./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1121a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ef2080ffd97f82ac51854e7d9813eba864fd0a .............................................................................................................................................................................................................................................................................................................. 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 -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1121a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ef2080ffd97f82ac51854e7d9813eba864fd0a ................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-5485861 [2020-10-25 21:53:27,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:27,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:27,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:27,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:27,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:27,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:27,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:27,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:27,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:27,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:27,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:27,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:27,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:27,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:27,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:27,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:27,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:27,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:27,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:27,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:27,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:27,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:27,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:27,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:27,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:27,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:27,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:27,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:27,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:27,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:27,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:27,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:27,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:27,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:27,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:27,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:27,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:27,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:27,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:27,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:27,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:53:27,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:27,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:27,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:27,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:27,975 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:27,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:27,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:27,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:53:27,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:27,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:27,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:27,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:27,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:27,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:27,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:27,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:27,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:27,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:27,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:27,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:27,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:27,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:27,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:27,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:27,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:27,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:53:27,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:53:27,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:27,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:27,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-10-25 21:53:28,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:28,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:28,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:28,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:28,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:28,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-25 21:53:28,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486d857d7/b5d712bfc56049c186c211c6b5d7dff6/FLAGba2cb03da [2020-10-25 21:53:29,135 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:29,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-25 21:53:29,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486d857d7/b5d712bfc56049c186c211c6b5d7dff6/FLAGba2cb03da [2020-10-25 21:53:29,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486d857d7/b5d712bfc56049c186c211c6b5d7dff6 [2020-10-25 21:53:29,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:29,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:29,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:29,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:29,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:29,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:29,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607af64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29, skipping insertion in model container [2020-10-25 21:53:29,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:29,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:29,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:29,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:29,898 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:29,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:29,968 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:29,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29 WrapperNode [2020-10-25 21:53:29,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:29,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:29,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:29,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:29,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:30,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:30,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:30,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:30,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... [2020-10-25 21:53:30,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:30,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:30,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:30,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:30,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:53:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:53:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:53:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:53:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:53:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-25 21:53:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:30,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:30,791 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-25 21:53:30,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:30 BoogieIcfgContainer [2020-10-25 21:53:30,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:30,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:30,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:30,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:30,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:29" (1/3) ... [2020-10-25 21:53:30,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4efa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:30, skipping insertion in model container [2020-10-25 21:53:30,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:29" (2/3) ... [2020-10-25 21:53:30,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4efa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:30, skipping insertion in model container [2020-10-25 21:53:30,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:30" (3/3) ... [2020-10-25 21:53:30,803 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-10-25 21:53:30,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:30,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:30,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:30,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:30,862 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:30,862 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:30,862 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:30,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:30,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:30,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:30,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:30,878 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-25 21:53:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 21:53:30,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:30,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:30,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:30,891 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-25 21:53:30,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:30,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741427114] [2020-10-25 21:53:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:31,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741427114] [2020-10-25 21:53:31,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:31,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:53:31,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727780253] [2020-10-25 21:53:31,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:31,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:31,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:31,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:31,065 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-25 21:53:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:31,090 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-25 21:53:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:31,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 21:53:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:31,102 INFO L225 Difference]: With dead ends: 109 [2020-10-25 21:53:31,102 INFO L226 Difference]: Without dead ends: 52 [2020-10-25 21:53:31,105 INFO L677 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 [2020-10-25 21:53:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-25 21:53:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-25 21:53:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-25 21:53:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-25 21:53:31,144 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-25 21:53:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:31,145 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-25 21:53:31,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-25 21:53:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 21:53:31,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:31,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:31,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:53:31,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:31,148 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-25 21:53:31,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:31,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873109904] [2020-10-25 21:53:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:31,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:31,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:31,369 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:53:31,369 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:31,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:53:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:31 BoogieIcfgContainer [2020-10-25 21:53:31,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:31,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:31,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:31,428 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:31,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:30" (3/4) ... [2020-10-25 21:53:31,433 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:53:31,433 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:31,436 INFO L168 Benchmark]: Toolchain (without parser) took 1978.73 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 40.0 MB in the beginning and 44.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:31,437 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:31,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.03 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 26.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:31,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.62 ms. Allocated memory is still 56.6 MB. Free memory was 26.3 MB in the beginning and 39.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:31,440 INFO L168 Benchmark]: Boogie Preprocessor took 42.84 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:31,442 INFO L168 Benchmark]: RCFGBuilder took 702.34 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 37.2 MB in the beginning and 51.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:31,443 INFO L168 Benchmark]: TraceAbstraction took 631.60 ms. Allocated memory is still 71.3 MB. Free memory was 51.5 MB in the beginning and 44.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:31,443 INFO L168 Benchmark]: Witness Printer took 6.21 ms. Allocated memory is still 71.3 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:31,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 504.03 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 26.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.62 ms. Allocated memory is still 56.6 MB. Free memory was 26.3 MB in the beginning and 39.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.84 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 702.34 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 37.2 MB in the beginning and 51.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 631.60 ms. Allocated memory is still 71.3 MB. Free memory was 51.5 MB in the beginning and 44.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.21 ms. Allocated memory is still 71.3 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 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=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-5485861 [2020-10-25 21:53:33,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:33,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:33,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:33,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:33,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:33,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:33,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:33,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:33,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:33,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:33,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:33,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:33,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:33,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:33,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:33,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:33,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:33,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:33,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:33,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:33,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:33,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:33,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:33,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:33,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:33,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:33,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:33,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:33,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:33,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:33,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:33,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:33,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:33,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:33,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:33,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:33,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:33,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:33,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:33,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:33,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:53:34,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:34,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:34,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:34,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:34,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:34,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:34,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:34,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:34,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:34,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:34,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:34,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:34,019 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:53:34,020 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:53:34,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:34,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:34,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:34,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:34,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:34,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:34,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:34,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:34,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:34,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:34,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:34,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:34,023 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:53:34,023 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:53:34,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:34,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:34,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:53:34,024 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-10-25 21:53:34,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:34,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:34,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:34,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:34,441 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:34,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-25 21:53:34,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406c5c1d0/28a47062a11947e18c8d36b14bd98c43/FLAG0de7c640a [2020-10-25 21:53:35,096 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:35,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-25 21:53:35,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406c5c1d0/28a47062a11947e18c8d36b14bd98c43/FLAG0de7c640a [2020-10-25 21:53:35,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406c5c1d0/28a47062a11947e18c8d36b14bd98c43 [2020-10-25 21:53:35,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:35,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:35,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:35,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:35,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:35,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac2445f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35, skipping insertion in model container [2020-10-25 21:53:35,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:35,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:35,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:35,765 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:35,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:35,844 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:35,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35 WrapperNode [2020-10-25 21:53:35,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:35,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:35,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:35,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:35,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:35,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:35,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:35,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:35,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (1/1) ... [2020-10-25 21:53:35,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:35,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:35,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:35,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:35,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (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 [2020-10-25 21:53:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:53:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:53:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:53:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-25 21:53:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:53:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:53:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:39,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:39,768 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-25 21:53:39,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:39 BoogieIcfgContainer [2020-10-25 21:53:39,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:39,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:39,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:39,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:39,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:35" (1/3) ... [2020-10-25 21:53:39,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331d3257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:39, skipping insertion in model container [2020-10-25 21:53:39,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:35" (2/3) ... [2020-10-25 21:53:39,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331d3257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:39, skipping insertion in model container [2020-10-25 21:53:39,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:39" (3/3) ... [2020-10-25 21:53:39,780 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-10-25 21:53:39,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:39,798 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:39,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:39,837 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:39,838 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:39,838 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:39,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:39,838 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:39,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:39,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:39,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-25 21:53:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 21:53:39,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:39,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:39,862 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-25 21:53:39,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:39,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154145362] [2020-10-25 21:53:39,884 INFO L95 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 [2020-10-25 21:53:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:40,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:53:40,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:41,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:41,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154145362] [2020-10-25 21:53:41,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:41,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:53:41,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879770632] [2020-10-25 21:53:41,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:41,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:41,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:41,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:41,049 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-25 21:53:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:41,088 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-25 21:53:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:41,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 21:53:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:41,103 INFO L225 Difference]: With dead ends: 109 [2020-10-25 21:53:41,103 INFO L226 Difference]: Without dead ends: 52 [2020-10-25 21:53:41,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-25 21:53:41,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-25 21:53:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-25 21:53:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-25 21:53:41,154 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-25 21:53:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:41,155 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-25 21:53:41,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-25 21:53:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 21:53:41,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:41,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:41,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:53:41,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:41,373 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-25 21:53:41,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:41,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090276068] [2020-10-25 21:53:41,374 INFO L95 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 [2020-10-25 21:53:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:42,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 21:53:42,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:51,560 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 8 [2020-10-25 21:54:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:54:03,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:54:17,751 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-10-25 21:54:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:54:19,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090276068] [2020-10-25 21:54:19,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:54:19,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-25 21:54:19,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105926267] [2020-10-25 21:54:19,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 21:54:19,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:54:19,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 21:54:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=4, NotChecked=16, Total=110 [2020-10-25 21:54:19,853 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-10-25 21:54:24,751 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (_ +zero 11 53))) is different from true [2020-10-25 21:54:28,694 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) |c_ULTIMATE.start_isnan_double_#res|) (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (_ +zero 11 53)))) (fp.div roundNearestTiesToEven .cse0 .cse0))))) is different from false [2020-10-25 21:54:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:54:37,430 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-10-25 21:54:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 21:54:37,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-25 21:54:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:54:37,479 INFO L225 Difference]: With dead ends: 57 [2020-10-25 21:54:37,479 INFO L226 Difference]: Without dead ends: 52 [2020-10-25 21:54:37,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=27, Invalid=69, Unknown=6, NotChecked=54, Total=156 [2020-10-25 21:54:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-25 21:54:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-25 21:54:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-25 21:54:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-10-25 21:54:37,488 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-10-25 21:54:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:54:37,489 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-10-25 21:54:37,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 21:54:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-10-25 21:54:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 21:54:37,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:54:37,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:54:37,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:54:37,694 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:54:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:54:37,695 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-10-25 21:54:37,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:54:37,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370610525] [2020-10-25 21:54:37,698 INFO L95 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 [2020-10-25 21:54:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:54:37,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:54:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:54:38,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:54:38,105 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:54:38,105 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:54:38,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 21:54:38,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:54:38 BoogieIcfgContainer [2020-10-25 21:54:38,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:54:38,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:54:38,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:54:38,364 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:54:38,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:39" (3/4) ... [2020-10-25 21:54:38,367 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:54:38,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:54:38,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:54:38,468 INFO L168 Benchmark]: Toolchain (without parser) took 63010.78 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.8 MB in the beginning and 27.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,468 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 48.2 MB. Free memory is still 29.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:54:38,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.33 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 21.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.60 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 40.9 MB in the end (delta: -19.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,471 INFO L168 Benchmark]: Boogie Preprocessor took 52.79 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 38.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,471 INFO L168 Benchmark]: RCFGBuilder took 3791.27 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 35.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,472 INFO L168 Benchmark]: TraceAbstraction took 58590.78 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 30.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,473 INFO L168 Benchmark]: Witness Printer took 102.72 ms. Allocated memory is still 58.7 MB. Free memory was 30.3 MB in the beginning and 27.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:54:38,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 48.2 MB. Free memory is still 29.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.33 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 21.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.60 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 40.9 MB in the end (delta: -19.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.79 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 38.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3791.27 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 35.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 58590.78 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 30.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 102.72 ms. Allocated memory is still 58.7 MB. Free memory was 30.3 MB in the beginning and 27.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 2 SDslu, 400 SDs, 0 SdLazy, 25 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 37.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2549 SizeOfPredicates, 11 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 12 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...