./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1230.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/float-newlib/float_req_bl_1230.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 31da98a788dd1938c78053bade42bc512d4e8954 .......................................................................................................................................................................................................................................................................................................................................................... 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/float-newlib/float_req_bl_1230.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 31da98a788dd1938c78053bade42bc512d4e8954 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:50:58,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:50:58,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:50:58,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:50:58,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:50:58,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:50:58,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:50:58,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:50:58,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:50:58,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:50:58,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:50:58,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:50:58,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:50:58,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:50:58,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:50:58,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:50:58,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:50:58,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:50:58,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:50:58,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:50:58,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:50:58,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:50:58,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:50:58,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:50:58,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:50:58,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:50:58,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:50:58,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:50:58,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:50:58,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:50:58,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:50:58,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:50:58,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:50:58,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:50:58,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:50:58,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:50:58,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:50:58,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:50:58,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:50:58,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:50:58,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:50:58,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:50:58,536 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:50:58,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:50:58,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:50:58,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:50:58,539 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:50:58,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:50:58,539 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:50:58,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:50:58,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:50:58,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:50:58,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:50:58,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:50:58,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:50:58,541 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:50:58,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:50:58,542 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:50:58,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:50:58,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:50:58,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:50:58,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:50:58,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:50:58,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:50:58,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:50:58,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:50:58,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:50:58,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:50:58,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:50:58,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:50:58,546 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-27 23:50:58,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:50:58,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:50:58,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:50:58,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:50:58,918 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:50:58,918 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-27 23:50:58,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5520837c8/0d8aa398d3ca44c8a21014a839f822b8/FLAG5709abb77 [2019-11-27 23:50:59,406 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:50:59,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-27 23:50:59,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5520837c8/0d8aa398d3ca44c8a21014a839f822b8/FLAG5709abb77 [2019-11-27 23:50:59,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5520837c8/0d8aa398d3ca44c8a21014a839f822b8 [2019-11-27 23:50:59,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:50:59,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:50:59,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:50:59,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:50:59,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:50:59,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:50:59" (1/1) ... [2019-11-27 23:50:59,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300b3d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:50:59, skipping insertion in model container [2019-11-27 23:50:59,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:50:59" (1/1) ... [2019-11-27 23:50:59,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:50:59,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:00,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:00,098 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:00,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:00,216 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:00,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00 WrapperNode [2019-11-27 23:51:00,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:00,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:00,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:00,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:00,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:00,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:00,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:00,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:00,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (1/1) ... [2019-11-27 23:51:00,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:00,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:00,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:00,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:00,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (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 23:51:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:51:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:00,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:51:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:00,725 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:00,726 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:51:00,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:00 BoogieIcfgContainer [2019-11-27 23:51:00,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:00,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:00,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:00,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:00,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:50:59" (1/3) ... [2019-11-27 23:51:00,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1485de15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:00, skipping insertion in model container [2019-11-27 23:51:00,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:00" (2/3) ... [2019-11-27 23:51:00,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1485de15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:00, skipping insertion in model container [2019-11-27 23:51:00,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:00" (3/3) ... [2019-11-27 23:51:00,755 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-27 23:51:00,774 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:00,787 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:00,799 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:00,822 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:00,822 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:00,823 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:00,823 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:00,823 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:00,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:00,824 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:00,824 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:51:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:51:00,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:00,849 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:00,850 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:00,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:51:00,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:00,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946794992] [2019-11-27 23:51:00,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:00,976 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 23:51:00,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946794992] [2019-11-27 23:51:00,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:00,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:51:00,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041450600] [2019-11-27 23:51:00,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:00,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:00,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:00,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:01,000 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:51:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:01,019 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:51:01,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:01,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:51:01,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:01,030 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:51:01,030 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:51:01,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:51:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:51:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:51:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:51:01,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:51:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:01,079 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:51:01,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:51:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:51:01,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:01,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:01,082 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:51:01,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:01,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822020870] [2019-11-27 23:51:01,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:01,177 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 23:51:01,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822020870] [2019-11-27 23:51:01,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:01,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:51:01,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899107481] [2019-11-27 23:51:01,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:01,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:01,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:01,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:01,182 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-27 23:51:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:01,276 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-27 23:51:01,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:01,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:51:01,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:01,278 INFO L225 Difference]: With dead ends: 41 [2019-11-27 23:51:01,279 INFO L226 Difference]: Without dead ends: 36 [2019-11-27 23:51:01,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:51:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-27 23:51:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-27 23:51:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:51:01,286 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:51:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:01,287 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:51:01,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:51:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:01,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:01,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:01,288 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-27 23:51:01,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:01,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848420623] [2019-11-27 23:51:01,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:01,394 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 23:51:01,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848420623] [2019-11-27 23:51:01,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:01,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:51:01,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152626777] [2019-11-27 23:51:01,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:01,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:01,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:01,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:01,398 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-27 23:51:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:01,455 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-27 23:51:01,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:01,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:51:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:01,457 INFO L225 Difference]: With dead ends: 43 [2019-11-27 23:51:01,457 INFO L226 Difference]: Without dead ends: 38 [2019-11-27 23:51:01,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:51:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-27 23:51:01,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-27 23:51:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:51:01,466 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-27 23:51:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:01,466 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:51:01,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:51:01,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:01,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:01,468 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:01,468 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:01,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:51:01,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:01,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752900182] [2019-11-27 23:51:01,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:01,545 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:51:01,545 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:01,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:01 BoogieIcfgContainer [2019-11-27 23:51:01,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:01,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:01,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:01,572 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:01,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:00" (3/4) ... [2019-11-27 23:51:01,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:51:01,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:01,580 INFO L168 Benchmark]: Toolchain (without parser) took 1775.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -114.8 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:01,581 INFO L168 Benchmark]: CDTParser took 0.52 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 23:51:01,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:01,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:01,583 INFO L168 Benchmark]: Boogie Preprocessor took 32.73 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:01,584 INFO L168 Benchmark]: RCFGBuilder took 422.00 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:01,585 INFO L168 Benchmark]: TraceAbstraction took 841.72 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:01,585 INFO L168 Benchmark]: Witness Printer took 5.18 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 23:51:01,590 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 412.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.73 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 422.00 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 841.72 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.18 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] float res = fmin_float(x, y); [L44] return x != x; [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 23:51:03,680 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:51:03,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:03,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:03,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:03,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:03,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:03,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:03,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:03,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:03,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:03,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:03,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:03,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:51:03,780 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:03,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:03,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:03,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:03,783 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:03,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:03,783 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:03,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:03,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:03,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:03,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:03,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:03,786 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:51:03,787 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:51:03,787 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:03,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:03,787 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:03,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:03,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:03,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:03,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:03,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:03,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:03,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:03,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:03,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:03,790 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:51:03,790 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:51:03,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:03,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:51:03,791 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-27 23:51:04,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:04,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:04,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:04,148 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:04,149 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:04,150 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-27 23:51:04,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9de894b9/de7623520e2f4e9180f6ff5ddda794ed/FLAG4442ce1cc [2019-11-27 23:51:04,649 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:04,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-27 23:51:04,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9de894b9/de7623520e2f4e9180f6ff5ddda794ed/FLAG4442ce1cc [2019-11-27 23:51:05,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9de894b9/de7623520e2f4e9180f6ff5ddda794ed [2019-11-27 23:51:05,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:05,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:05,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:05,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:05,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:05,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0c63d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05, skipping insertion in model container [2019-11-27 23:51:05,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:05,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:05,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:05,337 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:05,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:05,447 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:05,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05 WrapperNode [2019-11-27 23:51:05,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:05,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:05,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:05,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:05,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:05,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:05,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:05,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:05,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (1/1) ... [2019-11-27 23:51:05,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:05,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:05,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:05,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:05,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (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 23:51:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:51:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-27 23:51:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:05,987 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:05,987 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:51:05,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:05 BoogieIcfgContainer [2019-11-27 23:51:05,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:05,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:05,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:05,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:05" (1/3) ... [2019-11-27 23:51:05,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ada781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:05, skipping insertion in model container [2019-11-27 23:51:05,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:05" (2/3) ... [2019-11-27 23:51:05,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ada781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:05, skipping insertion in model container [2019-11-27 23:51:05,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:05" (3/3) ... [2019-11-27 23:51:05,995 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-27 23:51:06,007 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:06,015 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:06,025 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:06,050 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:06,051 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:06,051 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:06,051 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:06,051 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:06,051 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:06,052 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:06,052 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:51:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:51:06,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:06,074 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:06,074 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:06,080 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:51:06,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:06,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303189140] [2019-11-27 23:51:06,093 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 23:51:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:06,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:51:06,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:06,198 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 23:51:06,199 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:06,202 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 23:51:06,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303189140] [2019-11-27 23:51:06,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:06,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:51:06,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583160086] [2019-11-27 23:51:06,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:06,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:06,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:06,228 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:51:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:06,246 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:51:06,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:06,248 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:51:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:06,260 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:51:06,260 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:51:06,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:51:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:51:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:51:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:51:06,305 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:51:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:06,305 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:51:06,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:51:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:51:06,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:06,307 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:06,522 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:51:06,523 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:06,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:51:06,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:06,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049431337] [2019-11-27 23:51:06,526 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 23:51:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:06,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:51:06,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:06,643 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 23:51:06,643 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:06,664 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 23:51:06,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049431337] [2019-11-27 23:51:06,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:06,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:51:06,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282995742] [2019-11-27 23:51:06,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:51:06,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:51:06,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:51:06,668 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-27 23:51:06,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:06,823 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-27 23:51:06,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:06,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:51:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:06,825 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:51:06,825 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:51:06,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:51:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:51:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:51:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:51:06,837 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:51:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:06,838 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:51:06,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:51:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:51:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:06,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:06,842 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:07,055 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:51:07,056 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:07,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:07,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:51:07,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:07,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938560628] [2019-11-27 23:51:07,058 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 23:51:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:07,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:51:07,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:07,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:07,225 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 23:51:07,225 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:07,322 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 23:51:07,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938560628] [2019-11-27 23:51:07,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:07,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:51:07,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833884189] [2019-11-27 23:51:07,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:51:07,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:07,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:51:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:51:07,325 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-27 23:51:07,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:07,633 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-27 23:51:07,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:07,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-27 23:51:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:07,636 INFO L225 Difference]: With dead ends: 36 [2019-11-27 23:51:07,636 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 23:51:07,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:51:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 23:51:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-27 23:51:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:51:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-27 23:51:07,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-27 23:51:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:07,649 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-27 23:51:07,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:51:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-27 23:51:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:51:07,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:07,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:07,874 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:51:07,874 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:07,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:07,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-27 23:51:07,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:07,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477546293] [2019-11-27 23:51:07,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:07,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:51:07,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:07,964 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 23:51:07,964 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:07,986 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 23:51:07,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477546293] [2019-11-27 23:51:07,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:07,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:51:07,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180305057] [2019-11-27 23:51:07,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:51:07,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:51:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:51:07,990 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-27 23:51:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:08,091 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-27 23:51:08,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:08,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:51:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:08,093 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:51:08,093 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:51:08,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:51:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:51:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:51:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-27 23:51:08,100 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-27 23:51:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:08,100 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-27 23:51:08,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:51:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-27 23:51:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:51:08,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:08,102 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:08,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:51:08,306 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:08,307 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-27 23:51:08,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:08,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771803391] [2019-11-27 23:51:08,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:08,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-27 23:51:08,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:08,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:08,523 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 23:51:08,524 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:08,639 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 23:51:08,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771803391] [2019-11-27 23:51:08,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:08,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-27 23:51:08,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200108728] [2019-11-27 23:51:08,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-27 23:51:08,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:08,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-27 23:51:08,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:51:08,642 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-27 23:51:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:09,031 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-27 23:51:09,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:51:09,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-27 23:51:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:09,033 INFO L225 Difference]: With dead ends: 32 [2019-11-27 23:51:09,033 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:51:09,033 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:51:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:51:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-27 23:51:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 23:51:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-27 23:51:09,037 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-27 23:51:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:09,038 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-27 23:51:09,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-27 23:51:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-27 23:51:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:51:09,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:09,039 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:09,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:51:09,250 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:09,251 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-27 23:51:09,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:09,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131470457] [2019-11-27 23:51:09,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:09,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:51:09,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:09,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:09,403 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 23:51:09,404 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:09,476 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 23:51:09,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131470457] [2019-11-27 23:51:09,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:09,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:51:09,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432834551] [2019-11-27 23:51:09,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:51:09,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:09,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:51:09,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:51:09,478 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-27 23:51:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:09,750 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-27 23:51:09,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:09,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-27 23:51:09,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:09,751 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:51:09,751 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:51:09,752 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:51:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:51:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:51:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:51:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:51:09,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-27 23:51:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:09,754 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:51:09,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:51:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:51:09,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:51:09,955 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:51:09,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:51:10,145 INFO L242 CegarLoopResult]: At program point L31(lines 11 32) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-27 23:51:10,146 INFO L242 CegarLoopResult]: At program point L31-1(lines 11 32) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0))) [2019-11-27 23:51:10,146 INFO L242 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-27 23:51:10,146 INFO L246 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-27 23:51:10,146 INFO L246 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2019-11-27 23:51:10,146 INFO L242 CegarLoopResult]: At program point L40-3(lines 34 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-27 23:51:10,147 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:51:10,147 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:51:10,147 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:51:10,147 INFO L246 CegarLoopResult]: For program point L28(lines 28 31) no Hoare annotation was computed. [2019-11-27 23:51:10,147 INFO L246 CegarLoopResult]: For program point L28-1(lines 28 31) no Hoare annotation was computed. [2019-11-27 23:51:10,147 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-11-27 23:51:10,148 INFO L246 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-27 23:51:10,148 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:51:10,148 INFO L246 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-27 23:51:10,148 INFO L246 CegarLoopResult]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-11-27 23:51:10,148 INFO L246 CegarLoopResult]: For program point L25-1(lines 25 31) no Hoare annotation was computed. [2019-11-27 23:51:10,148 INFO L249 CegarLoopResult]: At program point L63(lines 46 64) the Hoare annotation is: true [2019-11-27 23:51:10,148 INFO L246 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2019-11-27 23:51:10,149 INFO L246 CegarLoopResult]: For program point L22(lines 22 31) no Hoare annotation was computed. [2019-11-27 23:51:10,149 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 31) no Hoare annotation was computed. [2019-11-27 23:51:10,149 INFO L246 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-27 23:51:10,149 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-27 23:51:10,149 INFO L246 CegarLoopResult]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2019-11-27 23:51:10,149 INFO L246 CegarLoopResult]: For program point L14-5(lines 14 18) no Hoare annotation was computed. [2019-11-27 23:51:10,150 INFO L242 CegarLoopResult]: At program point L14-6(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-27 23:51:10,150 INFO L246 CegarLoopResult]: For program point L14-7(lines 11 32) no Hoare annotation was computed. [2019-11-27 23:51:10,150 INFO L246 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-11-27 23:51:10,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:10,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:10,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:10,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:10,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:10 BoogieIcfgContainer [2019-11-27 23:51:10,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:10,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:10,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:10,174 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:10,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:05" (3/4) ... [2019-11-27 23:51:10,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:51:10,192 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-27 23:51:10,193 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-27 23:51:10,193 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:51:10,221 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2019-11-27 23:51:10,221 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) [2019-11-27 23:51:10,222 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) [2019-11-27 23:51:10,274 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:51:10,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:10,277 INFO L168 Benchmark]: Toolchain (without parser) took 5202.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 956.3 MB in the beginning and 902.9 MB in the end (delta: 53.4 MB). Peak memory consumption was 198.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:10,277 INFO L168 Benchmark]: CDTParser took 0.30 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 23:51:10,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:10,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.37 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 23:51:10,282 INFO L168 Benchmark]: Boogie Preprocessor took 34.06 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 23:51:10,283 INFO L168 Benchmark]: RCFGBuilder took 464.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:10,284 INFO L168 Benchmark]: TraceAbstraction took 4184.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 902.9 MB in the end (delta: 205.9 MB). Peak memory consumption was 205.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:10,284 INFO L168 Benchmark]: Witness Printer took 100.57 ms. Allocated memory is still 1.2 GB. Free memory is still 902.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:10,288 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 372.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.37 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. * Boogie Preprocessor took 34.06 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 464.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4184.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 902.9 MB in the end (delta: 205.9 MB). Peak memory consumption was 205.9 MB. Max. memory is 11.5 GB. * Witness Printer took 100.57 ms. Allocated memory is still 1.2 GB. Free memory is still 902.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2019-11-27 23:51:10,296 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:10,296 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2019-11-27 23:51:10,297 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:10,297 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...