./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1250.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/double_req_bl_1250.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01b6390e563edc58f3f7d1f239b082df891f9006 ............................................................................................................................................................................................................................................................................................................................................................... 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/double_req_bl_1250.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01b6390e563edc58f3f7d1f239b082df891f9006 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:50:07,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:50:07,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:50:07,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:50:07,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:50:07,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:50:07,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:50:07,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:50:07,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:50:07,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:50:07,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:50:07,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:50:07,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:50:07,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:50:07,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:50:07,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:50:07,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:50:07,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:50:07,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:50:07,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:50:07,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:50:07,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:50:07,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:50:07,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:50:07,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:50:07,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:50:07,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:50:07,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:50:07,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:50:07,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:50:07,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:50:07,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:50:07,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:50:07,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:50:07,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:50:07,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:50:07,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:50:07,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:50:07,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:50:07,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:50:07,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:50:07,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:50:07,119 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:50:07,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:50:07,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:50:07,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:50:07,121 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:50:07,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:50:07,122 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:50:07,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:50:07,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:50:07,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:50:07,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:50:07,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:50:07,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:50:07,125 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:50:07,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:50:07,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:50:07,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:50:07,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:50:07,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:50:07,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:50:07,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:50:07,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:07,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:50:07,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:50:07,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:50:07,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:50:07,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:50:07,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:50:07,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:50:07,129 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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2019-11-28 16:50:07,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:50:07,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:50:07,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:50:07,469 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:50:07,470 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:50:07,470 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-28 16:50:07,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1503254e/76b56d8619894e51bf917ce14c380f85/FLAGc45de7d6d [2019-11-28 16:50:08,021 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:50:08,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-28 16:50:08,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1503254e/76b56d8619894e51bf917ce14c380f85/FLAGc45de7d6d [2019-11-28 16:50:08,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1503254e/76b56d8619894e51bf917ce14c380f85 [2019-11-28 16:50:08,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:50:08,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:50:08,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:08,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:50:08,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:50:08,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee01756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08, skipping insertion in model container [2019-11-28 16:50:08,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:50:08,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:50:08,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:08,706 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:50:08,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:08,830 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:50:08,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08 WrapperNode [2019-11-28 16:50:08,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:08,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:08,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:50:08,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:50:08,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:08,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:50:08,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:50:08,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:50:08,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (1/1) ... [2019-11-28 16:50:08,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:50:08,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:50:08,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:50:08,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:50:08,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (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 16:50:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:50:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:50:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:50:09,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:50:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:50:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:09,435 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:09,435 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:50:09,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:09 BoogieIcfgContainer [2019-11-28 16:50:09,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:09,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:09,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:09,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:09,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:08" (1/3) ... [2019-11-28 16:50:09,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3331f733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:09, skipping insertion in model container [2019-11-28 16:50:09,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:08" (2/3) ... [2019-11-28 16:50:09,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3331f733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:09, skipping insertion in model container [2019-11-28 16:50:09,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:09" (3/3) ... [2019-11-28 16:50:09,445 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2019-11-28 16:50:09,454 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:09,461 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:09,474 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:09,499 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:09,499 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:09,500 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:09,500 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:09,500 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:09,501 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:09,501 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:09,501 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 16:50:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:50:09,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:09,525 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:09,526 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:09,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:09,532 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-28 16:50:09,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:09,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885400949] [2019-11-28 16:50:09,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:09,655 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 16:50:09,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885400949] [2019-11-28 16:50:09,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:09,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:50:09,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047885623] [2019-11-28 16:50:09,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:09,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:50:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:09,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:09,674 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-28 16:50:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:09,693 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-28 16:50:09,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:09,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:50:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:09,705 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:50:09,706 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:50:09,709 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 16:50:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:50:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:50:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:50:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 16:50:09,751 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-28 16:50:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:09,752 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 16:50:09,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-28 16:50:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:50:09,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:09,754 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:09,755 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-28 16:50:09,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:09,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938121621] [2019-11-28 16:50:09,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:09,926 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 16:50:09,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938121621] [2019-11-28 16:50:09,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:09,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:50:09,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752795367] [2019-11-28 16:50:09,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:50:09,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:50:09,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:50:09,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:50:09,931 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-28 16:50:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:10,042 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-28 16:50:10,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:50:10,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 16:50:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:10,044 INFO L225 Difference]: With dead ends: 41 [2019-11-28 16:50:10,045 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 16:50:10,047 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 16:50:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 16:50:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-28 16:50:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:50:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:50:10,059 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-28 16:50:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:10,060 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:50:10,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:50:10,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:50:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:50:10,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:10,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:10,062 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-28 16:50:10,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:10,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796685170] [2019-11-28 16:50:10,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:10,180 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 16:50:10,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796685170] [2019-11-28 16:50:10,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:10,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:50:10,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754407016] [2019-11-28 16:50:10,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:50:10,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:50:10,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:50:10,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:50:10,183 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-28 16:50:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:10,249 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-28 16:50:10,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:50:10,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:50:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:10,252 INFO L225 Difference]: With dead ends: 43 [2019-11-28 16:50:10,252 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 16:50:10,253 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 16:50:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 16:50:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-28 16:50:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:50:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:50:10,260 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-28 16:50:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:10,260 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:50:10,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:50:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:50:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:50:10,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:10,262 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:10,263 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-28 16:50:10,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:10,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746003362] [2019-11-28 16:50:10,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:10,351 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:50:10,351 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:50:10,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:10 BoogieIcfgContainer [2019-11-28 16:50:10,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:10,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:10,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:10,379 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:10,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:09" (3/4) ... [2019-11-28 16:50:10,384 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:50:10,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:10,387 INFO L168 Benchmark]: Toolchain (without parser) took 2001.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -97.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:10,388 INFO L168 Benchmark]: CDTParser took 0.32 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 16:50:10,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:10,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:10,390 INFO L168 Benchmark]: Boogie Preprocessor took 49.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:10,391 INFO L168 Benchmark]: RCFGBuilder took 496.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:10,392 INFO L168 Benchmark]: TraceAbstraction took 941.15 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:10,392 INFO L168 Benchmark]: Witness Printer took 5.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:10,396 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 445.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 496.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 941.15 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] double res = fmax_double(x, y); [L16] return x != x; [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 16:50:12,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:50:12,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:50:12,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:50:12,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:50:12,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:50:12,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:50:12,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:50:12,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:50:12,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:50:12,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:50:12,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:50:12,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:50:12,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:50:12,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:50:12,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:50:12,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:50:12,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:50:12,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:50:12,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:50:12,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:50:12,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:50:12,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:50:12,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:50:12,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:50:12,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:50:12,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:50:12,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:50:12,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:50:12,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:50:12,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:50:12,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:50:12,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:50:12,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:50:12,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:50:12,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:50:12,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:50:12,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:50:12,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:50:12,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:50:12,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:50:12,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:50:12,425 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:50:12,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:50:12,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:50:12,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:50:12,429 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:50:12,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:50:12,429 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:50:12,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:50:12,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:50:12,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:50:12,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:50:12,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:50:12,432 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:50:12,433 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:50:12,433 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:50:12,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:50:12,434 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:50:12,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:50:12,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:50:12,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:50:12,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:50:12,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:50:12,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:12,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:50:12,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:50:12,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:50:12,437 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:50:12,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:50:12,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:50:12,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:50:12,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:50:12,438 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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2019-11-28 16:50:12,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:50:12,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:50:12,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:50:12,788 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:50:12,788 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:50:12,789 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-28 16:50:12,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9adf11ff/9f4e29163db24bfb83ea8090db6edc7b/FLAG610630bc7 [2019-11-28 16:50:13,338 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:50:13,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-28 16:50:13,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9adf11ff/9f4e29163db24bfb83ea8090db6edc7b/FLAG610630bc7 [2019-11-28 16:50:13,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9adf11ff/9f4e29163db24bfb83ea8090db6edc7b [2019-11-28 16:50:13,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:50:13,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:50:13,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:13,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:50:13,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:50:13,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:13" (1/1) ... [2019-11-28 16:50:13,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7329f79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:13, skipping insertion in model container [2019-11-28 16:50:13,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:13" (1/1) ... [2019-11-28 16:50:13,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:50:13,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:50:14,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:14,052 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:50:14,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:14,180 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:50:14,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14 WrapperNode [2019-11-28 16:50:14,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:14,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:14,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:50:14,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:50:14,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:14,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:50:14,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:50:14,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:50:14,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:50:14,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:50:14,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:50:14,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:50:14,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:50:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:50:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:50:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:50:14,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:50:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:14,854 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:14,854 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:50:14,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:14 BoogieIcfgContainer [2019-11-28 16:50:14,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:14,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:14,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:14,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:14,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:13" (1/3) ... [2019-11-28 16:50:14,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be25885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:14, skipping insertion in model container [2019-11-28 16:50:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14" (2/3) ... [2019-11-28 16:50:14,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be25885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:14, skipping insertion in model container [2019-11-28 16:50:14,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:14" (3/3) ... [2019-11-28 16:50:14,866 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2019-11-28 16:50:14,876 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:14,883 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:14,895 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:14,917 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:14,918 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:14,918 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:14,918 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:14,918 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:14,918 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:14,919 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:14,919 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 16:50:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:50:14,937 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:14,938 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:14,939 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:14,945 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-28 16:50:14,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:14,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427072487] [2019-11-28 16:50:14,958 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 16:50:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:15,053 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:50:15,057 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:15,068 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 16:50:15,068 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:15,072 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 16:50:15,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427072487] [2019-11-28 16:50:15,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:15,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:50:15,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299981022] [2019-11-28 16:50:15,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:15,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:15,094 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-28 16:50:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:15,114 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-28 16:50:15,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:15,116 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:50:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:15,127 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:50:15,127 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:50:15,130 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 16:50:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:50:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:50:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:50:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 16:50:15,165 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-28 16:50:15,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:15,165 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 16:50:15,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-28 16:50:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:50:15,167 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:15,167 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:15,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:50:15,380 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-28 16:50:15,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:15,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145202470] [2019-11-28 16:50:15,384 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 16:50:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:15,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:50:15,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:15,544 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 16:50:15,544 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:15,576 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 16:50:15,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145202470] [2019-11-28 16:50:15,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:15,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:50:15,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926156498] [2019-11-28 16:50:15,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:50:15,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:15,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:50:15,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:50:15,580 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-28 16:50:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:15,746 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-28 16:50:15,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:15,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 16:50:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:15,749 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:50:15,749 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 16:50:15,750 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 16:50:15,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 16:50:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-28 16:50:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:50:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:50:15,760 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-28 16:50:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:15,762 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:50:15,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:50:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:50:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:50:15,764 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:15,764 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:15,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:50:15,974 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-28 16:50:15,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:15,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806809510] [2019-11-28 16:50:15,978 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 16:50:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:16,098 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:50:16,099 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:16,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:50:16,223 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 16:50:16,223 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:16,332 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 16:50:16,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806809510] [2019-11-28 16:50:16,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:16,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:50:16,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20699129] [2019-11-28 16:50:16,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:50:16,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:16,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:50:16,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:50:16,335 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-28 16:50:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:16,928 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-28 16:50:16,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:16,929 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-28 16:50:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:16,930 INFO L225 Difference]: With dead ends: 36 [2019-11-28 16:50:16,930 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 16:50:16,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:50:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 16:50:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-28 16:50:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:50:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-28 16:50:16,936 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-28 16:50:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:16,937 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-28 16:50:16,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:50:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-28 16:50:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:50:16,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:16,938 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:17,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:50:17,152 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-28 16:50:17,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:17,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400377046] [2019-11-28 16:50:17,155 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 16:50:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:17,254 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:50:17,256 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:17,268 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 16:50:17,269 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:17,288 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 16:50:17,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400377046] [2019-11-28 16:50:17,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:17,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:50:17,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904946058] [2019-11-28 16:50:17,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:50:17,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:17,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:50:17,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:50:17,291 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-28 16:50:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:17,398 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-28 16:50:17,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:17,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-28 16:50:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:17,400 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:50:17,400 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 16:50:17,401 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 16:50:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 16:50:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-28 16:50:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:50:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-28 16:50:17,408 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-28 16:50:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:17,409 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-28 16:50:17,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:50:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-28 16:50:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:50:17,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:17,410 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 16:50:17,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:50:17,614 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:17,615 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-28 16:50:17,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:17,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371773438] [2019-11-28 16:50:17,616 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 16:50:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:17,732 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 16:50:17,734 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:17,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:50:17,864 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 16:50:17,864 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:18,070 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 16:50:18,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371773438] [2019-11-28 16:50:18,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:18,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-28 16:50:18,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320972831] [2019-11-28 16:50:18,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 16:50:18,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:18,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 16:50:18,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:50:18,073 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-28 16:50:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:18,637 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-28 16:50:18,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:50:18,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-28 16:50:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:18,639 INFO L225 Difference]: With dead ends: 32 [2019-11-28 16:50:18,639 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 16:50:18,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-28 16:50:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 16:50:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 16:50:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 16:50:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-28 16:50:18,645 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-28 16:50:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:18,646 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-28 16:50:18,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 16:50:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-28 16:50:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 16:50:18,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:18,648 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 16:50:18,848 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 16:50:18,849 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:18,850 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-28 16:50:18,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:18,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149828486] [2019-11-28 16:50:18,852 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 16:50:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:19,007 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:50:19,009 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:19,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:50:19,114 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 16:50:19,114 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:19,205 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 16:50:19,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149828486] [2019-11-28 16:50:19,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:19,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:50:19,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136940110] [2019-11-28 16:50:19,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:50:19,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:19,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:50:19,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:50:19,208 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-28 16:50:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:19,486 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-28 16:50:19,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:19,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-28 16:50:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:19,487 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:50:19,488 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:50:19,488 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:50:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:50:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:50:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:50:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:50:19,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-28 16:50:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:19,490 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:50:19,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:50:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:50:19,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:50:19,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 16:50:19,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:50:19,989 INFO L246 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2019-11-28 16:50:19,989 INFO L246 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2019-11-28 16:50:19,990 INFO L242 CegarLoopResult]: At program point L60-3(lines 53 61) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2019-11-28 16:50:19,990 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:50:19,990 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:50:19,990 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:50:19,990 INFO L246 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2019-11-28 16:50:19,991 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2019-11-28 16:50:19,991 INFO L242 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2019-11-28 16:50:19,991 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:50:19,991 INFO L246 CegarLoopResult]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2019-11-28 16:50:19,991 INFO L242 CegarLoopResult]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-11-28 16:50:19,991 INFO L246 CegarLoopResult]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2019-11-28 16:50:19,991 INFO L246 CegarLoopResult]: For program point L29-5(lines 29 34) no Hoare annotation was computed. [2019-11-28 16:50:19,992 INFO L242 CegarLoopResult]: At program point L29-6(lines 29 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-11-28 16:50:19,992 INFO L246 CegarLoopResult]: For program point L29-7(lines 26 51) no Hoare annotation was computed. [2019-11-28 16:50:19,992 INFO L242 CegarLoopResult]: At program point L50(lines 26 51) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-11-28 16:50:19,992 INFO L242 CegarLoopResult]: At program point L50-1(lines 26 51) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))))) [2019-11-28 16:50:19,992 INFO L246 CegarLoopResult]: For program point L46(lines 46 50) no Hoare annotation was computed. [2019-11-28 16:50:19,992 INFO L246 CegarLoopResult]: For program point L46-1(lines 46 50) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L249 CegarLoopResult]: At program point L75(lines 63 76) the Hoare annotation is: true [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L42(lines 42 50) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L42-1(lines 42 50) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L39(lines 39 50) no Hoare annotation was computed. [2019-11-28 16:50:19,993 INFO L246 CegarLoopResult]: For program point L39-1(lines 39 50) no Hoare annotation was computed. [2019-11-28 16:50:20,000 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:20,006 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:20,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:20,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:20,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:20 BoogieIcfgContainer [2019-11-28 16:50:20,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:20,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:20,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:20,012 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:20,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:14" (3/4) ... [2019-11-28 16:50:20,017 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:50:20,030 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 16:50:20,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:50:20,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:50:20,060 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-28 16:50:20,060 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2019-11-28 16:50:20,061 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2019-11-28 16:50:20,101 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:50:20,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:20,104 INFO L168 Benchmark]: Toolchain (without parser) took 6355.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 61.3 MB). Free memory was 956.3 MB in the beginning and 802.8 MB in the end (delta: 153.5 MB). Peak memory consumption was 214.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:20,104 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:20,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 61.3 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -93.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:20,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.30 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 16:50:20,106 INFO L168 Benchmark]: Boogie Preprocessor took 75.70 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 16:50:20,106 INFO L168 Benchmark]: RCFGBuilder took 545.45 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:20,107 INFO L168 Benchmark]: TraceAbstraction took 5154.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 802.8 MB in the end (delta: 220.4 MB). Peak memory consumption was 220.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:20,107 INFO L168 Benchmark]: Witness Printer took 89.53 ms. Allocated memory is still 1.1 GB. Free memory is still 802.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:20,110 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 432.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 61.3 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -93.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.30 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. * Boogie Preprocessor took 75.70 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. * RCFGBuilder took 545.45 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5154.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 802.8 MB in the end (delta: 220.4 MB). Peak memory consumption was 220.4 MB. Max. memory is 11.5 GB. * Witness Printer took 89.53 ms. Allocated memory is still 1.1 GB. Free memory is still 802.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: 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: 16]: Loop Invariant [2019-11-28 16:50:20,117 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:20,118 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 53]: Loop Invariant [2019-11-28 16:50:20,120 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:20,122 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8512 SizeOfPredicates, 32 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...