./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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_1072d.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 dbff84b908ff01b4d2841315a486ca175d7dad80 .............................................................................................................................................................................................................................................................................................. 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_1072d.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 dbff84b908ff01b4d2841315a486ca175d7dad80 ............................................................................................................................................................................................................................................................................................................ 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 16:49:41,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:41,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:41,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:41,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:41,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:41,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:41,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:41,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:41,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:41,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:41,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:41,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:41,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:41,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:41,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:41,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:41,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:41,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:41,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:41,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:41,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:41,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:41,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:41,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:41,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:41,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:41,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:41,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:41,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:41,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:41,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:41,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:41,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:41,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:41,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:41,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:41,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:41,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:41,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:41,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:41,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:49:41,965 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:41,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:41,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:41,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:41,968 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:41,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:41,969 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:41,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:49:41,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:41,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:41,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:41,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:41,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:41,970 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:41,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:41,971 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:41,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:41,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:41,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:41,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:41,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:41,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:41,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:41,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:41,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:41,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:49:41,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:49:41,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:41,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:41,976 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 -> dbff84b908ff01b4d2841315a486ca175d7dad80 [2019-11-28 16:49:42,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:42,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:42,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:42,297 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:42,297 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:42,298 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-11-28 16:49:42,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258cd878b/293aea1663e7480a9c3209231b196787/FLAG2680ec870 [2019-11-28 16:49:42,872 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:42,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-11-28 16:49:42,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258cd878b/293aea1663e7480a9c3209231b196787/FLAG2680ec870 [2019-11-28 16:49:43,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258cd878b/293aea1663e7480a9c3209231b196787 [2019-11-28 16:49:43,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:43,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:43,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:43,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:43,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:43,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709ee9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43, skipping insertion in model container [2019-11-28 16:49:43,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:43,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:43,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:43,450 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:43,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:43,579 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:43,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43 WrapperNode [2019-11-28 16:49:43,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:43,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:43,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:43,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:43,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:43,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:43,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:43,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:43,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (1/1) ... [2019-11-28 16:49:43,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:43,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:43,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:43,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:43,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (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 16:49:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:49:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:49:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:49:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:49:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:44,213 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:44,213 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:49:44,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:44 BoogieIcfgContainer [2019-11-28 16:49:44,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:44,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:44,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:44,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:44,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:43" (1/3) ... [2019-11-28 16:49:44,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7cfba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:44, skipping insertion in model container [2019-11-28 16:49:44,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:43" (2/3) ... [2019-11-28 16:49:44,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7cfba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:44, skipping insertion in model container [2019-11-28 16:49:44,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:44" (3/3) ... [2019-11-28 16:49:44,223 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2019-11-28 16:49:44,232 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:44,239 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:44,249 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:44,274 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:44,275 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:44,275 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:44,275 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:44,275 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:44,276 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:44,276 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:44,276 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-28 16:49:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:49:44,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:44,296 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:44,296 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:44,302 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2019-11-28 16:49:44,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:44,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272459152] [2019-11-28 16:49:44,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:44,428 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 16:49:44,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272459152] [2019-11-28 16:49:44,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:44,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:49:44,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761637327] [2019-11-28 16:49:44,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:44,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:44,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:44,455 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-28 16:49:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:44,477 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2019-11-28 16:49:44,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:44,479 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-28 16:49:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:44,490 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:49:44,491 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 16:49:44,496 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 16:49:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 16:49:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 16:49:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 16:49:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-28 16:49:44,540 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-11-28 16:49:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:44,541 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 16:49:44,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-11-28 16:49:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:49:44,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:44,543 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:44,543 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2019-11-28 16:49:44,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:44,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032798734] [2019-11-28 16:49:44,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:44,858 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:49:44,859 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:44,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:44 BoogieIcfgContainer [2019-11-28 16:49:44,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:44,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:44,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:44,888 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:44,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:44" (3/4) ... [2019-11-28 16:49:44,892 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:49:44,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:44,895 INFO L168 Benchmark]: Toolchain (without parser) took 1699.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -124.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:44,896 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:44,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:44,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 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 16:49:44,899 INFO L168 Benchmark]: Boogie Preprocessor took 43.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:44,899 INFO L168 Benchmark]: RCFGBuilder took 524.92 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:44,900 INFO L168 Benchmark]: TraceAbstraction took 671.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:44,901 INFO L168 Benchmark]: Witness Printer took 4.74 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 16:49:44,906 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 382.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.46 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 43.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 524.92 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 671.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.74 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: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 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=27occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 16:49:47,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:47,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:47,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:47,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:47,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:47,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:47,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:47,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:47,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:47,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:47,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:47,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:47,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:47,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:47,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:47,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:47,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:47,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:47,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:47,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:47,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:47,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:47,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:47,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:47,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:47,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:47,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:47,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:47,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:47,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:47,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:47,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:47,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:47,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:47,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:47,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:47,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:47,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:47,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:47,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:47,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:49:47,129 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:47,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:47,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:47,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:47,131 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:47,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:47,131 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:47,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:47,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:47,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:47,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:47,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:47,132 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:49:47,132 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:49:47,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:47,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:47,133 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:47,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:47,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:47,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:47,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:47,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:47,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:47,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:47,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:47,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:47,135 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:49:47,136 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:49:47,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:47,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:47,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:49:47,136 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 -> dbff84b908ff01b4d2841315a486ca175d7dad80 [2019-11-28 16:49:47,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:47,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:47,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:47,450 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:47,451 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:47,451 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-11-28 16:49:47,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10435a4fa/9e4fea494f694b69b2a7164fb0bddaf8/FLAG5424c2223 [2019-11-28 16:49:47,977 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:47,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-11-28 16:49:47,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10435a4fa/9e4fea494f694b69b2a7164fb0bddaf8/FLAG5424c2223 [2019-11-28 16:49:48,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10435a4fa/9e4fea494f694b69b2a7164fb0bddaf8 [2019-11-28 16:49:48,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:48,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:48,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:48,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:48,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:48,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4ecbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48, skipping insertion in model container [2019-11-28 16:49:48,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:48,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:48,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:48,629 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:48,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:48,764 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:48,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48 WrapperNode [2019-11-28 16:49:48,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:48,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:48,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:48,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:48,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:48,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:48,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:48,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:48,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (1/1) ... [2019-11-28 16:49:48,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:48,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:48,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:48,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:48,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (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 16:49:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 16:49:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:49:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:49:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:49:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:49,461 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:49,462 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:49:49,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:49 BoogieIcfgContainer [2019-11-28 16:49:49,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:49,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:49,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:49,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:49,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:48" (1/3) ... [2019-11-28 16:49:49,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c10578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:49, skipping insertion in model container [2019-11-28 16:49:49,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:48" (2/3) ... [2019-11-28 16:49:49,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c10578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:49, skipping insertion in model container [2019-11-28 16:49:49,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:49" (3/3) ... [2019-11-28 16:49:49,473 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2019-11-28 16:49:49,483 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:49,491 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:49,504 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:49,524 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:49,525 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:49,525 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:49,525 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:49,525 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:49,525 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:49,525 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:49,526 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-28 16:49:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:49:49,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:49,547 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:49,547 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2019-11-28 16:49:49,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:49:49,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503962269] [2019-11-28 16:49:49,564 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 16:49:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:49,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:49:49,732 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:49:49,744 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 16:49:49,744 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:49:49,749 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 16:49:49,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503962269] [2019-11-28 16:49:49,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:49,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:49:49,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863686561] [2019-11-28 16:49:49,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:49,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:49:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:49,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:49,771 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-28 16:49:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:49,788 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2019-11-28 16:49:49,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:49,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-28 16:49:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:49,801 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:49:49,801 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 16:49:49,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 16:49:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 16:49:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 16:49:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 16:49:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-28 16:49:49,842 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-11-28 16:49:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:49,842 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 16:49:49,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-11-28 16:49:49,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:49:49,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:49,844 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:50,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:49:50,063 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2019-11-28 16:49:50,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:49:50,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591572707] [2019-11-28 16:49:50,066 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 16:49:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:50,489 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:49:50,489 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:50,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:49:50,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:50 BoogieIcfgContainer [2019-11-28 16:49:50,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:50,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:50,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:50,730 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:50,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:49" (3/4) ... [2019-11-28 16:49:50,733 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:49:50,799 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:49:50,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:50,802 INFO L168 Benchmark]: Toolchain (without parser) took 2449.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -109.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:50,803 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:50,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:50,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.47 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 16:49:50,805 INFO L168 Benchmark]: Boogie Preprocessor took 40.42 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 16:49:50,805 INFO L168 Benchmark]: RCFGBuilder took 605.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:50,806 INFO L168 Benchmark]: TraceAbstraction took 1263.78 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:50,807 INFO L168 Benchmark]: Witness Printer took 71.06 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 16:49:50,810 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 411.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.47 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 40.42 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 605.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1263.78 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 71.06 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: - CounterExampleResult [Line: 89]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] double x = -1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 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...