2019-11-27 23:34:14,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:34:14,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-27 23:34:14,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593243859] [2019-11-27 23:34:14,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:34:14,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:34:14,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:34:14,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:34:14,347 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-27 23:34:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:34:15,021 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-27 23:34:15,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:34:15,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-27 23:34:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:34:15,031 INFO L225 Difference]: With dead ends: 27 [2019-11-27 23:34:15,032 INFO L226 Difference]: Without dead ends: 11 [2019-11-27 23:34:15,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:34:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-27 23:34:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-27 23:34:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-27 23:34:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-11-27 23:34:15,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2019-11-27 23:34:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:34:15,061 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-11-27 23:34:15,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:34:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-11-27 23:34:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:34:15,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:34:15,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 23:34:15,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:34:15,270 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:34:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:34:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-11-27 23:34:15,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:34:15,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3604467] [2019-11-27 23:34:15,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 23:34:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:34:15,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-27 23:34:15,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:34:15,542 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 23:34:15,543 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:34:15,596 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 23:34:15,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3604467] [2019-11-27 23:34:15,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:34:15,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-27 23:34:15,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653749550] [2019-11-27 23:34:15,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:34:15,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:34:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:34:15,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:34:15,600 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2019-11-27 23:34:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:34:16,004 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-27 23:34:16,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:34:16,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-27 23:34:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:34:16,005 INFO L225 Difference]: With dead ends: 11 [2019-11-27 23:34:16,005 INFO L226 Difference]: Without dead ends: 9 [2019-11-27 23:34:16,007 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:34:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-27 23:34:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-27 23:34:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-27 23:34:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-11-27 23:34:16,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2019-11-27 23:34:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:34:16,010 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-11-27 23:34:16,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:34:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-11-27 23:34:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:34:16,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:34:16,011 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:34:16,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:34:16,221 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:34:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:34:16,222 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-11-27 23:34:16,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:34:16,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972432950] [2019-11-27 23:34:16,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-27 23:34:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:34:16,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-27 23:34:16,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:34:16,546 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 23:34:16,546 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:34:16,597 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 23:34:16,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972432950] [2019-11-27 23:34:16,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:34:16,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-27 23:34:16,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961061139] [2019-11-27 23:34:16,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:34:16,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:34:16,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:34:16,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:34:16,600 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2019-11-27 23:34:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:34:17,169 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-11-27 23:34:17,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:34:17,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-27 23:34:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:34:17,176 INFO L225 Difference]: With dead ends: 9 [2019-11-27 23:34:17,177 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:34:17,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:34:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:34:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:34:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:34:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:34:17,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-27 23:34:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:34:17,178 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:34:17,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:34:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:34:17,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:34:17,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:34:17,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:34:17,387 INFO L246 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2019-11-27 23:34:17,388 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:34:17,388 INFO L246 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-27 23:34:17,388 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-11-27 23:34:17,388 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-27 23:34:17,388 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-27 23:34:17,388 INFO L246 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point L36(lines 1 50) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point L3(lines 3 24) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point L26(lines 26 34) no Hoare annotation was computed. [2019-11-27 23:34:17,389 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2019-11-27 23:34:17,390 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-11-27 23:34:17,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:34:17 BoogieIcfgContainer [2019-11-27 23:34:17,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:34:17,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:34:17,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:34:17,396 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:34:17,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:34:13" (3/4) ... [2019-11-27 23:34:17,406 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:34:17,419 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-27 23:34:17,419 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-27 23:34:17,460 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:34:17,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:34:17,463 INFO L168 Benchmark]: Toolchain (without parser) took 4931.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -93.8 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:17,464 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 23:34:17,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.77 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 23:34:17,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:17,466 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 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 23:34:17,467 INFO L168 Benchmark]: RCFGBuilder took 929.17 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:17,468 INFO L168 Benchmark]: TraceAbstraction took 3558.68 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: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:34:17,468 INFO L168 Benchmark]: Witness Printer took 65.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:34:17,472 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 254.77 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 93.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.83 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 929.17 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3558.68 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: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. * Witness Printer took 65.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 23]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Result: SAFE, OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 41 SDslu, 0 SDs, 0 SdLazy, 31 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 3 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, 0.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...