./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c1f4b5c4 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_1231b.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 c714d208cb0b1f96f572e8a6108248eb76c73a94 ................................................................................................................................................................................................................................................................................................................................................................ 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_1231b.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 c714d208cb0b1f96f572e8a6108248eb76c73a94 ................................................................................................................................................................................................................................................................................................................................................. 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-c1f4b5c [2019-12-08 15:54:51,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:51,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:51,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:51,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:51,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:51,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:51,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:51,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:51,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:51,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:51,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:51,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:51,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:51,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:51,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:51,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:51,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:51,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:51,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:51,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:51,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:51,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:51,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:51,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:51,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:51,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:51,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:51,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:51,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:51,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:51,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:51,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:51,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:51,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:51,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:51,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:51,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:51,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:51,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:51,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:51,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:51,788 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:51,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:51,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:51,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:51,790 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:51,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:51,791 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:51,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:51,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:51,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:51,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:51,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:51,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:51,793 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:51,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:51,793 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:51,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:51,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:51,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:51,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:51,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:51,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:51,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:51,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:51,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:51,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:51,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:51,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:51,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:51,797 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 -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2019-12-08 15:54:52,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:52,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:52,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:52,152 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:52,152 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:52,153 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-12-08 15:54:52,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8649bdcec/2336042315da42b991c17f4c3d27f681/FLAGf89ad5657 [2019-12-08 15:54:52,650 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:52,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-12-08 15:54:52,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8649bdcec/2336042315da42b991c17f4c3d27f681/FLAGf89ad5657 [2019-12-08 15:54:53,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8649bdcec/2336042315da42b991c17f4c3d27f681 [2019-12-08 15:54:53,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:53,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:53,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:53,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:53,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:53,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9feaa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53, skipping insertion in model container [2019-12-08 15:54:53,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:53,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:53,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:53,321 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:53,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:53,425 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:53,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53 WrapperNode [2019-12-08 15:54:53,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:53,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:53,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:53,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:53,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:53,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:53,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:53,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:53,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (1/1) ... [2019-12-08 15:54:53,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:53,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:53,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:53,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:53,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (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 [2019-12-08 15:54:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:53,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:53,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:53,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:53,983 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:53,983 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-08 15:54:53,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:53 BoogieIcfgContainer [2019-12-08 15:54:53,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:53,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:53,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:53,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:53,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:53" (1/3) ... [2019-12-08 15:54:53,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381de266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:53, skipping insertion in model container [2019-12-08 15:54:53,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:53" (2/3) ... [2019-12-08 15:54:53,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381de266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:53, skipping insertion in model container [2019-12-08 15:54:53,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:53" (3/3) ... [2019-12-08 15:54:53,992 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2019-12-08 15:54:54,011 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:54,017 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:54,028 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:54,053 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:54,053 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:54,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:54,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:54,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:54,054 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:54,054 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:54,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-12-08 15:54:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-08 15:54:54,077 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:54,078 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:54,078 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:54,083 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-12-08 15:54:54,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:54,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352862147] [2019-12-08 15:54:54,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:54,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352862147] [2019-12-08 15:54:54,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:54,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:54,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781886530] [2019-12-08 15:54:54,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:54,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:54,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:54,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:54,226 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-12-08 15:54:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:54,244 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-12-08 15:54:54,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:54,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-08 15:54:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:54,254 INFO L225 Difference]: With dead ends: 56 [2019-12-08 15:54:54,254 INFO L226 Difference]: Without dead ends: 26 [2019-12-08 15:54:54,257 INFO L631 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 [2019-12-08 15:54:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-08 15:54:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-08 15:54:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-08 15:54:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-08 15:54:54,293 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-12-08 15:54:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:54,293 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-08 15:54:54,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-08 15:54:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-08 15:54:54,294 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:54,294 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:54,295 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-12-08 15:54:54,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:54,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107517879] [2019-12-08 15:54:54,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:54,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107517879] [2019-12-08 15:54:54,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:54,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-08 15:54:54,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413869674] [2019-12-08 15:54:54,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-08 15:54:54,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:54,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-08 15:54:54,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-08 15:54:54,404 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-12-08 15:54:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:54,493 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-12-08 15:54:54,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-08 15:54:54,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-08 15:54:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:54,496 INFO L225 Difference]: With dead ends: 40 [2019-12-08 15:54:54,496 INFO L226 Difference]: Without dead ends: 36 [2019-12-08 15:54:54,498 INFO L631 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 [2019-12-08 15:54:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-08 15:54:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-12-08 15:54:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-08 15:54:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-12-08 15:54:54,509 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-12-08 15:54:54,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:54,510 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-08 15:54:54,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-08 15:54:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-12-08 15:54:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:54,511 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:54,512 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:54,512 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:54,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:54,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2019-12-08 15:54:54,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:54,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164593896] [2019-12-08 15:54:54,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:54,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164593896] [2019-12-08 15:54:54,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:54,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-08 15:54:54,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726241695] [2019-12-08 15:54:54,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-08 15:54:54,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:54,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-08 15:54:54,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-08 15:54:54,630 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2019-12-08 15:54:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:54,690 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-12-08 15:54:54,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-08 15:54:54,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-08 15:54:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:54,691 INFO L225 Difference]: With dead ends: 42 [2019-12-08 15:54:54,692 INFO L226 Difference]: Without dead ends: 38 [2019-12-08 15:54:54,692 INFO L631 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 [2019-12-08 15:54:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-08 15:54:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-12-08 15:54:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-08 15:54:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-12-08 15:54:54,698 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2019-12-08 15:54:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:54,698 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-08 15:54:54,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-08 15:54:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-12-08 15:54:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:54,699 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:54,699 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:54,700 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-12-08 15:54:54,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:54,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598226790] [2019-12-08 15:54:54,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:54,800 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:54,800 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:54,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:54 BoogieIcfgContainer [2019-12-08 15:54:54,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:54,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:54,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:54,828 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:54,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:53" (3/4) ... [2019-12-08 15:54:54,832 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:54,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:54,835 INFO L168 Benchmark]: Toolchain (without parser) took 1771.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -70.8 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,835 INFO L168 Benchmark]: CDTParser took 0.39 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. [2019-12-08 15:54:54,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,838 INFO L168 Benchmark]: Boogie Preprocessor took 31.99 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:54,839 INFO L168 Benchmark]: RCFGBuilder took 479.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,840 INFO L168 Benchmark]: TraceAbstraction took 841.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:54,840 INFO L168 Benchmark]: Witness Printer took 4.67 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. [2019-12-08 15:54:54,845 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 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 362.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.99 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 479.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 841.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L16] return x != x; [L62] COND TRUE !isnan_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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-c1f4b5c [2019-12-08 15:54:56,857 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-08 15:54:56,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:56,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:56,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:56,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:56,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:56,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:56,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:56,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:56,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:56,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:56,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:56,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:56,989 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:56,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:56,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:56,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:56,995 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:56,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:56,995 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:56,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:56,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:56,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:56,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:56,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:56,998 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:56,999 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:56,999 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:56,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:56,999 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:56,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:57,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:57,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:57,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:57,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:57,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:57,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:57,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:57,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:57,003 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:57,003 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:57,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:57,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:57,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:57,004 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 -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2019-12-08 15:54:57,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:57,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:57,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:57,332 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:57,333 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:57,334 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-12-08 15:54:57,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2cb3ce0/89509a2ae7cb4f4ab5fe5dc4cf2232e7/FLAG824ea8052 [2019-12-08 15:54:57,885 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:57,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-12-08 15:54:57,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2cb3ce0/89509a2ae7cb4f4ab5fe5dc4cf2232e7/FLAG824ea8052 [2019-12-08 15:54:58,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2cb3ce0/89509a2ae7cb4f4ab5fe5dc4cf2232e7 [2019-12-08 15:54:58,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:58,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:58,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:58,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:58,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:58,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7aa85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58, skipping insertion in model container [2019-12-08 15:54:58,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:58,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:58,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:58,595 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:58,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:58,742 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:58,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58 WrapperNode [2019-12-08 15:54:58,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:58,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:58,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:58,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:58,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:58,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:58,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:58,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:58,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (1/1) ... [2019-12-08 15:54:58,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:58,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:58,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:58,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:58,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (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 [2019-12-08 15:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:59,349 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:59,349 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-08 15:54:59,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:59 BoogieIcfgContainer [2019-12-08 15:54:59,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:59,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:59,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:59,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:59,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:58" (1/3) ... [2019-12-08 15:54:59,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bf354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:59, skipping insertion in model container [2019-12-08 15:54:59,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:58" (2/3) ... [2019-12-08 15:54:59,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bf354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:59, skipping insertion in model container [2019-12-08 15:54:59,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:59" (3/3) ... [2019-12-08 15:54:59,359 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2019-12-08 15:54:59,369 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:59,376 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:59,387 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:59,412 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:59,412 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:59,413 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:59,413 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:59,413 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:59,413 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:59,414 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:59,414 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-12-08 15:54:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-08 15:54:59,436 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:59,437 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:59,438 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:59,444 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-12-08 15:54:59,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:59,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971594257] [2019-12-08 15:54:59,458 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 [2019-12-08 15:54:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:59,571 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:59,577 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:59,596 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:59,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971594257] [2019-12-08 15:54:59,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:59,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:59,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106685547] [2019-12-08 15:54:59,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:59,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:59,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:59,631 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-12-08 15:54:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:59,653 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-12-08 15:54:59,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:59,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-08 15:54:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:59,666 INFO L225 Difference]: With dead ends: 56 [2019-12-08 15:54:59,666 INFO L226 Difference]: Without dead ends: 26 [2019-12-08 15:54:59,669 INFO L631 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 [2019-12-08 15:54:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-08 15:54:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-08 15:54:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-08 15:54:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-08 15:54:59,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-12-08 15:54:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:59,702 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-08 15:54:59,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-08 15:54:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-08 15:54:59,703 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:59,703 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:59,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:54:59,906 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-12-08 15:54:59,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:59,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744786607] [2019-12-08 15:54:59,910 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 [2019-12-08 15:55:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:55:00,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-08 15:55:00,025 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:55:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:55:00,052 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:55:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:55:00,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744786607] [2019-12-08 15:55:00,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:55:00,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-08 15:55:00,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894264292] [2019-12-08 15:55:00,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-08 15:55:00,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:55:00,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-08 15:55:00,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-08 15:55:00,091 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-12-08 15:55:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:55:00,208 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2019-12-08 15:55:00,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-08 15:55:00,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-08 15:55:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:55:00,211 INFO L225 Difference]: With dead ends: 50 [2019-12-08 15:55:00,211 INFO L226 Difference]: Without dead ends: 46 [2019-12-08 15:55:00,214 INFO L631 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 [2019-12-08 15:55:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-08 15:55:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-12-08 15:55:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-08 15:55:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-12-08 15:55:00,225 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-12-08 15:55:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:55:00,227 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-12-08 15:55:00,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-08 15:55:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-12-08 15:55:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:55:00,228 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:55:00,228 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:55:00,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:55:00,429 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:55:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:55:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-12-08 15:55:00,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:55:00,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273774615] [2019-12-08 15:55:00,431 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 [2019-12-08 15:55:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:00,675 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:55:00,675 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:55:00,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-08 15:55:00,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:55:00 BoogieIcfgContainer [2019-12-08 15:55:00,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:55:00,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:55:00,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:55:00,905 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:55:00,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:59" (3/4) ... [2019-12-08 15:55:00,908 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:55:00,964 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:55:00,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:55:00,967 INFO L168 Benchmark]: Toolchain (without parser) took 2701.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -77.7 MB). Peak memory consumption was 70.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:00,968 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-12-08 15:55:00,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:00,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:00,970 INFO L168 Benchmark]: Boogie Preprocessor took 35.81 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. [2019-12-08 15:55:00,971 INFO L168 Benchmark]: RCFGBuilder took 517.00 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:00,972 INFO L168 Benchmark]: TraceAbstraction took 1552.33 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: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:00,972 INFO L168 Benchmark]: Witness Printer took 60.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:00,977 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 477.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.81 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 517.00 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1552.33 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: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. * Witness Printer took 60.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 68]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L16] return x != x; [L62] COND TRUE !isnan_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, 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, 574 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...