./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:51:12,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:12,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:12,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:12,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:12,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:12,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:12,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:12,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:12,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:12,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:12,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:12,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:12,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:12,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:12,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:12,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:12,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:12,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:12,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:12,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:12,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:12,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:12,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:12,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:12,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:12,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:12,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:12,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:12,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:12,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:12,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:12,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:12,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:12,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:12,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:12,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:12,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:12,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:12,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:12,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:12,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:51:12,596 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:12,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:12,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:12,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:12,599 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:12,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:12,600 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:12,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:51:12,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:12,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:12,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:12,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:12,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:12,601 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:12,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:12,602 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:12,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:12,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:12,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:12,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:12,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:12,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:12,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:12,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:12,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:12,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:51:12,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:51:12,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:12,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2019-11-27 23:51:12,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:12,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:12,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:12,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:12,923 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:12,924 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-27 23:51:12,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87c6a9dbf/df51565b36b246beae30201be7890ea8/FLAG8a074f83e [2019-11-27 23:51:13,452 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:13,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-27 23:51:13,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87c6a9dbf/df51565b36b246beae30201be7890ea8/FLAG8a074f83e [2019-11-27 23:51:13,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87c6a9dbf/df51565b36b246beae30201be7890ea8 [2019-11-27 23:51:13,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:13,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:13,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:13,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:13,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:13,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:13" (1/1) ... [2019-11-27 23:51:13,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e319661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:13, skipping insertion in model container [2019-11-27 23:51:13,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:13" (1/1) ... [2019-11-27 23:51:13,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:13,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:14,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:14,110 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:14,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:14,217 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:14,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14 WrapperNode [2019-11-27 23:51:14,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:14,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:14,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:14,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:14,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:14,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:14,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:14,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:14,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... [2019-11-27 23:51:14,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:14,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:14,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:14,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:14,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:14,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:51:14,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:14,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:51:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:14,737 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:14,737 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:51:14,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:14 BoogieIcfgContainer [2019-11-27 23:51:14,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:14,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:14,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:14,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:14,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:13" (1/3) ... [2019-11-27 23:51:14,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703e073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:14, skipping insertion in model container [2019-11-27 23:51:14,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:14" (2/3) ... [2019-11-27 23:51:14,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703e073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:14, skipping insertion in model container [2019-11-27 23:51:14,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:14" (3/3) ... [2019-11-27 23:51:14,751 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-11-27 23:51:14,762 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:14,769 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:14,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:14,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:14,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:14,806 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:14,806 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:14,806 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:14,806 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:14,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:14,806 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:51:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:51:14,827 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:14,828 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:14,828 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:51:14,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:14,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480565979] [2019-11-27 23:51:14,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:14,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480565979] [2019-11-27 23:51:14,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:14,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:51:14,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829245972] [2019-11-27 23:51:14,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:14,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:14,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:14,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:14,961 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:51:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:14,980 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:51:14,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:14,981 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:51:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:14,992 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:51:14,992 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:51:14,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:51:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:51:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:51:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:51:15,031 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:51:15,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:15,032 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:51:15,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:51:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:51:15,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:15,033 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:15,033 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:15,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:15,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:51:15,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:15,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217582378] [2019-11-27 23:51:15,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:15,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217582378] [2019-11-27 23:51:15,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:15,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:51:15,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274399504] [2019-11-27 23:51:15,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:15,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:15,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:15,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:15,121 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-27 23:51:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:15,209 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-27 23:51:15,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:15,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:51:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:15,211 INFO L225 Difference]: With dead ends: 41 [2019-11-27 23:51:15,211 INFO L226 Difference]: Without dead ends: 36 [2019-11-27 23:51:15,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:51:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-27 23:51:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-27 23:51:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:51:15,220 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:51:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:15,221 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:51:15,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:51:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:15,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:15,222 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:15,222 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:15,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:15,223 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-27 23:51:15,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:15,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597713522] [2019-11-27 23:51:15,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:15,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597713522] [2019-11-27 23:51:15,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:15,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:51:15,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129665791] [2019-11-27 23:51:15,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:15,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:15,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:15,294 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-27 23:51:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:15,365 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-27 23:51:15,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:15,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:51:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:15,367 INFO L225 Difference]: With dead ends: 43 [2019-11-27 23:51:15,367 INFO L226 Difference]: Without dead ends: 38 [2019-11-27 23:51:15,368 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:51:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-27 23:51:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-27 23:51:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:51:15,375 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-27 23:51:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:15,376 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:51:15,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:51:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:15,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:15,377 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:15,378 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:51:15,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:15,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509244455] [2019-11-27 23:51:15,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:15,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:51:15,450 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:15,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:15 BoogieIcfgContainer [2019-11-27 23:51:15,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:15,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:15,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:15,478 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:15,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:14" (3/4) ... [2019-11-27 23:51:15,482 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:51:15,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:15,484 INFO L168 Benchmark]: Toolchain (without parser) took 1643.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -88.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:15,485 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:15,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:15,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:15,487 INFO L168 Benchmark]: Boogie Preprocessor took 30.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:15,488 INFO L168 Benchmark]: RCFGBuilder took 448.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:15,489 INFO L168 Benchmark]: TraceAbstraction took 737.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:15,489 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:15,494 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 376.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 448.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 737.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L62] float res = fmax_float(x, y); [L54] return x != x; [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:51:17,561 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:51:17,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:17,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:17,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:17,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:17,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:17,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:17,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:17,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:17,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:17,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:17,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:17,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:51:17,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:17,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:17,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:17,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:17,684 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:17,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:17,687 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:17,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:17,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:17,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:17,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:17,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:17,689 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:51:17,689 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:51:17,689 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:17,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:17,690 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:17,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:17,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:17,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:17,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:17,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:17,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:17,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:17,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:17,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:17,698 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:51:17,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:51:17,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:17,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:51:17,699 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2019-11-27 23:51:17,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:18,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:18,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:18,015 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:18,016 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:18,016 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-27 23:51:18,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504b968e0/287cca25c02f4f49882af0d216a14d00/FLAG3ce8b1f0a [2019-11-27 23:51:18,535 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:18,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-11-27 23:51:18,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504b968e0/287cca25c02f4f49882af0d216a14d00/FLAG3ce8b1f0a [2019-11-27 23:51:18,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504b968e0/287cca25c02f4f49882af0d216a14d00 [2019-11-27 23:51:18,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:18,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:18,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:18,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:18,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:18,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:18" (1/1) ... [2019-11-27 23:51:18,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737469c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:18, skipping insertion in model container [2019-11-27 23:51:18,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:18" (1/1) ... [2019-11-27 23:51:18,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:18,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:19,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:19,224 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:19,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:19,363 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:19,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19 WrapperNode [2019-11-27 23:51:19,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:19,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:19,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:19,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:19,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:19,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:19,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:19,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:19,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... [2019-11-27 23:51:19,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:19,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:19,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:19,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:19,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:51:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-27 23:51:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:19,928 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:19,929 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:51:19,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:19 BoogieIcfgContainer [2019-11-27 23:51:19,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:19,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:19,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:19,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:19,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:18" (1/3) ... [2019-11-27 23:51:19,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711f556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:19, skipping insertion in model container [2019-11-27 23:51:19,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:19" (2/3) ... [2019-11-27 23:51:19,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711f556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:19, skipping insertion in model container [2019-11-27 23:51:19,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:19" (3/3) ... [2019-11-27 23:51:19,939 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-11-27 23:51:19,949 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:19,956 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:19,968 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:19,988 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:19,988 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:19,989 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:19,989 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:19,989 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:19,989 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:19,990 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:19,990 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:51:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:51:20,009 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:20,010 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:20,011 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:51:20,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:20,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732653257] [2019-11-27 23:51:20,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:20,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:51:20,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:20,142 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:20,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732653257] [2019-11-27 23:51:20,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:20,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:51:20,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661662134] [2019-11-27 23:51:20,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:20,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:20,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:20,177 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:51:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:20,201 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:51:20,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:20,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:51:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:20,215 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:51:20,216 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:51:20,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:51:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:51:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:51:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:51:20,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:51:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:20,260 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:51:20,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:51:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:51:20,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:20,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:20,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:51:20,465 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:20,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:51:20,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:20,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022527787] [2019-11-27 23:51:20,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:20,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:51:20,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:20,572 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:20,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022527787] [2019-11-27 23:51:20,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:20,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:51:20,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718922874] [2019-11-27 23:51:20,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:51:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:20,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:51:20,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:51:20,613 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-27 23:51:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:20,755 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-27 23:51:20,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:20,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:51:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:20,757 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:51:20,758 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:51:20,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:51:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:51:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:51:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:51:20,776 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:51:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:20,777 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:51:20,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:51:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:51:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:20,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:20,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:20,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:51:20,996 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:51:20,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:20,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458702964] [2019-11-27 23:51:20,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:21,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:51:21,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:21,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:21,162 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:21,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458702964] [2019-11-27 23:51:21,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:21,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:51:21,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797362810] [2019-11-27 23:51:21,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:51:21,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:51:21,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:51:21,250 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-27 23:51:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:21,822 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-27 23:51:21,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:21,823 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-27 23:51:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:21,824 INFO L225 Difference]: With dead ends: 36 [2019-11-27 23:51:21,825 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 23:51:21,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:51:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 23:51:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-27 23:51:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:51:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-27 23:51:21,831 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-27 23:51:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:21,831 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-27 23:51:21,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:51:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-27 23:51:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:51:21,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:21,833 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:22,054 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:51:22,054 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-27 23:51:22,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:22,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284010743] [2019-11-27 23:51:22,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:22,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:51:22,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:22,144 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:22,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284010743] [2019-11-27 23:51:22,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:22,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:51:22,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368696088] [2019-11-27 23:51:22,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:51:22,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:51:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:51:22,174 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-27 23:51:22,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:22,294 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-27 23:51:22,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:22,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:51:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:22,296 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:51:22,296 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:51:22,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:51:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:51:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:51:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:51:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-27 23:51:22,304 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-27 23:51:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:22,305 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-27 23:51:22,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:51:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-27 23:51:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:51:22,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:22,306 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:22,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:51:22,523 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:22,524 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-27 23:51:22,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:22,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728322648] [2019-11-27 23:51:22,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:22,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-27 23:51:22,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:22,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:22,718 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:22,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728322648] [2019-11-27 23:51:22,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:22,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-27 23:51:22,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143322443] [2019-11-27 23:51:22,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-27 23:51:22,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-27 23:51:22,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:51:22,834 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-27 23:51:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:23,242 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-27 23:51:23,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:51:23,243 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-27 23:51:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:23,244 INFO L225 Difference]: With dead ends: 32 [2019-11-27 23:51:23,244 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:51:23,244 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:51:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:51:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-27 23:51:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 23:51:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-27 23:51:23,249 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-27 23:51:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:23,249 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-27 23:51:23,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-27 23:51:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-27 23:51:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:51:23,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:23,251 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:23,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:51:23,459 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-27 23:51:23,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:23,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53258004] [2019-11-27 23:51:23,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:23,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:51:23,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:23,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:23,628 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:23,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53258004] [2019-11-27 23:51:23,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:23,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:51:23,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894762277] [2019-11-27 23:51:23,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:51:23,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:23,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:51:23,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:51:23,709 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-27 23:51:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:23,922 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-27 23:51:23,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:23,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-27 23:51:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:23,923 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:51:23,923 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:51:23,924 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:51:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:51:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:51:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:51:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:51:23,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-27 23:51:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:23,925 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:51:23,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:51:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:51:23,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:51:24,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:51:24,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:51:24,541 INFO L246 CegarLoopResult]: For program point L64(lines 64 67) no Hoare annotation was computed. [2019-11-27 23:51:24,541 INFO L249 CegarLoopResult]: At program point L69(lines 56 70) the Hoare annotation is: true [2019-11-27 23:51:24,541 INFO L246 CegarLoopResult]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-27 23:51:24,541 INFO L246 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-27 23:51:24,541 INFO L246 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:51:24,542 INFO L246 CegarLoopResult]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-27 23:51:24,543 INFO L242 CegarLoopResult]: At program point L54(line 54) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-27 23:51:24,543 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-27 23:51:24,543 INFO L246 CegarLoopResult]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-27 23:51:24,543 INFO L242 CegarLoopResult]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-27 23:51:24,543 INFO L246 CegarLoopResult]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-27 23:51:24,543 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-27 23:51:24,544 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-27 23:51:24,545 INFO L242 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-11-27 23:51:24,545 INFO L246 CegarLoopResult]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-27 23:51:24,545 INFO L246 CegarLoopResult]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-27 23:51:24,545 INFO L242 CegarLoopResult]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-11-27 23:51:24,545 INFO L246 CegarLoopResult]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-27 23:51:24,546 INFO L246 CegarLoopResult]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-27 23:51:24,546 INFO L246 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-27 23:51:24,546 INFO L242 CegarLoopResult]: At program point L39(lines 19 40) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-11-27 23:51:24,547 INFO L242 CegarLoopResult]: At program point L39-1(lines 19 40) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))))) [2019-11-27 23:51:24,554 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,555 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,566 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,566 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:24 BoogieIcfgContainer [2019-11-27 23:51:24,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:24,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:24,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:24,574 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:24,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:19" (3/4) ... [2019-11-27 23:51:24,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:51:24,592 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-27 23:51:24,592 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-27 23:51:24,593 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:51:24,622 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-27 23:51:24,622 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-27 23:51:24,623 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) || (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) [2019-11-27 23:51:24,662 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:51:24,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:24,665 INFO L168 Benchmark]: Toolchain (without parser) took 5746.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 952.3 MB in the beginning and 888.9 MB in the end (delta: 63.4 MB). Peak memory consumption was 210.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:24,665 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:24,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:24,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:24,667 INFO L168 Benchmark]: Boogie Preprocessor took 39.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:24,668 INFO L168 Benchmark]: RCFGBuilder took 464.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:24,668 INFO L168 Benchmark]: TraceAbstraction took 4641.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.6 MB in the end (delta: 214.8 MB). Peak memory consumption was 214.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:24,669 INFO L168 Benchmark]: Witness Printer took 89.06 ms. Allocated memory is still 1.2 GB. Free memory was 895.6 MB in the beginning and 888.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:24,672 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 445.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 464.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4641.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.6 MB in the end (delta: 214.8 MB). Peak memory consumption was 214.8 MB. Max. memory is 11.5 GB. * Witness Printer took 89.06 ms. Allocated memory is still 1.2 GB. Free memory was 895.6 MB in the beginning and 888.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant [2019-11-27 23:51:24,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 54]: Loop Invariant [2019-11-27 23:51:24,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,685 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:51:24,685 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) || (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8512 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...