./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1251b.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_1251b.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 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ................................................................................................................................................................................................................................................................................................................................................................ 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_1251b.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 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:50:08,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:50:08,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:50:08,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:50:08,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:50:08,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:50:08,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:50:08,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:50:08,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:50:08,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:50:08,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:50:08,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:50:08,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:50:08,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:50:08,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:50:08,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:50:08,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:50:08,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:50:08,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:50:08,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:50:08,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:50:08,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:50:08,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:50:08,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:50:08,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:50:08,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:50:08,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:50:08,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:50:08,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:50:08,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:50:08,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:50:08,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:50:08,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:50:08,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:50:08,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:50:08,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:50:08,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:50:08,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:50:08,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:50:08,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:50:08,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:50:08,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:50:08,216 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:50:08,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:50:08,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:50:08,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:50:08,219 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:50:08,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:50:08,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:50:08,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:50:08,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:50:08,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:50:08,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:50:08,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:50:08,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:50:08,221 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:50:08,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:50:08,222 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:50:08,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:50:08,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:50:08,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:50:08,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:50:08,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:50:08,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:08,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:50:08,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:50:08,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:50:08,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:50:08,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:50:08,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:50:08,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:50:08,226 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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2019-11-28 16:50:08,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:50:08,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:50:08,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:50:08,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:50:08,583 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:50:08,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-28 16:50:08,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bc49d7a/2bfdbbd7a4ca4f9a83e169a57cad6b82/FLAG1846e2cf4 [2019-11-28 16:50:09,181 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:50:09,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-28 16:50:09,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bc49d7a/2bfdbbd7a4ca4f9a83e169a57cad6b82/FLAG1846e2cf4 [2019-11-28 16:50:09,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bc49d7a/2bfdbbd7a4ca4f9a83e169a57cad6b82 [2019-11-28 16:50:09,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:50:09,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:50:09,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:09,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:50:09,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:50:09,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23600b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09, skipping insertion in model container [2019-11-28 16:50:09,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:50:09,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:50:09,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:09,803 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:50:09,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:09,914 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:50:09,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09 WrapperNode [2019-11-28 16:50:09,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:09,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:09,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:50:09,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:50:09,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:09,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:50:09,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:50:09,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:50:09,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (1/1) ... [2019-11-28 16:50:09,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:50:09,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:50:09,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:50:09,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:50:09,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (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 16:50:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:50:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:50:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:50:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:50:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:50:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:10,445 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:10,445 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:50:10,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:10 BoogieIcfgContainer [2019-11-28 16:50:10,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:10,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:10,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:10,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:10,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:09" (1/3) ... [2019-11-28 16:50:10,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff90152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:10, skipping insertion in model container [2019-11-28 16:50:10,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:09" (2/3) ... [2019-11-28 16:50:10,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff90152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:10, skipping insertion in model container [2019-11-28 16:50:10,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:10" (3/3) ... [2019-11-28 16:50:10,454 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2019-11-28 16:50:10,463 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:10,471 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:10,481 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:10,501 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:10,502 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:10,502 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:10,502 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:10,502 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:10,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:10,503 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:10,503 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 16:50:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:50:10,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:10,524 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:10,525 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-28 16:50:10,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:10,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839928270] [2019-11-28 16:50:10,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:10,654 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 16:50:10,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839928270] [2019-11-28 16:50:10,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:10,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:50:10,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441996602] [2019-11-28 16:50:10,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:10,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:50:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:10,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:10,681 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-28 16:50:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:10,699 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-28 16:50:10,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:10,700 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 16:50:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:10,709 INFO L225 Difference]: With dead ends: 56 [2019-11-28 16:50:10,709 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 16:50:10,713 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 16:50:10,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 16:50:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 16:50:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 16:50:10,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-28 16:50:10,748 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-28 16:50:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:10,748 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-28 16:50:10,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-28 16:50:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:50:10,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:10,750 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:10,750 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:10,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-28 16:50:10,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:10,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504039757] [2019-11-28 16:50:10,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:10,848 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 16:50:10,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504039757] [2019-11-28 16:50:10,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:10,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:50:10,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405638963] [2019-11-28 16:50:10,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:50:10,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:50:10,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:50:10,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:50:10,852 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-11-28 16:50:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:10,936 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-28 16:50:10,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:50:10,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 16:50:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:10,938 INFO L225 Difference]: With dead ends: 40 [2019-11-28 16:50:10,938 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 16:50:10,940 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 16:50:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 16:50:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-28 16:50:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:50:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-28 16:50:10,948 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-28 16:50:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:10,949 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-28 16:50:10,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:50:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-28 16:50:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:50:10,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:10,950 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:10,951 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2019-11-28 16:50:10,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:10,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520348015] [2019-11-28 16:50:10,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:11,039 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 16:50:11,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520348015] [2019-11-28 16:50:11,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:11,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:50:11,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926819361] [2019-11-28 16:50:11,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:50:11,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:50:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:50:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:50:11,042 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2019-11-28 16:50:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:11,093 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-11-28 16:50:11,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:50:11,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-28 16:50:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:11,094 INFO L225 Difference]: With dead ends: 42 [2019-11-28 16:50:11,095 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 16:50:11,095 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 16:50:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 16:50:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-11-28 16:50:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:50:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-28 16:50:11,101 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2019-11-28 16:50:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:11,101 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-28 16:50:11,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:50:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-28 16:50:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:50:11,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:11,103 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:11,103 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:11,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-28 16:50:11,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:11,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765300082] [2019-11-28 16:50:11,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:11,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:50:11,198 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:50:11,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:11 BoogieIcfgContainer [2019-11-28 16:50:11,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:11,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:11,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:11,226 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:11,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:10" (3/4) ... [2019-11-28 16:50:11,230 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:50:11,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:11,232 INFO L168 Benchmark]: Toolchain (without parser) took 1686.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -81.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:11,233 INFO L168 Benchmark]: CDTParser took 0.80 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 16:50:11,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:11,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.69 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 16:50:11,235 INFO L168 Benchmark]: Boogie Preprocessor took 34.81 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 16:50:11,236 INFO L168 Benchmark]: RCFGBuilder took 449.44 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:11,237 INFO L168 Benchmark]: TraceAbstraction took 777.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:11,237 INFO L168 Benchmark]: Witness Printer took 4.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:11,241 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 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 368.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.69 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 34.81 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 449.44 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 777.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L16] return x != x; [L72] COND TRUE !isnan_double(x) [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; [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 20 SDslu, 112 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=30occurred 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, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 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 16:50:13,269 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 16:50:13,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:50:13,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:50:13,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:50:13,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:50:13,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:50:13,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:50:13,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:50:13,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:50:13,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:50:13,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:50:13,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:50:13,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:50:13,380 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:50:13,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:50:13,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:50:13,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:50:13,385 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:50:13,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:50:13,386 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:50:13,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:50:13,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:50:13,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:50:13,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:50:13,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:50:13,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:50:13,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:50:13,389 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:50:13,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:50:13,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:50:13,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:50:13,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:50:13,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:50:13,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:50:13,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:50:13,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:13,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:50:13,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:50:13,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:50:13,393 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:50:13,393 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:50:13,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:50:13,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:50:13,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:50:13,394 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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2019-11-28 16:50:13,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:50:13,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:50:13,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:50:13,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:50:13,702 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:50:13,703 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-28 16:50:13,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae2231f9c/a497d4b05e454093bc77770f2d4c2cd5/FLAGca4ef4dd9 [2019-11-28 16:50:14,263 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:50:14,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-28 16:50:14,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae2231f9c/a497d4b05e454093bc77770f2d4c2cd5/FLAGca4ef4dd9 [2019-11-28 16:50:14,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae2231f9c/a497d4b05e454093bc77770f2d4c2cd5 [2019-11-28 16:50:14,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:50:14,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:50:14,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:14,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:50:14,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:50:14,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e76458f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:14, skipping insertion in model container [2019-11-28 16:50:14,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:14" (1/1) ... [2019-11-28 16:50:14,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:50:14,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:50:14,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:14,930 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:50:15,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:15,093 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:50:15,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15 WrapperNode [2019-11-28 16:50:15,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:15,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:15,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:50:15,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:50:15,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:15,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:50:15,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:50:15,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:50:15,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (1/1) ... [2019-11-28 16:50:15,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:50:15,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:50:15,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:50:15,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:50:15,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (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 16:50:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:50:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:50:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:50:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:50:15,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:50:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:15,740 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:15,740 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:50:15,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:15 BoogieIcfgContainer [2019-11-28 16:50:15,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:15,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:15,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:15,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:15,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:14" (1/3) ... [2019-11-28 16:50:15,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4c36b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:15, skipping insertion in model container [2019-11-28 16:50:15,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:15" (2/3) ... [2019-11-28 16:50:15,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4c36b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:15, skipping insertion in model container [2019-11-28 16:50:15,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:15" (3/3) ... [2019-11-28 16:50:15,751 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2019-11-28 16:50:15,762 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:15,772 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:15,783 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:15,809 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:15,809 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:15,810 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:15,810 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:15,810 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:15,810 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:15,811 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:15,811 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 16:50:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:50:15,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:15,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:15,832 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-28 16:50:15,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:15,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169587226] [2019-11-28 16:50:15,850 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 16:50:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:15,966 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:50:15,974 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:15,993 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 16:50:15,993 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:16,001 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 16:50:16,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169587226] [2019-11-28 16:50:16,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:16,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:50:16,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222346197] [2019-11-28 16:50:16,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:16,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:16,028 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-28 16:50:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:16,047 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-28 16:50:16,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:16,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 16:50:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:16,060 INFO L225 Difference]: With dead ends: 56 [2019-11-28 16:50:16,061 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 16:50:16,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 16:50:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 16:50:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 16:50:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 16:50:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-28 16:50:16,101 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-28 16:50:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:16,101 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-28 16:50:16,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-28 16:50:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:50:16,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:16,103 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:16,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:50:16,317 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:16,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:16,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-28 16:50:16,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:16,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494334677] [2019-11-28 16:50:16,321 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 16:50:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:16,447 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:50:16,449 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:16,485 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:16,517 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 16:50:16,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494334677] [2019-11-28 16:50:16,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:16,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:50:16,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892653262] [2019-11-28 16:50:16,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:50:16,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:16,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:50:16,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:50:16,521 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-11-28 16:50:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:16,664 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2019-11-28 16:50:16,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:16,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 16:50:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:16,668 INFO L225 Difference]: With dead ends: 50 [2019-11-28 16:50:16,668 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 16:50:16,671 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 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 16:50:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 16:50:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-11-28 16:50:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:50:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-28 16:50:16,680 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-28 16:50:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:16,680 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-28 16:50:16,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:50:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-28 16:50:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:50:16,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:16,681 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:16,895 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:50:16,895 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-28 16:50:16,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:16,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547508398] [2019-11-28 16:50:16,898 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 16:50:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:17,154 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:50:17,154 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:50:17,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:50:17,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:17 BoogieIcfgContainer [2019-11-28 16:50:17,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:17,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:17,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:17,398 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:17,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:15" (3/4) ... [2019-11-28 16:50:17,412 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:50:17,468 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:50:17,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:17,471 INFO L168 Benchmark]: Toolchain (without parser) took 2853.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -84.3 MB). Peak memory consumption was 61.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:17,472 INFO L168 Benchmark]: CDTParser took 0.25 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 16:50:17,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:17,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:17,475 INFO L168 Benchmark]: Boogie Preprocessor took 41.70 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 16:50:17,476 INFO L168 Benchmark]: RCFGBuilder took 551.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:17,478 INFO L168 Benchmark]: TraceAbstraction took 1653.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:17,479 INFO L168 Benchmark]: Witness Printer took 71.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:17,487 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 475.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.70 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 551.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1653.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 11.5 GB. * Witness Printer took 71.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 78]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L16] return x != x; [L72] COND TRUE !isnan_double(x) [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; [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 64 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 1 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...