./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0621b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_0621b.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0a64e192e0bbeec977baf2f66a916968f631543 ............................................................................................................................................................................................................................................................................................................... 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 -Xmx15G -Xms4m -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_0621b.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0a64e192e0bbeec977baf2f66a916968f631543 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:35:20,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:35:20,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:35:20,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:35:20,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:35:20,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:35:20,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:35:20,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:35:20,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:35:20,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:35:20,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:35:20,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:35:20,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:35:20,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:35:20,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:35:20,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:35:20,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:35:20,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:35:20,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:35:20,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:35:20,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:35:20,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:35:20,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:35:20,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:35:20,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:35:20,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:35:20,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:35:20,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:35:20,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:35:20,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:35:20,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:35:20,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:35:20,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:35:20,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:35:20,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:35:20,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:35:20,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:35:20,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:35:20,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:35:20,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:35:20,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:35:20,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:35:20,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:35:20,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:35:20,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:35:20,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:35:20,341 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:35:20,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:35:20,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:35:20,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:35:20,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:35:20,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:35:20,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:35:20,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:35:20,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:35:20,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:35:20,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:35:20,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:35:20,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:35:20,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:35:20,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:35:20,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:35:20,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:35:20,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:35:20,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:35:20,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:35:20,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:35:20,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:35:20,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:35:20,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:35:20,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:35:20,349 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(reach_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 -> f0a64e192e0bbeec977baf2f66a916968f631543 [2020-10-20 00:35:20,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:35:20,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:35:20,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:35:20,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:35:20,584 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:35:20,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0621b.c [2020-10-20 00:35:20,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e2d2942/6dd360395eb24b1ca160f996a4edcc5e/FLAG02eb3a0cd [2020-10-20 00:35:21,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:35:21,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621b.c [2020-10-20 00:35:21,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e2d2942/6dd360395eb24b1ca160f996a4edcc5e/FLAG02eb3a0cd [2020-10-20 00:35:21,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e2d2942/6dd360395eb24b1ca160f996a4edcc5e [2020-10-20 00:35:21,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:35:21,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:35:21,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:21,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:35:21,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:35:21,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:21" (1/1) ... [2020-10-20 00:35:21,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21737582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:21, skipping insertion in model container [2020-10-20 00:35:21,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:21" (1/1) ... [2020-10-20 00:35:21,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:35:21,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:35:21,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:21,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:35:21,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:22,005 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:35:22,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22 WrapperNode [2020-10-20 00:35:22,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:22,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:22,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:35:22,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:35:22,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:22,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:35:22,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:35:22,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:35:22,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (1/1) ... [2020-10-20 00:35:22,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:35:22,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:35:22,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:35:22,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:35:22,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (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 [2020-10-20 00:35:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:35:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:35:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:35:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:35:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:35:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:35:22,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:35:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:35:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:35:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:35:22,551 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:35:22,551 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:35:22,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:22 BoogieIcfgContainer [2020-10-20 00:35:22,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:35:22,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:35:22,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:35:22,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:35:22,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:35:21" (1/3) ... [2020-10-20 00:35:22,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2f6c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:22, skipping insertion in model container [2020-10-20 00:35:22,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:22" (2/3) ... [2020-10-20 00:35:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2f6c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:22, skipping insertion in model container [2020-10-20 00:35:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:22" (3/3) ... [2020-10-20 00:35:22,563 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621b.c [2020-10-20 00:35:22,581 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:35:22,591 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:35:22,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:35:22,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:35:22,639 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:35:22,639 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:35:22,639 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:35:22,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:35:22,640 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:35:22,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:35:22,640 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:35:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:35:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:35:22,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:22,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:22,667 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1906423550, now seen corresponding path program 1 times [2020-10-20 00:35:22,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:35:22,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991743773] [2020-10-20 00:35:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:35:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:35:22,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991743773] [2020-10-20 00:35:22,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:22,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:35:22,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608189074] [2020-10-20 00:35:22,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:35:22,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:35:22,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:35:22,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:35:22,870 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:35:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:35:22,900 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2020-10-20 00:35:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:35:22,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:35:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:35:22,912 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:35:22,912 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:35:22,916 INFO L677 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 [2020-10-20 00:35:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:35:22,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:35:22,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:35:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-20 00:35:22,951 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 9 [2020-10-20 00:35:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:35:22,952 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 00:35:22,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:35:22,952 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-20 00:35:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:35:22,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:22,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:22,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:35:22,954 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:22,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:22,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1481927263, now seen corresponding path program 1 times [2020-10-20 00:35:22,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:35:22,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277789516] [2020-10-20 00:35:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:35:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:35:23,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:35:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:35:23,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:35:23,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:35:23,156 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:35:23,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:35:23,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:35:23 BoogieIcfgContainer [2020-10-20 00:35:23,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:35:23,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:35:23,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:35:23,200 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:35:23,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:22" (3/4) ... [2020-10-20 00:35:23,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:35:23,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:35:23,208 INFO L168 Benchmark]: Toolchain (without parser) took 1624.01 ms. Allocated memory was 38.3 MB in the beginning and 48.8 MB in the end (delta: 10.5 MB). Free memory was 12.0 MB in the beginning and 11.9 MB in the end (delta: 46.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,208 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 16.1 MB in the beginning and 16.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.71 ms. Allocated memory was 38.3 MB in the beginning and 44.6 MB in the end (delta: 6.3 MB). Free memory was 11.1 MB in the beginning and 24.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.54 ms. Allocated memory is still 44.6 MB. Free memory was 24.0 MB in the beginning and 21.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,211 INFO L168 Benchmark]: Boogie Preprocessor took 41.90 ms. Allocated memory is still 44.6 MB. Free memory was 21.4 MB in the beginning and 19.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,212 INFO L168 Benchmark]: RCFGBuilder took 454.10 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 27.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,213 INFO L168 Benchmark]: TraceAbstraction took 643.13 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 27.0 MB in the beginning and 12.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,214 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 48.8 MB. Free memory was 12.3 MB in the beginning and 11.9 MB in the end (delta: 343.9 kB). Peak memory consumption was 343.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:23,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 16.1 MB in the beginning and 16.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 416.71 ms. Allocated memory was 38.3 MB in the beginning and 44.6 MB in the end (delta: 6.3 MB). Free memory was 11.1 MB in the beginning and 24.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 51.54 ms. Allocated memory is still 44.6 MB. Free memory was 24.0 MB in the beginning and 21.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.90 ms. Allocated memory is still 44.6 MB. Free memory was 21.4 MB in the beginning and 19.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 454.10 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 27.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 643.13 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 27.0 MB in the beginning and 12.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. * Witness Printer took 5.11 ms. Allocated memory is still 48.8 MB. Free memory was 12.3 MB in the beginning and 11.9 MB in the end (delta: 343.9 kB). Peak memory consumption was 343.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 131, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 67, overapproximation of someBinaryArithmeticFLOAToperation at line 70. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L128] float x = -1.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L68] COND TRUE ix >= 0x50800000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L69] COND TRUE ((ix) > 0x7f800000L) [L70] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L129] float res = atan_float(x); [L131] COND TRUE res != -pi_o_2 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L3] __assert_fail("0", "float_req_bl_0621b.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.1.25-9a8b2e8 [2020-10-20 00:35:25,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:35:25,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:35:25,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:35:25,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:35:25,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:35:25,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:35:25,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:35:25,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:35:25,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:35:25,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:35:25,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:35:25,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:35:25,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:35:25,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:35:25,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:35:25,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:35:25,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:35:25,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:35:25,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:35:25,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:35:25,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:35:25,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:35:25,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:35:25,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:35:25,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:35:25,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:35:25,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:35:25,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:35:25,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:35:25,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:35:25,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:35:25,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:35:25,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:35:25,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:35:25,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:35:25,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:35:25,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:35:25,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:35:25,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:35:25,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:35:25,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:35:25,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:35:25,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:35:25,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:35:25,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:35:25,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:35:25,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:35:25,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:35:25,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:35:25,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:35:25,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:35:25,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:35:25,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:35:25,536 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:35:25,536 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:35:25,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:35:25,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:35:25,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:35:25,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:35:25,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:35:25,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:35:25,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:35:25,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:35:25,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:35:25,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:35:25,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:35:25,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:35:25,539 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:35:25,539 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:35:25,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:35:25,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:35:25,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:35:25,540 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(reach_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 -> f0a64e192e0bbeec977baf2f66a916968f631543 [2020-10-20 00:35:25,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:35:25,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:35:25,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:35:25,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:35:25,773 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:35:25,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0621b.c [2020-10-20 00:35:25,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36bb7e704/ac22a5c9dfa54e03bf3dd861c86f5706/FLAG69f0bb2ad [2020-10-20 00:35:26,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:35:26,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621b.c [2020-10-20 00:35:26,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36bb7e704/ac22a5c9dfa54e03bf3dd861c86f5706/FLAG69f0bb2ad [2020-10-20 00:35:26,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36bb7e704/ac22a5c9dfa54e03bf3dd861c86f5706 [2020-10-20 00:35:26,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:35:26,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:35:26,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:26,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:35:26,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:35:26,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:26" (1/1) ... [2020-10-20 00:35:26,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a55234f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:26, skipping insertion in model container [2020-10-20 00:35:26,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:26" (1/1) ... [2020-10-20 00:35:26,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:35:26,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:35:27,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:27,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:35:27,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:27,280 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:35:27,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27 WrapperNode [2020-10-20 00:35:27,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:27,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:27,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:35:27,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:35:27,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:27,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:35:27,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:35:27,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:35:27,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (1/1) ... [2020-10-20 00:35:27,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:35:27,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:35:27,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:35:27,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:35:27,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (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 [2020-10-20 00:35:27,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-10-20 00:35:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:35:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:35:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:35:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:35:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:35:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:35:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:35:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:35:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:35:35,848 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:35:35,848 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:35:35,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:35 BoogieIcfgContainer [2020-10-20 00:35:35,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:35:35,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:35:35,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:35:35,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:35:35,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:35:26" (1/3) ... [2020-10-20 00:35:35,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35747be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:35, skipping insertion in model container [2020-10-20 00:35:35,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:27" (2/3) ... [2020-10-20 00:35:35,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35747be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:35, skipping insertion in model container [2020-10-20 00:35:35,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:35" (3/3) ... [2020-10-20 00:35:35,865 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621b.c [2020-10-20 00:35:35,878 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:35:35,887 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:35:35,904 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:35:35,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:35:35,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:35:35,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:35:35,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:35:35,937 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:35:35,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:35:35,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:35:35,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:35:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:35:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:35:35,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:35,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:35,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1906423550, now seen corresponding path program 1 times [2020-10-20 00:35:35,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:35:35,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785532654] [2020-10-20 00:35:35,976 INFO L95 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 [2020-10-20 00:35:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:36,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:35:36,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:35:36,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:35:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:35:36,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785532654] [2020-10-20 00:35:36,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:36,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:35:36,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008567635] [2020-10-20 00:35:36,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:35:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:35:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:35:36,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:35:36,908 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:35:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:35:36,926 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2020-10-20 00:35:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:35:36,927 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:35:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:35:36,936 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:35:36,937 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:35:36,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:35:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:35:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:35:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:35:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-20 00:35:36,976 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 9 [2020-10-20 00:35:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:35:36,976 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 00:35:36,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:35:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-20 00:35:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:35:36,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:36,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:37,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:35:37,192 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1481927263, now seen corresponding path program 1 times [2020-10-20 00:35:37,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:35:37,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728887803] [2020-10-20 00:35:37,195 INFO L95 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 [2020-10-20 00:35:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:38,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:35:38,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:35:38,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:35:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:35:38,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728887803] [2020-10-20 00:35:38,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:38,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:35:38,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463638816] [2020-10-20 00:35:38,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:35:38,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:35:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:35:38,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:35:38,482 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 8 states. [2020-10-20 00:35:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:35:38,731 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2020-10-20 00:35:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:35:38,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-20 00:35:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:35:38,738 INFO L225 Difference]: With dead ends: 33 [2020-10-20 00:35:38,738 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 00:35:38,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:35:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 00:35:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 00:35:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:35:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-20 00:35:38,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-10-20 00:35:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:35:38,744 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-20 00:35:38,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:35:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-20 00:35:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:35:38,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:38,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:38,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:35:38,947 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1305344773, now seen corresponding path program 1 times [2020-10-20 00:35:38,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:35:38,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619309499] [2020-10-20 00:35:38,950 INFO L95 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 [2020-10-20 00:35:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:40,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 00:35:40,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:40,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:35:40,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:35:40,808 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 39 [2020-10-20 00:35:40,811 INFO L350 Elim1Store]: treesize reduction 339, result has 16.7 percent of original size [2020-10-20 00:35:40,814 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 738 treesize of output 752 [2020-10-20 00:35:40,826 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-10-20 00:35:40,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,833 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 2, 2, 2, 5, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:40,833 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,839 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:40,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,845 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:40,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,850 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:40,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,857 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 1] term [2020-10-20 00:35:40,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,861 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:40,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,863 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:40,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,870 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:40,872 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,874 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 2, 1] term [2020-10-20 00:35:40,876 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,879 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 2, 1] term [2020-10-20 00:35:40,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,883 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:40,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,887 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:40,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:40,900 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:35:41,963 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 156 DAG size of output: 110 [2020-10-20 00:35:41,966 INFO L625 ElimStorePlain]: treesize reduction 2434, result has 8.3 percent of original size [2020-10-20 00:35:41,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619309499] [2020-10-20 00:35:41,978 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:35:41,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [900748455] [2020-10-20 00:35:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:35:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 00:35:48,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:48,882 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2020-10-20 00:35:48,883 INFO L350 Elim1Store]: treesize reduction 355, result has 16.1 percent of original size [2020-10-20 00:35:48,883 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 212 treesize of output 250 [2020-10-20 00:35:48,886 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-10-20 00:35:48,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:48,889 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 2, 6, 2, 5, 1] term [2020-10-20 00:35:48,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:48,890 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 2, 5, 1] term [2020-10-20 00:35:48,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:48,892 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 2, 1] term [2020-10-20 00:35:48,893 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:48,895 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 2, 1] term [2020-10-20 00:35:48,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:48,897 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:35:49,411 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-20 00:35:49,412 INFO L625 ElimStorePlain]: treesize reduction 304, result has 34.9 percent of original size [2020-10-20 00:35:49,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:35:49,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12232103] [2020-10-20 00:35:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:35:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:49,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 00:35:49,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:49,954 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2020-10-20 00:35:49,956 INFO L350 Elim1Store]: treesize reduction 355, result has 14.5 percent of original size [2020-10-20 00:35:49,957 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 935 treesize of output 911 [2020-10-20 00:35:49,962 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:35:50,321 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2020-10-20 00:35:50,322 INFO L625 ElimStorePlain]: treesize reduction 730, result has 17.0 percent of original size [2020-10-20 00:35:50,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:35:50,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:50,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:35:50,328 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:35:50,328 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:35:50,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:35:50,959 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:35:50,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:35:50 BoogieIcfgContainer [2020-10-20 00:35:50,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:35:50,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:35:50,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:35:50,960 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:35:50,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:35" (3/4) ... [2020-10-20 00:35:50,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:35:50,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:35:50,966 INFO L168 Benchmark]: Toolchain (without parser) took 24146.79 ms. Allocated memory was 40.4 MB in the beginning and 56.1 MB in the end (delta: 15.7 MB). Free memory was 17.7 MB in the beginning and 13.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,967 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 38.4 kB). Peak memory consumption was 38.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.30 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 16.9 MB in the beginning and 12.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.57 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 12.2 MB in the beginning and 26.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,969 INFO L168 Benchmark]: Boogie Preprocessor took 54.24 ms. Allocated memory is still 43.0 MB. Free memory was 26.0 MB in the beginning and 23.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,970 INFO L168 Benchmark]: RCFGBuilder took 8450.58 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 23.4 MB in the beginning and 24.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,971 INFO L168 Benchmark]: TraceAbstraction took 15107.81 ms. Allocated memory was 44.6 MB in the beginning and 56.1 MB in the end (delta: 11.5 MB). Free memory was 24.4 MB in the beginning and 13.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,972 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 56.1 MB. Free memory was 13.9 MB in the beginning and 13.3 MB in the end (delta: 582.4 kB). Peak memory consumption was 582.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:50,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 38.4 kB). Peak memory consumption was 38.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 455.30 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 16.9 MB in the beginning and 12.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 63.57 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 12.2 MB in the beginning and 26.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 54.24 ms. Allocated memory is still 43.0 MB. Free memory was 26.0 MB in the beginning and 23.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 8450.58 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 23.4 MB in the beginning and 24.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 15107.81 ms. Allocated memory was 44.6 MB in the beginning and 56.1 MB in the end (delta: 11.5 MB). Free memory was 24.4 MB in the beginning and 13.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 14.3 GB. * Witness Printer took 4.75 ms. Allocated memory is still 56.1 MB. Free memory was 13.9 MB in the beginning and 13.3 MB in the end (delta: 582.4 kB). Peak memory consumption was 582.4 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L128] float x = -1.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff [L68] COND TRUE ix >= 0x50800000 [L69] COND FALSE !(((ix) > 0x7f800000L)) [L71] COND FALSE !(hx > 0) [L74] EXPR atanhi_atan[3] [L74] EXPR atanlo_atan[3] [L74] return -atanhi_atan[3] - atanlo_atan[3]; [L129] float res = atan_float(x); [L131] COND TRUE res != -pi_o_2 [L3] __assert_fail("0", "float_req_bl_0621b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 15.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 28 SDslu, 7 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 6 QuantifiedInterpolants, 1316 SizeOfPredicates, 8 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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...