./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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_1252a.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 f441bd4a1f5705911b7315c074b39e665542818e ........................................................................................................................................................................................................................................................................................................................................................... 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_1252a.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 f441bd4a1f5705911b7315c074b39e665542818e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:55:27,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:27,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:27,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:27,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:27,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:27,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:27,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:27,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:27,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:27,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:27,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:27,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:27,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:27,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:27,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:27,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:27,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:27,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:27,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:27,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:27,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:27,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:27,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:27,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:27,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:27,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:27,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:27,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:27,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:27,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:27,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:27,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:27,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:27,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:27,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:27,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:27,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:27,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:27,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:27,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:27,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:55:27,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:27,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:27,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:27,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:27,142 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:27,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:27,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:27,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:55:27,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:27,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:27,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:27,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:27,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:27,144 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:27,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:27,145 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:27,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:27,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:27,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:27,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:27,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:27,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:27,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:27,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:27,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:27,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:55:27,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:55:27,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:27,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:27,148 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-28 16:55:27,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:27,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:27,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:27,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:27,472 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:27,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-28 16:55:27,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50498aa2/cafe6a434ce84918bee1bec314675b6e/FLAGdeb428cb3 [2019-11-28 16:55:27,996 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:27,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-28 16:55:28,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50498aa2/cafe6a434ce84918bee1bec314675b6e/FLAGdeb428cb3 [2019-11-28 16:55:28,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50498aa2/cafe6a434ce84918bee1bec314675b6e [2019-11-28 16:55:28,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:28,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:28,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:28,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:28,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:28,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381b270f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28, skipping insertion in model container [2019-11-28 16:55:28,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:28,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:28,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:28,629 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:28,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:28,741 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:28,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28 WrapperNode [2019-11-28 16:55:28,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:28,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:28,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:28,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:28,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:28,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:28,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:28,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:28,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (1/1) ... [2019-11-28 16:55:28,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:28,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:28,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:28,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:28,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (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 [2019-11-28 16:55:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:55:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:28,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:55:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:29,231 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:29,231 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:55:29,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:29 BoogieIcfgContainer [2019-11-28 16:55:29,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:29,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:29,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:29,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:29,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:28" (1/3) ... [2019-11-28 16:55:29,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76931c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:29, skipping insertion in model container [2019-11-28 16:55:29,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:28" (2/3) ... [2019-11-28 16:55:29,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76931c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:29, skipping insertion in model container [2019-11-28 16:55:29,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:29" (3/3) ... [2019-11-28 16:55:29,263 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-28 16:55:29,283 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:29,293 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:29,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:29,333 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:29,334 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:29,334 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:29,334 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:29,334 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:29,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:29,335 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:29,335 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:55:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:29,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:29,359 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:29,359 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:29,365 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-28 16:55:29,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:29,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666436715] [2019-11-28 16:55:29,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:29,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666436715] [2019-11-28 16:55:29,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:29,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:55:29,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158695036] [2019-11-28 16:55:29,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:29,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:29,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:29,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:29,509 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-28 16:55:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:29,537 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-28 16:55:29,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:29,539 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:29,557 INFO L225 Difference]: With dead ends: 62 [2019-11-28 16:55:29,558 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:55:29,564 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 [2019-11-28 16:55:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:55:29,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:55:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:55:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-28 16:55:29,596 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-28 16:55:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:29,597 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-28 16:55:29,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-28 16:55:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:55:29,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:29,598 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:29,598 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-28 16:55:29,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:29,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130255048] [2019-11-28 16:55:29,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:29,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130255048] [2019-11-28 16:55:29,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:29,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:55:29,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599372168] [2019-11-28 16:55:29,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:29,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:29,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:29,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:29,699 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-28 16:55:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:29,784 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-28 16:55:29,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:29,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 16:55:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:29,786 INFO L225 Difference]: With dead ends: 53 [2019-11-28 16:55:29,786 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 16:55:29,788 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 [2019-11-28 16:55:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 16:55:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-28 16:55:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-28 16:55:29,795 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-28 16:55:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:29,796 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-28 16:55:29,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-28 16:55:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:29,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:29,797 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:29,797 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:29,798 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-28 16:55:29,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:29,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686772211] [2019-11-28 16:55:29,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:29,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686772211] [2019-11-28 16:55:29,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:29,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:55:29,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764645028] [2019-11-28 16:55:29,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:29,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:29,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:29,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:29,883 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-28 16:55:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:29,945 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-28 16:55:29,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:29,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:55:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:29,947 INFO L225 Difference]: With dead ends: 55 [2019-11-28 16:55:29,948 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 16:55:29,948 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 [2019-11-28 16:55:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 16:55:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-28 16:55:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-28 16:55:29,955 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-28 16:55:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:29,956 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-28 16:55:29,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-28 16:55:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:29,957 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:29,957 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:29,957 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-28 16:55:29,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:29,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957091336] [2019-11-28 16:55:29,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:30,080 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:55:30,080 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:55:30,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:30 BoogieIcfgContainer [2019-11-28 16:55:30,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:30,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:30,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:30,115 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:30,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:29" (3/4) ... [2019-11-28 16:55:30,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:55:30,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:30,122 INFO L168 Benchmark]: Toolchain (without parser) took 1747.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -74.0 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:30,122 INFO L168 Benchmark]: CDTParser took 0.35 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. [2019-11-28 16:55:30,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:30,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.98 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:30,125 INFO L168 Benchmark]: Boogie Preprocessor took 45.34 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. [2019-11-28 16:55:30,126 INFO L168 Benchmark]: RCFGBuilder took 398.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:30,127 INFO L168 Benchmark]: TraceAbstraction took 878.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:30,128 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:30,132 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 367.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.98 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.34 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 398.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 878.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 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; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 28 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 0.1.25-f470102 [2019-11-28 16:55:32,228 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 16:55:32,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:32,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:32,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:32,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:32,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:32,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:32,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:32,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:32,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:32,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:32,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:32,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:55:32,363 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:32,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:32,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:32,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:32,365 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:32,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:32,368 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:32,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:32,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:32,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:32,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:32,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:32,370 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:55:32,372 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:55:32,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:32,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:32,373 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:32,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:32,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:32,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:32,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:32,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:32,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:32,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:32,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:32,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:32,377 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:55:32,377 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:55:32,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:32,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:32,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:55:32,378 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-28 16:55:32,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:32,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:32,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:32,765 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:32,766 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:32,767 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-28 16:55:32,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f132ca1e2/5731fbc0ce684ece85b3851760d7fab4/FLAG6f19530db [2019-11-28 16:55:33,302 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:33,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-28 16:55:33,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f132ca1e2/5731fbc0ce684ece85b3851760d7fab4/FLAG6f19530db [2019-11-28 16:55:33,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f132ca1e2/5731fbc0ce684ece85b3851760d7fab4 [2019-11-28 16:55:33,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:33,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:33,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:33,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:33,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:33,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:33" (1/1) ... [2019-11-28 16:55:33,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a48a79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:33, skipping insertion in model container [2019-11-28 16:55:33,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:33" (1/1) ... [2019-11-28 16:55:33,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:33,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:34,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:34,009 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:34,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:34,143 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:34,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34 WrapperNode [2019-11-28 16:55:34,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:34,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:34,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:34,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:34,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:34,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:34,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:34,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:34,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (1/1) ... [2019-11-28 16:55:34,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:34,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:34,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:34,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:34,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (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 [2019-11-28 16:55:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:55:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:34,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:55:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:34,751 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:34,751 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:55:34,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:34 BoogieIcfgContainer [2019-11-28 16:55:34,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:34,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:34,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:34,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:34,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:33" (1/3) ... [2019-11-28 16:55:34,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd44e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:34, skipping insertion in model container [2019-11-28 16:55:34,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:34" (2/3) ... [2019-11-28 16:55:34,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd44e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:34, skipping insertion in model container [2019-11-28 16:55:34,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:34" (3/3) ... [2019-11-28 16:55:34,762 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-28 16:55:34,771 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:34,778 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:34,787 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:34,810 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:34,810 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:34,811 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:34,811 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:34,811 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:34,811 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:34,812 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:34,812 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:55:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:34,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:34,833 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:34,834 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-28 16:55:34,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:34,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324199039] [2019-11-28 16:55:34,849 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 [2019-11-28 16:55:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:34,930 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:55:34,935 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:34,949 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:34,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324199039] [2019-11-28 16:55:34,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:34,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:55:34,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847041944] [2019-11-28 16:55:34,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:34,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:34,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:34,979 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-28 16:55:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:35,000 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-28 16:55:35,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:35,001 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:35,011 INFO L225 Difference]: With dead ends: 62 [2019-11-28 16:55:35,011 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:55:35,015 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 [2019-11-28 16:55:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:55:35,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:55:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:55:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-28 16:55:35,052 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-28 16:55:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:35,052 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-28 16:55:35,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-28 16:55:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:55:35,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:35,053 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:35,272 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:55:35,272 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-28 16:55:35,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:35,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395285937] [2019-11-28 16:55:35,275 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 [2019-11-28 16:55:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:35,367 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:55:35,369 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:35,406 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:35,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395285937] [2019-11-28 16:55:35,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:35,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:55:35,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069168208] [2019-11-28 16:55:35,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:55:35,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:35,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:55:35,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:55:35,456 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-28 16:55:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:35,572 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-28 16:55:35,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:35,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 16:55:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:35,574 INFO L225 Difference]: With dead ends: 68 [2019-11-28 16:55:35,574 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 16:55:35,576 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 [2019-11-28 16:55:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 16:55:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-28 16:55:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-28 16:55:35,584 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-28 16:55:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:35,585 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-28 16:55:35,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:55:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-28 16:55:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:35,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:35,587 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:35,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:55:35,802 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-28 16:55:35,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:35,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686663050] [2019-11-28 16:55:35,805 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 [2019-11-28 16:55:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:35,869 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 16:55:35,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:35,904 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:35,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686663050] [2019-11-28 16:55:35,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:35,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-28 16:55:35,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285442649] [2019-11-28 16:55:35,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:35,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:35,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:35,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:35,939 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-28 16:55:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:36,017 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-28 16:55:36,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:36,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:55:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:36,021 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:55:36,022 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 16:55:36,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:55:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 16:55:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 16:55:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 16:55:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-28 16:55:36,031 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-28 16:55:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:36,031 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-28 16:55:36,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-28 16:55:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:55:36,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:36,035 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:36,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:55:36,250 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:36,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-28 16:55:36,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:36,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583623286] [2019-11-28 16:55:36,253 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 [2019-11-28 16:55:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:36,327 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:55:36,328 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:36,342 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:36,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583623286] [2019-11-28 16:55:36,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:36,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:55:36,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113677037] [2019-11-28 16:55:36,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:55:36,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:55:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:55:36,377 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-28 16:55:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:36,458 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-28 16:55:36,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:36,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-28 16:55:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:36,460 INFO L225 Difference]: With dead ends: 61 [2019-11-28 16:55:36,460 INFO L226 Difference]: Without dead ends: 52 [2019-11-28 16:55:36,461 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 [2019-11-28 16:55:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-28 16:55:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-28 16:55:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:55:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-28 16:55:36,467 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-28 16:55:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:36,468 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 16:55:36,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:55:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-28 16:55:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:55:36,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:36,469 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:36,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:55:36,684 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:36,685 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-28 16:55:36,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:36,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799056032] [2019-11-28 16:55:36,687 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 [2019-11-28 16:55:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:36,775 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 16:55:36,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:36,801 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:36,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799056032] [2019-11-28 16:55:36,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:36,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-28 16:55:36,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678507109] [2019-11-28 16:55:36,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:36,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:36,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:36,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:36,828 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-28 16:55:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:36,843 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-28 16:55:36,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:55:36,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-28 16:55:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:36,845 INFO L225 Difference]: With dead ends: 38 [2019-11-28 16:55:36,845 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 16:55:36,846 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 16:55:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 16:55:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:55:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-28 16:55:36,851 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-28 16:55:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:36,851 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-28 16:55:36,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-28 16:55:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:55:36,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:36,853 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:37,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 16:55:37,076 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-28 16:55:37,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:37,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43515512] [2019-11-28 16:55:37,077 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 [2019-11-28 16:55:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:37,170 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:55:37,172 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:37,233 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:37,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:37,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43515512] [2019-11-28 16:55:37,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:37,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-28 16:55:37,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476159186] [2019-11-28 16:55:37,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 16:55:37,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:37,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 16:55:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 16:55:37,294 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-28 16:55:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:37,411 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-28 16:55:37,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:55:37,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-28 16:55:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:37,412 INFO L225 Difference]: With dead ends: 40 [2019-11-28 16:55:37,413 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 16:55:37,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:55:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 16:55:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-28 16:55:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 16:55:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 16:55:37,421 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-28 16:55:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:37,422 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 16:55:37,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 16:55:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 16:55:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 16:55:37,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:37,425 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:37,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 16:55:37,638 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-28 16:55:37,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:37,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343164103] [2019-11-28 16:55:37,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-28 16:55:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:37,705 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 16:55:37,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:37,731 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:37,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343164103] [2019-11-28 16:55:37,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:37,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-28 16:55:37,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108023825] [2019-11-28 16:55:37,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 16:55:37,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 16:55:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:55:37,764 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-28 16:55:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:37,819 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-28 16:55:37,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:55:37,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-28 16:55:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:37,824 INFO L225 Difference]: With dead ends: 43 [2019-11-28 16:55:37,824 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 16:55:37,825 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:55:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 16:55:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 16:55:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 16:55:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-28 16:55:37,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-28 16:55:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:37,830 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-28 16:55:37,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 16:55:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-28 16:55:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 16:55:37,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:37,831 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:38,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-28 16:55:38,034 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:38,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-28 16:55:38,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:38,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975944428] [2019-11-28 16:55:38,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-28 16:55:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:38,134 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 16:55:38,137 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:38,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:38,235 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:38,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:38,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975944428] [2019-11-28 16:55:38,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:38,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-28 16:55:38,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798546696] [2019-11-28 16:55:38,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 16:55:38,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:38,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 16:55:38,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-28 16:55:38,460 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-28 16:55:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:38,706 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-28 16:55:38,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 16:55:38,710 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-28 16:55:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:38,711 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:55:38,711 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:55:38,712 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-28 16:55:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:55:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:55:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:55:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:55:38,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-28 16:55:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:38,713 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:55:38,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 16:55:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:55:38,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:55:38,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-28 16:55:38,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:55:39,180 INFO L246 CegarLoopResult]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-28 16:55:39,180 INFO L246 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-28 16:55:39,180 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:55:39,180 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:55:39,181 INFO L246 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2019-11-28 16:55:39,181 INFO L246 CegarLoopResult]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-11-28 16:55:39,181 INFO L242 CegarLoopResult]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short9| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2019-11-28 16:55:39,181 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-28 16:55:39,181 INFO L246 CegarLoopResult]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-28 16:55:39,181 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-28 16:55:39,182 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-28 16:55:39,182 INFO L242 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2019-11-28 16:55:39,182 INFO L246 CegarLoopResult]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-28 16:55:39,182 INFO L246 CegarLoopResult]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-28 16:55:39,182 INFO L242 CegarLoopResult]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-28 16:55:39,182 INFO L246 CegarLoopResult]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-28 16:55:39,183 INFO L246 CegarLoopResult]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-28 16:55:39,183 INFO L242 CegarLoopResult]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2019-11-28 16:55:39,183 INFO L242 CegarLoopResult]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-28 16:55:39,183 INFO L246 CegarLoopResult]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-11-28 16:55:39,183 INFO L242 CegarLoopResult]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short9|) [2019-11-28 16:55:39,184 INFO L246 CegarLoopResult]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-11-28 16:55:39,184 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:55:39,184 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-11-28 16:55:39,184 INFO L246 CegarLoopResult]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-28 16:55:39,184 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:55:39,184 INFO L246 CegarLoopResult]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-28 16:55:39,185 INFO L249 CegarLoopResult]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-11-28 16:55:39,185 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-28 16:55:39,185 INFO L246 CegarLoopResult]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-28 16:55:39,185 INFO L242 CegarLoopResult]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|)) [2019-11-28 16:55:39,185 INFO L246 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-28 16:55:39,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:39 BoogieIcfgContainer [2019-11-28 16:55:39,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:39,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:39,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:39,207 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:39,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:34" (3/4) ... [2019-11-28 16:55:39,211 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:55:39,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-28 16:55:39,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 16:55:39,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:55:39,261 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result [2019-11-28 16:55:39,261 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result [2019-11-28 16:55:39,262 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2019-11-28 16:55:39,262 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x [2019-11-28 16:55:39,263 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2019-11-28 16:55:39,297 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:55:39,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:39,300 INFO L168 Benchmark]: Toolchain (without parser) took 5610.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 963.1 MB in the beginning and 820.0 MB in the end (delta: 143.1 MB). Peak memory consumption was 267.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:39,300 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-11-28 16:55:39,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:39,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.34 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. [2019-11-28 16:55:39,302 INFO L168 Benchmark]: Boogie Preprocessor took 55.56 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. [2019-11-28 16:55:39,302 INFO L168 Benchmark]: RCFGBuilder took 497.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:39,303 INFO L168 Benchmark]: TraceAbstraction took 4452.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 820.0 MB in the end (delta: 267.3 MB). Peak memory consumption was 267.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:39,303 INFO L168 Benchmark]: Witness Printer took 91.10 ms. Allocated memory is still 1.2 GB. Free memory is still 820.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:39,306 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 455.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.56 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 497.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4452.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 820.0 MB in the end (delta: 267.3 MB). Peak memory consumption was 267.3 MB. Max. memory is 11.5 GB. * Witness Printer took 91.10 ms. Allocated memory is still 1.2 GB. Free memory is still 820.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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 Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...