./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1232a.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_1232a.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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ........................................................................................................................................................................................................................................................................................................................................................... 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_1232a.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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:55:18,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:18,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:18,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:18,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:18,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:18,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:18,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:18,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:18,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:18,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:18,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:18,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:18,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:18,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:18,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:18,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:18,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:18,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:18,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:18,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:18,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:18,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:18,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:18,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:18,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:18,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:18,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:18,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:18,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:18,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:18,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:18,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:18,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:18,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:18,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:18,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:18,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:18,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:18,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:18,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:18,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:55:18,113 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:18,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:18,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:18,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:18,115 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:18,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:18,116 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:18,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:55:18,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:18,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:18,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:18,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:18,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:18,117 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:18,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:18,117 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:18,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:18,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:18,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:18,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:18,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:18,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:18,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:18,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:18,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:18,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:55:18,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:55:18,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:18,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:18,120 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-11-28 16:55:18,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:18,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:18,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:18,488 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:18,490 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:18,491 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-28 16:55:18,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72166bed/7c2754688c724483bcf1d3cbdc490eb1/FLAG25bdca2af [2019-11-28 16:55:18,988 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:18,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-28 16:55:18,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72166bed/7c2754688c724483bcf1d3cbdc490eb1/FLAG25bdca2af [2019-11-28 16:55:19,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72166bed/7c2754688c724483bcf1d3cbdc490eb1 [2019-11-28 16:55:19,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:19,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:19,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:19,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:19,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:19,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4d7392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19, skipping insertion in model container [2019-11-28 16:55:19,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:19,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:19,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:19,667 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:19,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:19,805 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:19,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19 WrapperNode [2019-11-28 16:55:19,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:19,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:19,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:19,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:19,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:19,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:19,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:19,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:19,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... [2019-11-28 16:55:19,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:19,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:19,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:19,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:19,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:55:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:20,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:55:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:20,428 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:20,428 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:55:20,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:20 BoogieIcfgContainer [2019-11-28 16:55:20,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:20,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:20,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:20,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:20,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:19" (1/3) ... [2019-11-28 16:55:20,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bda06ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:20, skipping insertion in model container [2019-11-28 16:55:20,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:19" (2/3) ... [2019-11-28 16:55:20,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bda06ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:20, skipping insertion in model container [2019-11-28 16:55:20,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:20" (3/3) ... [2019-11-28 16:55:20,437 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-11-28 16:55:20,447 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:20,454 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:20,467 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:20,489 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:20,489 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:20,489 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:20,490 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:20,490 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:20,490 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:20,490 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:20,490 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:55:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:20,511 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:20,511 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:20,512 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-28 16:55:20,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:20,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074853950] [2019-11-28 16:55:20,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:20,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074853950] [2019-11-28 16:55:20,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:20,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:55:20,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255674418] [2019-11-28 16:55:20,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:20,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:20,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:20,663 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-28 16:55:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:20,684 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-28 16:55:20,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:20,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:20,696 INFO L225 Difference]: With dead ends: 62 [2019-11-28 16:55:20,696 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:55:20,700 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 16:55:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:55:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:55:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:55:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-28 16:55:20,736 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-28 16:55:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:20,736 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-28 16:55:20,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-28 16:55:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:55:20,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:20,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:20,738 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-28 16:55:20,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:20,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230211736] [2019-11-28 16:55:20,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:20,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230211736] [2019-11-28 16:55:20,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:20,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:55:20,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509685838] [2019-11-28 16:55:20,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:20,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:20,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:20,835 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-28 16:55:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:20,918 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-28 16:55:20,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:20,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 16:55:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:20,921 INFO L225 Difference]: With dead ends: 53 [2019-11-28 16:55:20,921 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 16:55:20,922 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 16:55:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 16:55:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-28 16:55:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-28 16:55:20,930 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-28 16:55:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:20,930 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-28 16:55:20,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-28 16:55:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:20,933 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:20,933 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:20,934 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:20,935 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-28 16:55:20,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:20,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640806480] [2019-11-28 16:55:20,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:20,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640806480] [2019-11-28 16:55:20,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:20,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:55:20,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784329935] [2019-11-28 16:55:20,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:20,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:20,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:20,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:20,990 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-28 16:55:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:21,070 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-28 16:55:21,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:21,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:55:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:21,072 INFO L225 Difference]: With dead ends: 55 [2019-11-28 16:55:21,073 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 16:55:21,073 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 16:55:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 16:55:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-28 16:55:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-28 16:55:21,079 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-28 16:55:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:21,080 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-28 16:55:21,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-28 16:55:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:21,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:21,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:21,083 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-28 16:55:21,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:21,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172259632] [2019-11-28 16:55:21,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:21,163 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:55:21,163 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:55:21,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:21 BoogieIcfgContainer [2019-11-28 16:55:21,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:21,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:21,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:21,193 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:21,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:20" (3/4) ... [2019-11-28 16:55:21,197 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:55:21,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:21,200 INFO L168 Benchmark]: Toolchain (without parser) took 1828.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.4 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -41.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:21,200 INFO L168 Benchmark]: CDTParser took 0.62 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 16:55:21,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -110.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:21,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:21,202 INFO L168 Benchmark]: Boogie Preprocessor took 52.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:21,203 INFO L168 Benchmark]: RCFGBuilder took 501.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:21,204 INFO L168 Benchmark]: TraceAbstraction took 761.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:21,204 INFO L168 Benchmark]: Witness Printer took 4.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:55:21,208 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 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 434.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -110.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 501.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 761.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, 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, 0.0s 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 16:55:23,129 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 16:55:23,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:23,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:23,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:23,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:23,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:23,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:23,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:23,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:23,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:23,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:23,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:23,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:55:23,224 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:23,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:23,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:23,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:23,226 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:23,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:23,227 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:23,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:23,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:23,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:23,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:23,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:23,229 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:55:23,229 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:55:23,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:23,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:23,230 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:23,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:23,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:23,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:23,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:23,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:23,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:23,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:23,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:23,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:23,232 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:55:23,233 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:55:23,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:23,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:23,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:55:23,234 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-11-28 16:55:23,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:23,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:23,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:23,560 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:23,560 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:23,561 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-28 16:55:23,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04b3cbb06/72d7baea9a5c4e7e8a8e912e25e40869/FLAGeb9ed9b5f [2019-11-28 16:55:24,088 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:24,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-28 16:55:24,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04b3cbb06/72d7baea9a5c4e7e8a8e912e25e40869/FLAGeb9ed9b5f [2019-11-28 16:55:24,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04b3cbb06/72d7baea9a5c4e7e8a8e912e25e40869 [2019-11-28 16:55:24,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:24,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:24,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:24,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:24,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:24,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db3d399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24, skipping insertion in model container [2019-11-28 16:55:24,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:24,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:24,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:24,750 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:24,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:24,863 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:24,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24 WrapperNode [2019-11-28 16:55:24,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:24,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:24,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:24,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:24,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:24,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:24,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:24,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:24,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (1/1) ... [2019-11-28 16:55:24,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:24,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:24,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:24,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:24,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (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 16:55:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:55:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:55:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:25,398 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:25,399 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:55:25,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:25 BoogieIcfgContainer [2019-11-28 16:55:25,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:25,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:25,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:25,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:25,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:24" (1/3) ... [2019-11-28 16:55:25,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a077cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:25, skipping insertion in model container [2019-11-28 16:55:25,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:24" (2/3) ... [2019-11-28 16:55:25,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a077cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:25, skipping insertion in model container [2019-11-28 16:55:25,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:25" (3/3) ... [2019-11-28 16:55:25,409 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-11-28 16:55:25,416 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:25,421 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:25,432 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:25,451 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:25,451 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:25,451 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:25,451 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:25,452 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:25,452 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:25,452 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:25,452 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:55:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:25,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:25,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:25,471 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-28 16:55:25,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:25,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631988645] [2019-11-28 16:55:25,486 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 16:55:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:25,558 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:55:25,563 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:25,578 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 16:55:25,578 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:25,581 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 16:55:25,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631988645] [2019-11-28 16:55:25,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:25,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:55:25,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159099414] [2019-11-28 16:55:25,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:25,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:25,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:25,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:25,601 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-28 16:55:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:25,622 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-28 16:55:25,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:25,623 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:25,634 INFO L225 Difference]: With dead ends: 62 [2019-11-28 16:55:25,634 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 16:55:25,638 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 16:55:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 16:55:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 16:55:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 16:55:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-28 16:55:25,674 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-28 16:55:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:25,675 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-28 16:55:25,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-28 16:55:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:55:25,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:25,676 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:25,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:55:25,890 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-28 16:55:25,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:25,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495539590] [2019-11-28 16:55:25,893 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 16:55:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:25,975 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:55:25,976 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:26,002 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 16:55:26,002 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:26,025 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 16:55:26,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495539590] [2019-11-28 16:55:26,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:26,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:55:26,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62355169] [2019-11-28 16:55:26,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:55:26,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:26,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:55:26,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:55:26,029 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-28 16:55:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:26,188 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-28 16:55:26,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:26,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 16:55:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:26,191 INFO L225 Difference]: With dead ends: 68 [2019-11-28 16:55:26,192 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 16:55:26,194 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 16:55:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 16:55:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-28 16:55:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 16:55:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-28 16:55:26,208 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-28 16:55:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:26,210 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-28 16:55:26,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:55:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-28 16:55:26,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:26,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:26,214 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:26,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:55:26,429 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-28 16:55:26,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:26,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076839610] [2019-11-28 16:55:26,432 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 16:55:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:26,490 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 16:55:26,492 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:26,547 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 16:55:26,548 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:26,579 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 16:55:26,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076839610] [2019-11-28 16:55:26,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:26,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-28 16:55:26,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247351110] [2019-11-28 16:55:26,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:26,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:26,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:26,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:26,582 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-28 16:55:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:26,668 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-28 16:55:26,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:26,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:55:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:26,671 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:55:26,671 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 16:55:26,672 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 16:55:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 16:55:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 16:55:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 16:55:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-28 16:55:26,680 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-28 16:55:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:26,682 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-28 16:55:26,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-28 16:55:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:55:26,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:26,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:26,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:55:26,897 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:26,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:26,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-28 16:55:26,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:26,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204315551] [2019-11-28 16:55:26,900 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 16:55:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:26,967 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:55:26,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:26,997 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 16:55:26,997 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:27,018 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 16:55:27,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204315551] [2019-11-28 16:55:27,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:27,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:55:27,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394515391] [2019-11-28 16:55:27,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:55:27,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:27,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:55:27,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:55:27,022 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-28 16:55:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:27,122 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-28 16:55:27,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:27,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-28 16:55:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:27,124 INFO L225 Difference]: With dead ends: 61 [2019-11-28 16:55:27,126 INFO L226 Difference]: Without dead ends: 52 [2019-11-28 16:55:27,127 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 16:55:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-28 16:55:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-28 16:55:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:55:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-28 16:55:27,136 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-28 16:55:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:27,136 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 16:55:27,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:55:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-28 16:55:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:55:27,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:27,140 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 16:55:27,353 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:55:27,354 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:27,355 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-28 16:55:27,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:27,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198373433] [2019-11-28 16:55:27,357 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 16:55:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:27,427 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 16:55:27,429 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:27,457 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 16:55:27,457 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:27,475 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 16:55:27,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198373433] [2019-11-28 16:55:27,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:27,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-28 16:55:27,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319478833] [2019-11-28 16:55:27,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:27,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:27,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:27,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:27,478 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-28 16:55:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:27,492 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-28 16:55:27,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:55:27,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-28 16:55:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:27,495 INFO L225 Difference]: With dead ends: 38 [2019-11-28 16:55:27,495 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 16:55:27,496 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 16:55:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 16:55:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 16:55:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:55:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-28 16:55:27,501 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-28 16:55:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:27,502 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-28 16:55:27,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-28 16:55:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:55:27,503 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:27,503 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 16:55:27,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 16:55:27,714 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-28 16:55:27,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:27,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96612863] [2019-11-28 16:55:27,717 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 16:55:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:27,792 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:55:27,794 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:27,837 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 16:55:27,838 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:27,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:27,897 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 16:55:27,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96612863] [2019-11-28 16:55:27,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:27,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-28 16:55:27,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055558599] [2019-11-28 16:55:27,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 16:55:27,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:27,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 16:55:27,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 16:55:27,900 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-28 16:55:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:28,011 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-28 16:55:28,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:55:28,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-28 16:55:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:28,013 INFO L225 Difference]: With dead ends: 40 [2019-11-28 16:55:28,014 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 16:55:28,014 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 16:55:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 16:55:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-28 16:55:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 16:55:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 16:55:28,027 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-28 16:55:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:28,027 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 16:55:28,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 16:55:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 16:55:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 16:55:28,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:28,029 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 16:55:28,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 16:55:28,240 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:28,241 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-28 16:55:28,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:28,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823246757] [2019-11-28 16:55:28,243 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 16:55:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:28,304 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 16:55:28,306 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:28,333 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 16:55:28,333 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:28,355 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 16:55:28,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823246757] [2019-11-28 16:55:28,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:28,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-28 16:55:28,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448155456] [2019-11-28 16:55:28,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 16:55:28,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:28,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 16:55:28,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:55:28,358 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-28 16:55:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:28,426 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-28 16:55:28,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:55:28,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-28 16:55:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:28,428 INFO L225 Difference]: With dead ends: 43 [2019-11-28 16:55:28,428 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 16:55:28,428 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 16:55:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 16:55:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 16:55:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 16:55:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-28 16:55:28,432 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-28 16:55:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:28,433 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-28 16:55:28,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 16:55:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-28 16:55:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 16:55:28,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:28,434 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 16:55:28,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-28 16:55:28,635 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-28 16:55:28,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:28,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048894951] [2019-11-28 16:55:28,638 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 16:55:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:28,716 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 16:55:28,719 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:28,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:28,820 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 16:55:28,820 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:28,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:29,089 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 16:55:29,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048894951] [2019-11-28 16:55:29,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:29,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-28 16:55:29,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125427434] [2019-11-28 16:55:29,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 16:55:29,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:29,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 16:55:29,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-28 16:55:29,092 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-28 16:55:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:29,307 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-28 16:55:29,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 16:55:29,311 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-28 16:55:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:29,311 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:55:29,311 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:55:29,312 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 16:55:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:55:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:55:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:55:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:55:29,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-28 16:55:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:29,313 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:55:29,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 16:55:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:55:29,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:55:29,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-28 16:55:29,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:55:29,770 INFO L246 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2019-11-28 16:55:29,770 INFO L246 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-11-28 16:55:29,770 INFO L246 CegarLoopResult]: For program point L69-2(lines 69 72) no Hoare annotation was computed. [2019-11-28 16:55:29,770 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:55:29,771 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:55:29,771 INFO L242 CegarLoopResult]: At program point L53(lines 44 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .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))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (_ bv0 32) (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32))) (= (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)) .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-28 16:55:29,771 INFO L246 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2019-11-28 16:55:29,771 INFO L246 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2019-11-28 16:55:29,772 INFO L246 CegarLoopResult]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2019-11-28 16:55:29,772 INFO L246 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-28 16:55:29,772 INFO L246 CegarLoopResult]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2019-11-28 16:55:29,772 INFO L242 CegarLoopResult]: At program point L47-2(lines 47 51) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .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))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-28 16:55:29,772 INFO L246 CegarLoopResult]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2019-11-28 16:55:29,772 INFO L246 CegarLoopResult]: For program point L23(lines 23 32) no Hoare annotation was computed. [2019-11-28 16:55:29,773 INFO L246 CegarLoopResult]: For program point L23-1(lines 23 32) no Hoare annotation was computed. [2019-11-28 16:55:29,773 INFO L246 CegarLoopResult]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-11-28 16:55:29,773 INFO L242 CegarLoopResult]: At program point L15-2(lines 15 19) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-28 16:55:29,773 INFO L246 CegarLoopResult]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2019-11-28 16:55:29,773 INFO L246 CegarLoopResult]: For program point L15-5(lines 15 19) no Hoare annotation was computed. [2019-11-28 16:55:29,773 INFO L242 CegarLoopResult]: At program point L15-6(lines 15 19) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-28 16:55:29,774 INFO L246 CegarLoopResult]: For program point L15-7(lines 12 33) no Hoare annotation was computed. [2019-11-28 16:55:29,774 INFO L242 CegarLoopResult]: At program point L32(lines 12 33) the Hoare annotation is: (and (= (_ +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_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-28 16:55:29,774 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:55:29,774 INFO L242 CegarLoopResult]: At program point L32-1(lines 12 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .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))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-28 16:55:29,774 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2019-11-28 16:55:29,775 INFO L249 CegarLoopResult]: At program point L74(lines 56 75) the Hoare annotation is: true [2019-11-28 16:55:29,775 INFO L246 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2019-11-28 16:55:29,775 INFO L246 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2019-11-28 16:55:29,775 INFO L242 CegarLoopResult]: At program point L41-3(lines 35 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .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))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-28 16:55:29,775 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:55:29,775 INFO L246 CegarLoopResult]: For program point L26(lines 26 32) no Hoare annotation was computed. [2019-11-28 16:55:29,775 INFO L246 CegarLoopResult]: For program point L26-1(lines 26 32) no Hoare annotation was computed. [2019-11-28 16:55:29,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:29 BoogieIcfgContainer [2019-11-28 16:55:29,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:29,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:29,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:29,797 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:29,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:25" (3/4) ... [2019-11-28 16:55:29,801 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:55:29,813 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-28 16:55:29,814 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 16:55:29,814 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:55:29,839 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:55:29,840 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:55:29,840 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:55:29,841 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:55:29,841 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-28 16:55:29,881 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:55:29,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:29,884 INFO L168 Benchmark]: Toolchain (without parser) took 5372.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 961.7 MB in the beginning and 830.2 MB in the end (delta: 131.5 MB). Peak memory consumption was 271.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,884 INFO L168 Benchmark]: CDTParser took 0.18 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 16:55:29,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,886 INFO L168 Benchmark]: Boogie Preprocessor took 36.80 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,887 INFO L168 Benchmark]: RCFGBuilder took 452.30 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,887 INFO L168 Benchmark]: TraceAbstraction took 4394.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 836.7 MB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,888 INFO L168 Benchmark]: Witness Printer took 85.40 ms. Allocated memory is still 1.2 GB. Free memory was 836.7 MB in the beginning and 830.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:29,893 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 352.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.80 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 452.30 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4394.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 836.7 MB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 11.5 GB. * Witness Printer took 85.40 ms. Allocated memory is still 1.2 GB. Free memory was 836.7 MB in the beginning and 830.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 12]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 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...