./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_1231b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c714d208cb0b1f96f572e8a6108248eb76c73a94 ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c714d208cb0b1f96f572e8a6108248eb76c73a94 ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:49:56,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:56,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:56,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:56,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:56,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:56,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:56,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:56,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:56,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:56,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:56,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:56,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:56,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:56,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:56,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:56,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:56,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:56,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:56,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:56,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:56,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:56,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:56,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:56,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:56,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:56,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:56,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:57,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:57,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:57,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:57,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:57,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:57,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:57,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:57,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:57,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:57,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:57,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:57,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:57,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:57,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:49:57,029 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:57,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:57,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:57,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:57,034 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:57,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:57,034 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:57,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:49:57,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:57,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:57,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:57,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:57,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:57,035 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:57,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:57,036 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:57,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:57,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:57,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:57,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:57,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:57,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:57,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:57,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:57,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:57,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:49:57,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:49:57,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:57,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:57,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2019-11-28 16:49:57,360 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:57,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:57,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:57,380 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:57,381 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:57,381 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-28 16:49:57,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0cb4260/d56577bdc3c945c2ab62a066d2cdadc5/FLAG28b01113e [2019-11-28 16:49:57,967 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:57,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-28 16:49:57,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0cb4260/d56577bdc3c945c2ab62a066d2cdadc5/FLAG28b01113e [2019-11-28 16:49:58,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0cb4260/d56577bdc3c945c2ab62a066d2cdadc5 [2019-11-28 16:49:58,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:58,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:58,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:58,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:58,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:58,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb63f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58, skipping insertion in model container [2019-11-28 16:49:58,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:58,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:58,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:58,574 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:58,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:58,695 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:58,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58 WrapperNode [2019-11-28 16:49:58,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:58,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:58,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:58,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:58,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:58,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:58,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:58,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:58,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:58,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:58,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:58,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:58,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:49:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:49:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:59,287 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:59,287 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:49:59,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:59 BoogieIcfgContainer [2019-11-28 16:49:59,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:59,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:59,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:59,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:59,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:58" (1/3) ... [2019-11-28 16:49:59,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383dd1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:59, skipping insertion in model container [2019-11-28 16:49:59,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (2/3) ... [2019-11-28 16:49:59,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383dd1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:59, skipping insertion in model container [2019-11-28 16:49:59,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:59" (3/3) ... [2019-11-28 16:49:59,298 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2019-11-28 16:49:59,311 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:59,318 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:59,337 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:59,368 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:59,368 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:59,368 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:59,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:59,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:59,369 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:59,369 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:59,369 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 16:49:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:49:59,393 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:59,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:59,394 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:59,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:59,400 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-28 16:49:59,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:59,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617043753] [2019-11-28 16:49:59,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:59,538 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 16:49:59,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617043753] [2019-11-28 16:49:59,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:59,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:49:59,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456010603] [2019-11-28 16:49:59,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:59,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:59,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:59,561 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-28 16:49:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:59,582 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-28 16:49:59,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:59,584 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 16:49:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:59,595 INFO L225 Difference]: With dead ends: 56 [2019-11-28 16:49:59,595 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 16:49:59,598 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 16:49:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 16:49:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 16:49:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 16:49:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-28 16:49:59,640 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-28 16:49:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:59,641 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-28 16:49:59,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-28 16:49:59,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:49:59,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:59,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:59,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:59,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-28 16:49:59,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:59,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878829287] [2019-11-28 16:49:59,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:59,768 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 16:49:59,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878829287] [2019-11-28 16:49:59,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:59,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:49:59,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597440254] [2019-11-28 16:49:59,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:49:59,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:59,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:49:59,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:49:59,775 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-11-28 16:49:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:59,847 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-28 16:49:59,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:49:59,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-28 16:49:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:59,849 INFO L225 Difference]: With dead ends: 40 [2019-11-28 16:49:59,849 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 16:49:59,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:49:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 16:49:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-28 16:49:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:49:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-28 16:49:59,858 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-28 16:49:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:59,858 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-28 16:49:59,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:49:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-28 16:49:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:49:59,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:59,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:59,860 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2019-11-28 16:49:59,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:59,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290568163] [2019-11-28 16:49:59,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:59,954 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 16:49:59,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290568163] [2019-11-28 16:49:59,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:59,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:49:59,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297376698] [2019-11-28 16:49:59,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:49:59,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:59,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:49:59,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:49:59,957 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2019-11-28 16:50:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:00,018 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-11-28 16:50:00,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:50:00,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-28 16:50:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:00,020 INFO L225 Difference]: With dead ends: 42 [2019-11-28 16:50:00,020 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 16:50:00,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:50:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 16:50:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-11-28 16:50:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:50:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-28 16:50:00,026 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2019-11-28 16:50:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:00,027 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-28 16:50:00,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:50:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-28 16:50:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:50:00,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:00,028 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:00,028 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-28 16:50:00,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:50:00,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705931687] [2019-11-28 16:50:00,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:50:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:00,111 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:50:00,111 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:50:00,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:00 BoogieIcfgContainer [2019-11-28 16:50:00,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:00,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:00,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:00,141 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:00,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:59" (3/4) ... [2019-11-28 16:50:00,144 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:50:00,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:00,147 INFO L168 Benchmark]: Toolchain (without parser) took 1849.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -52.4 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:00,148 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:00,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:00,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.63 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 16:50:00,150 INFO L168 Benchmark]: Boogie Preprocessor took 29.80 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 16:50:00,150 INFO L168 Benchmark]: RCFGBuilder took 513.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:00,151 INFO L168 Benchmark]: TraceAbstraction took 850.29 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: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:00,152 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:00,156 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 397.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.63 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 29.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 513.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 850.29 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: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L16] return x != x; [L62] COND TRUE !isnan_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 20 SDslu, 112 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:50:02,178 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 16:50:02,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:50:02,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:50:02,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:50:02,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:50:02,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:50:02,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:50:02,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:50:02,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:50:02,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:50:02,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:50:02,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:50:02,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:50:02,285 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:50:02,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:50:02,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:50:02,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:50:02,287 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:50:02,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:50:02,288 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:50:02,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:50:02,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:50:02,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:50:02,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:50:02,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:50:02,291 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:50:02,291 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:50:02,291 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:50:02,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:50:02,292 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:50:02,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:50:02,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:50:02,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:50:02,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:50:02,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:50:02,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:02,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:50:02,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:50:02,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:50:02,295 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:50:02,296 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:50:02,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:50:02,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:50:02,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:50:02,297 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2019-11-28 16:50:02,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:50:02,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:50:02,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:50:02,639 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:50:02,641 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:50:02,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-28 16:50:02,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77289148d/7f6a24649a714e5c9a32148c13389a3a/FLAGdf25c0e7c [2019-11-28 16:50:03,198 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:50:03,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-28 16:50:03,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77289148d/7f6a24649a714e5c9a32148c13389a3a/FLAGdf25c0e7c [2019-11-28 16:50:03,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77289148d/7f6a24649a714e5c9a32148c13389a3a [2019-11-28 16:50:03,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:50:03,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:50:03,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:03,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:50:03,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:50:03,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2fc8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03, skipping insertion in model container [2019-11-28 16:50:03,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:50:03,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:50:03,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:03,879 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:50:03,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:03,992 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:50:03,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03 WrapperNode [2019-11-28 16:50:03,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:03,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:03,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:50:03,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:50:04,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:04,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:50:04,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:50:04,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:50:04,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:04,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:50:04,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:50:04,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:50:04,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:50:04,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:50:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:50:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:50:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:50:04,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:50:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:04,615 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:04,616 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:50:04,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:04 BoogieIcfgContainer [2019-11-28 16:50:04,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:04,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:04,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:04,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:04,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:03" (1/3) ... [2019-11-28 16:50:04,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7539b1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:04, skipping insertion in model container [2019-11-28 16:50:04,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (2/3) ... [2019-11-28 16:50:04,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7539b1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:04, skipping insertion in model container [2019-11-28 16:50:04,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:04" (3/3) ... [2019-11-28 16:50:04,627 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2019-11-28 16:50:04,636 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:04,643 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:04,654 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:04,677 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:04,677 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:04,677 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:04,677 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:04,678 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:04,678 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:04,678 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:04,678 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 16:50:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:50:04,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:04,701 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:04,702 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-28 16:50:04,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:04,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80518040] [2019-11-28 16:50:04,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 16:50:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:04,812 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:50:04,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:04,838 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:04,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80518040] [2019-11-28 16:50:04,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:04,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:50:04,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027293662] [2019-11-28 16:50:04,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:04,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:04,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:04,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:04,867 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-28 16:50:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:04,889 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-28 16:50:04,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:04,890 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-28 16:50:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:04,902 INFO L225 Difference]: With dead ends: 56 [2019-11-28 16:50:04,902 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 16:50:04,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 16:50:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 16:50:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 16:50:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-28 16:50:04,944 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-28 16:50:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:04,944 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-28 16:50:04,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-28 16:50:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:50:04,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:04,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:05,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,160 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:05,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-28 16:50:05,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:05,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898179610] [2019-11-28 16:50:05,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:05,301 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:50:05,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:05,343 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:05,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898179610] [2019-11-28 16:50:05,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:05,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:50:05,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140383487] [2019-11-28 16:50:05,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:50:05,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:50:05,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:50:05,370 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-11-28 16:50:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:05,479 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2019-11-28 16:50:05,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:05,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 16:50:05,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:05,481 INFO L225 Difference]: With dead ends: 50 [2019-11-28 16:50:05,481 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 16:50:05,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:50:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 16:50:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-11-28 16:50:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 16:50:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-28 16:50:05,490 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-28 16:50:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:05,491 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-28 16:50:05,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:50:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-28 16:50:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:50:05,492 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:05,492 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:05,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,713 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-28 16:50:05,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:05,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365755386] [2019-11-28 16:50:05,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:05,959 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:50:05,959 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:50:06,160 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:50:06,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:06 BoogieIcfgContainer [2019-11-28 16:50:06,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:06,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:06,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:06,194 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:06,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:04" (3/4) ... [2019-11-28 16:50:06,197 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:50:06,267 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:50:06,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:06,270 INFO L168 Benchmark]: Toolchain (without parser) took 2641.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 955.0 MB in the beginning and 991.7 MB in the end (delta: -36.8 MB). Peak memory consumption was 62.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:06,271 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:06,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -140.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:06,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:06,274 INFO L168 Benchmark]: Boogie Preprocessor took 34.36 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 16:50:06,275 INFO L168 Benchmark]: RCFGBuilder took 540.28 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:06,275 INFO L168 Benchmark]: TraceAbstraction took 1574.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 991.7 MB in the end (delta: 69.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:06,276 INFO L168 Benchmark]: Witness Printer took 74.21 ms. Allocated memory is still 1.1 GB. Free memory is still 991.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:06,280 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 363.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -140.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 540.28 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1574.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 991.7 MB in the end (delta: 69.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 11.5 GB. * Witness Printer took 74.21 ms. Allocated memory is still 1.1 GB. Free memory is still 991.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 68]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L16] return x != x; [L62] COND TRUE !isnan_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 64 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 574 SizeOfPredicates, 1 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...