./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730a.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_0730a.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 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 ................................................................................................................................................................................................................................................................................................. 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_0730a.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 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 ............................................................................................................................................................................................................................................................................................................... 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 16:47:21,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:47:21,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:47:21,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:47:21,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:47:21,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:47:21,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:47:21,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:47:21,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:47:21,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:47:21,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:47:21,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:47:21,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:47:21,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:47:21,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:47:21,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:47:21,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:47:21,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:47:21,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:47:21,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:47:21,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:47:21,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:47:21,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:47:21,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:47:21,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:47:21,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:47:21,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:47:21,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:47:21,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:47:21,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:47:21,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:47:21,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:47:21,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:47:21,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:47:21,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:47:21,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:47:21,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:47:21,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:47:21,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:47:21,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:47:21,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:47:21,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:47:21,947 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:47:21,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:47:21,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:47:21,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:47:21,950 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:47:21,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:47:21,951 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:47:21,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:47:21,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:47:21,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:47:21,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:47:21,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:47:21,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:47:21,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:47:21,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:47:21,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:47:21,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:47:21,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:47:21,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:47:21,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:47:21,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:47:21,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:47:21,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:47:21,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:47:21,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:47:21,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:47:21,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:47:21,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:47:21,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:47:21,959 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 -> 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 [2019-11-28 16:47:22,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:47:22,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:47:22,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:47:22,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:47:22,319 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:47:22,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-28 16:47:22,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e5cc5b2/649bf2da78134598bb18401eb7ba158c/FLAG4c98a9e1d [2019-11-28 16:47:22,957 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:47:22,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-28 16:47:22,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e5cc5b2/649bf2da78134598bb18401eb7ba158c/FLAG4c98a9e1d [2019-11-28 16:47:23,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e5cc5b2/649bf2da78134598bb18401eb7ba158c [2019-11-28 16:47:23,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:47:23,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:47:23,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:47:23,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:47:23,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:47:23,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8488f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23, skipping insertion in model container [2019-11-28 16:47:23,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:47:23,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:47:23,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:47:23,541 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:47:23,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:47:23,675 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:47:23,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23 WrapperNode [2019-11-28 16:47:23,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:47:23,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:47:23,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:47:23,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:47:23,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:47:23,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:47:23,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:47:23,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:47:23,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (1/1) ... [2019-11-28 16:47:23,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:47:23,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:47:23,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:47:23,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:47:23,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (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 16:47:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:47:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:47:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:47:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:47:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:47:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:47:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:47:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:47:24,442 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:47:24,443 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:47:24,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:24 BoogieIcfgContainer [2019-11-28 16:47:24,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:47:24,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:47:24,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:47:24,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:47:24,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:47:23" (1/3) ... [2019-11-28 16:47:24,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb2af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:24, skipping insertion in model container [2019-11-28 16:47:24,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:23" (2/3) ... [2019-11-28 16:47:24,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb2af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:24, skipping insertion in model container [2019-11-28 16:47:24,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:24" (3/3) ... [2019-11-28 16:47:24,453 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2019-11-28 16:47:24,464 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:47:24,472 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:47:24,485 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:47:24,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:47:24,514 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:47:24,514 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:47:24,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:47:24,514 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:47:24,515 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:47:24,515 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:47:24,515 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:47:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-28 16:47:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:47:24,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:47:24,538 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:47:24,539 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:47:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:47:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2019-11-28 16:47:24,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:47:24,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187202600] [2019-11-28 16:47:24,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:47:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:47:24,672 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 16:47:24,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187202600] [2019-11-28 16:47:24,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:47:24,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:47:24,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495438279] [2019-11-28 16:47:24,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:47:24,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:47:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:47:24,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:47:24,699 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-28 16:47:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:47:24,720 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2019-11-28 16:47:24,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:47:24,722 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:47:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:47:24,733 INFO L225 Difference]: With dead ends: 102 [2019-11-28 16:47:24,733 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 16:47:24,737 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 16:47:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 16:47:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-11-28 16:47:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 16:47:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2019-11-28 16:47:24,777 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2019-11-28 16:47:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:47:24,778 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2019-11-28 16:47:24,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:47:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2019-11-28 16:47:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:47:24,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:47:24,780 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:47:24,780 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:47:24,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:47:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2019-11-28 16:47:24,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:47:24,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361701640] [2019-11-28 16:47:24,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:47:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:47:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:47:25,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:47:25,032 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:47:25,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:47:25 BoogieIcfgContainer [2019-11-28 16:47:25,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:47:25,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:47:25,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:47:25,087 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:47:25,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:24" (3/4) ... [2019-11-28 16:47:25,092 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:47:25,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:47:25,097 INFO L168 Benchmark]: Toolchain (without parser) took 1834.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -103.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:25,098 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:47:25,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:25,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.40 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 16:47:25,102 INFO L168 Benchmark]: Boogie Preprocessor took 47.60 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:25,104 INFO L168 Benchmark]: RCFGBuilder took 653.73 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: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:25,105 INFO L168 Benchmark]: TraceAbstraction took 640.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:25,105 INFO L168 Benchmark]: Witness Printer took 6.81 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 16:47:25,120 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 414.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.40 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 47.60 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 653.73 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: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 640.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.81 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 160]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 142, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 141. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] double x = 1.0 / 0.0; [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L156] double res = __ieee754_sqrt(x); [L134] __int32_t hx, lx; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L136] ieee_double_shape_type ew_u; [L137] ew_u.value = (x) [L138] EXPR ew_u.parts.msw [L138] (hx) = ew_u.parts.msw [L139] EXPR ew_u.parts.lsw [L139] (lx) = ew_u.parts.lsw [L141] hx &= 0x7fffffff [L142] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L143] hx = 0x7ff00000 - hx [L144] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L159] COND TRUE !isinf_double(res) [L160] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 16:47:27,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:47:27,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:47:27,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:47:27,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:47:27,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:47:27,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:47:27,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:47:27,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:47:27,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:47:27,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:47:27,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:47:27,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:47:27,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:47:27,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:47:27,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:47:27,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:47:27,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:47:27,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:47:27,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:47:27,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:47:27,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:47:27,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:47:27,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:47:27,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:47:27,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:47:27,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:47:27,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:47:27,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:47:27,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:47:27,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:47:27,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:47:27,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:47:27,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:47:27,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:47:27,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:47:27,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:47:27,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:47:27,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:47:27,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:47:27,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:47:27,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:47:27,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:47:27,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:47:27,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:47:27,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:47:27,310 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:47:27,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:47:27,311 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:47:27,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:47:27,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:47:27,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:47:27,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:47:27,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:47:27,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:47:27,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:47:27,313 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:47:27,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:47:27,313 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:47:27,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:47:27,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:47:27,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:47:27,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:47:27,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:47:27,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:47:27,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:47:27,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:47:27,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:47:27,317 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:47:27,317 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:47:27,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:47:27,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:47:27,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:47:27,318 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 -> 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 [2019-11-28 16:47:27,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:47:27,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:47:27,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:47:27,739 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:47:27,740 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:47:27,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-28 16:47:27,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6cb652e/bceec45ca54c4c6d9a1618653a8575e8/FLAG8eca4d646 [2019-11-28 16:47:28,320 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:47:28,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-28 16:47:28,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6cb652e/bceec45ca54c4c6d9a1618653a8575e8/FLAG8eca4d646 [2019-11-28 16:47:28,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6cb652e/bceec45ca54c4c6d9a1618653a8575e8 [2019-11-28 16:47:28,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:47:28,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:47:28,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:47:28,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:47:28,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:47:28,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:28" (1/1) ... [2019-11-28 16:47:28,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454e1e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:28, skipping insertion in model container [2019-11-28 16:47:28,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:28" (1/1) ... [2019-11-28 16:47:28,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:47:28,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:47:29,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:47:29,050 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:47:29,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:47:29,226 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:47:29,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29 WrapperNode [2019-11-28 16:47:29,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:47:29,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:47:29,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:47:29,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:47:29,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:47:29,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:47:29,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:47:29,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:47:29,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (1/1) ... [2019-11-28 16:47:29,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:47:29,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:47:29,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:47:29,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:47:29,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (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 16:47:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 16:47:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:47:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:47:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:47:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:47:29,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:47:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:47:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:47:33,150 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:47:33,151 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:47:33,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:33 BoogieIcfgContainer [2019-11-28 16:47:33,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:47:33,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:47:33,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:47:33,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:47:33,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:47:28" (1/3) ... [2019-11-28 16:47:33,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1750a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:33, skipping insertion in model container [2019-11-28 16:47:33,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:29" (2/3) ... [2019-11-28 16:47:33,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1750a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:33, skipping insertion in model container [2019-11-28 16:47:33,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:33" (3/3) ... [2019-11-28 16:47:33,166 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2019-11-28 16:47:33,177 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:47:33,186 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:47:33,196 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:47:33,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:47:33,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:47:33,218 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:47:33,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:47:33,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:47:33,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:47:33,218 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:47:33,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:47:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-28 16:47:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:47:33,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:47:33,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:47:33,242 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:47:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:47:33,247 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2019-11-28 16:47:33,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:47:33,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836851783] [2019-11-28 16:47:33,257 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 16:47:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:47:33,642 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:47:33,647 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:47:33,659 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 16:47:33,659 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:47:33,663 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 16:47:33,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836851783] [2019-11-28 16:47:33,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:47:33,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:47:33,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588577328] [2019-11-28 16:47:33,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:47:33,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:47:33,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:47:33,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:47:33,691 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-28 16:47:33,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:47:33,722 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2019-11-28 16:47:33,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:47:33,724 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:47:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:47:33,750 INFO L225 Difference]: With dead ends: 102 [2019-11-28 16:47:33,752 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 16:47:33,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:47:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 16:47:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-11-28 16:47:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-28 16:47:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2019-11-28 16:47:33,799 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2019-11-28 16:47:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:47:33,800 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2019-11-28 16:47:33,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:47:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2019-11-28 16:47:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:47:33,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:47:33,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:47:34,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:47:34,017 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:47:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:47:34,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2019-11-28 16:47:34,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:47:34,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16525885] [2019-11-28 16:47:34,019 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 16:47:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:47:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:47:35,049 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:47:35,049 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:47:35,251 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:47:35,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:47:35 BoogieIcfgContainer [2019-11-28 16:47:35,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:47:35,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:47:35,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:47:35,289 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:47:35,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:33" (3/4) ... [2019-11-28 16:47:35,293 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:47:35,350 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:47:35,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:47:35,353 INFO L168 Benchmark]: Toolchain (without parser) took 6636.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 959.0 MB in the beginning and 989.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:35,353 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:47:35,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -121.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:35,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:47:35,356 INFO L168 Benchmark]: Boogie Preprocessor took 72.79 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: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:35,356 INFO L168 Benchmark]: RCFGBuilder took 3796.63 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:35,357 INFO L168 Benchmark]: TraceAbstraction took 2133.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.3 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:35,358 INFO L168 Benchmark]: Witness Printer took 62.12 ms. Allocated memory is still 1.1 GB. Free memory was 996.3 MB in the beginning and 989.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:47:35,362 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 508.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -121.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.79 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: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3796.63 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2133.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.3 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * Witness Printer took 62.12 ms. Allocated memory is still 1.1 GB. Free memory was 996.3 MB in the beginning and 989.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 160]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] double x = 1.0 / 0.0; [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L156] double res = __ieee754_sqrt(x); [L134] __int32_t hx, lx; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L136] ieee_double_shape_type ew_u; [L137] ew_u.value = (x) [L138] EXPR ew_u.parts.msw [L138] (hx) = ew_u.parts.msw [L139] EXPR ew_u.parts.lsw [L139] (lx) = ew_u.parts.lsw [L141] hx &= 0x7fffffff [L142] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L143] hx = 0x7ff00000 - hx [L144] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L159] COND TRUE !isinf_double(res) [L160] __VERIFIER_error() VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...