./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc 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_1131b.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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ...................................................................................................................................................................................................................................................................................................................... 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_1131b.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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d .................................................................................................................................................................................................................................................................................................................................. 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-a4ecdab [2020-10-24 23:16:53,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:53,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:53,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:53,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:53,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:53,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:53,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:53,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:53,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:53,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:53,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:53,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:53,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:53,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:53,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:53,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:53,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:53,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:53,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:53,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:53,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:53,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:53,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:53,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:53,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:53,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:53,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:53,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:53,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:53,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:53,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:53,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:53,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:53,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:53,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:53,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:53,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:53,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:53,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:53,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:53,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:53,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:53,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:53,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:53,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:53,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:53,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:53,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:53,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:53,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:53,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:53,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:53,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:53,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:53,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:53,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:53,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:53,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:53,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:53,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:53,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:53,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:53,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:53,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:53,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:53,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:53,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:53,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:53,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:53,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:53,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-10-24 23:16:53,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:53,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:53,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:53,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:53,769 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:53,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-24 23:16:53,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789b1ee1d/145f0c1621f7483c9f8a1ae730b47334/FLAGd59d214e2 [2020-10-24 23:16:54,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:54,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-24 23:16:54,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789b1ee1d/145f0c1621f7483c9f8a1ae730b47334/FLAGd59d214e2 [2020-10-24 23:16:54,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789b1ee1d/145f0c1621f7483c9f8a1ae730b47334 [2020-10-24 23:16:54,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:54,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:54,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:54,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:54,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:54,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:54" (1/1) ... [2020-10-24 23:16:54,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@808aa63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:54, skipping insertion in model container [2020-10-24 23:16:54,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:54" (1/1) ... [2020-10-24 23:16:54,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:54,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:55,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:55,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:55,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:55,228 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:55,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55 WrapperNode [2020-10-24 23:16:55,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:55,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:55,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:55,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:55,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:55,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:55,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:55,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:55,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (1/1) ... [2020-10-24 23:16:55,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:55,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:55,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:55,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:55,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (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 [2020-10-24 23:16:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-24 23:16:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:56,187 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:56,188 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:16:56,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:56 BoogieIcfgContainer [2020-10-24 23:16:56,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:56,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:56,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:56,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:56,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:54" (1/3) ... [2020-10-24 23:16:56,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1412858e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:56, skipping insertion in model container [2020-10-24 23:16:56,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:55" (2/3) ... [2020-10-24 23:16:56,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1412858e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:56, skipping insertion in model container [2020-10-24 23:16:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:56" (3/3) ... [2020-10-24 23:16:56,199 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-10-24 23:16:56,211 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:56,217 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:56,231 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:56,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:56,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:56,259 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:56,259 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:56,259 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:56,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:56,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:56,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-24 23:16:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:16:56,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:56,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:56,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-24 23:16:56,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:56,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912340152] [2020-10-24 23:16:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:56,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912340152] [2020-10-24 23:16:56,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:56,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:56,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408633132] [2020-10-24 23:16:56,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:56,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:56,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:56,484 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-24 23:16:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:56,510 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-24 23:16:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:56,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:16:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:56,522 INFO L225 Difference]: With dead ends: 119 [2020-10-24 23:16:56,523 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 23:16:56,526 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 [2020-10-24 23:16:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 23:16:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-24 23:16:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-24 23:16:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-24 23:16:56,567 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-24 23:16:56,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:56,568 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-24 23:16:56,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-24 23:16:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:16:56,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:56,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:56,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:56,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-24 23:16:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:56,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352330950] [2020-10-24 23:16:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:56,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:56,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:56,929 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:56,929 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:56,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:56,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:56 BoogieIcfgContainer [2020-10-24 23:16:56,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:56,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:56,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:56,999 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:57,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:56" (3/4) ... [2020-10-24 23:16:57,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:57,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:57,006 INFO L168 Benchmark]: Toolchain (without parser) took 2161.14 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 22.7 MB in the beginning and 50.3 MB in the end (delta: -27.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:57,007 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 29.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:57,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.60 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.1 MB in the beginning and 39.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:57,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.13 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 37.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:57,010 INFO L168 Benchmark]: Boogie Preprocessor took 53.47 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 34.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:57,011 INFO L168 Benchmark]: RCFGBuilder took 836.37 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:57,012 INFO L168 Benchmark]: TraceAbstraction took 806.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.5 MB in the beginning and 50.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:57,013 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 50.3 MB in the end (delta: 433.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:57,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 29.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.60 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.1 MB in the beginning and 39.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.13 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 37.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.47 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 34.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 836.37 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 33.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 806.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.5 MB in the beginning and 50.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 50.3 MB in the end (delta: 433.5 kB). 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 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=61occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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-a4ecdab [2020-10-24 23:16:59,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:59,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:59,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:59,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:59,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:59,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:59,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:59,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:59,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:59,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:59,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:59,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:59,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:59,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:59,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:59,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:59,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:59,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:59,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:59,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:59,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:59,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:59,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:59,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:59,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:59,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:59,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:59,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:59,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:59,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:59,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:59,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:59,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:59,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:59,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:59,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:59,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:59,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:59,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:59,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:59,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:59,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:59,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:59,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:59,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:59,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:59,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:59,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:59,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:59,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:59,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:59,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:59,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:59,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:59,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:59,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:59,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:59,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:59,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:59,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:59,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:59,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:59,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:59,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:59,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:59,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:59,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:59,778 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:59,778 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:59,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:59,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:59,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:59,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-10-24 23:17:00,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:00,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:00,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:00,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:00,258 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:00,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-24 23:17:00,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8298ec4/c7648d77677743929af0104806e56df2/FLAG45a4de4d1 [2020-10-24 23:17:01,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:01,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-10-24 23:17:01,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8298ec4/c7648d77677743929af0104806e56df2/FLAG45a4de4d1 [2020-10-24 23:17:01,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8298ec4/c7648d77677743929af0104806e56df2 [2020-10-24 23:17:01,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:01,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:01,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:01,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:01,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:01,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e02ff0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01, skipping insertion in model container [2020-10-24 23:17:01,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:01,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:01,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:01,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:01,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:01,875 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:01,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01 WrapperNode [2020-10-24 23:17:01,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:01,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:01,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:01,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:01,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:01,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:01,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:01,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:01,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:01,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:02,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (1/1) ... [2020-10-24 23:17:02,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:02,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:02,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:02,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:02,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (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 [2020-10-24 23:17:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:17:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:17:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:17:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-24 23:17:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:17:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:17:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:06,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:06,393 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:17:06,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:06 BoogieIcfgContainer [2020-10-24 23:17:06,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:06,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:06,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:06,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:06,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:01" (1/3) ... [2020-10-24 23:17:06,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9360c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:06, skipping insertion in model container [2020-10-24 23:17:06,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:01" (2/3) ... [2020-10-24 23:17:06,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9360c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:06, skipping insertion in model container [2020-10-24 23:17:06,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:06" (3/3) ... [2020-10-24 23:17:06,405 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-10-24 23:17:06,419 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:06,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:06,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:06,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:06,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:06,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:06,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:06,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:06,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:06,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:06,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-24 23:17:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:17:06,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:06,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:06,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:06,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-24 23:17:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:06,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347621008] [2020-10-24 23:17:06,514 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 [2020-10-24 23:17:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:07,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:17:07,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:07,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:07,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347621008] [2020-10-24 23:17:07,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:07,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:17:07,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47487017] [2020-10-24 23:17:07,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:07,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:07,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:07,644 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-24 23:17:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:07,674 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-24 23:17:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:07,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:17:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:07,689 INFO L225 Difference]: With dead ends: 119 [2020-10-24 23:17:07,690 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 23:17:07,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 23:17:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-24 23:17:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-24 23:17:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-24 23:17:07,742 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-24 23:17:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:07,743 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-24 23:17:07,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-24 23:17:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:17:07,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:07,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:07,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:17:07,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:07,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:07,962 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-24 23:17:07,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:07,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583963876] [2020-10-24 23:17:07,965 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 [2020-10-24 23:17:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:09,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:11,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:11,231 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:17:11,231 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:11,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:17:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:11 BoogieIcfgContainer [2020-10-24 23:17:11,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:11,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:11,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:11,503 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:11,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:06" (3/4) ... [2020-10-24 23:17:11,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:17:11,585 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:17:11,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:11,588 INFO L168 Benchmark]: Toolchain (without parser) took 10194.24 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 19.1 MB in the beginning and 40.5 MB in the end (delta: -21.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,589 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 29.1 MB in the beginning and 29.1 MB in the end (delta: 24.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:11,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.29 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.5 MB in the beginning and 33.4 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.70 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 31.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,591 INFO L168 Benchmark]: Boogie Preprocessor took 57.04 ms. Allocated memory is still 50.3 MB. Free memory was 30.9 MB in the beginning and 28.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,592 INFO L168 Benchmark]: RCFGBuilder took 4383.81 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 30.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,593 INFO L168 Benchmark]: TraceAbstraction took 5101.87 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.9 MB in the beginning and 24.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,594 INFO L168 Benchmark]: Witness Printer took 86.02 ms. Allocated memory is still 60.8 MB. Free memory was 24.0 MB in the beginning and 40.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:11,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 29.1 MB in the beginning and 29.1 MB in the end (delta: 24.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.29 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.5 MB in the beginning and 33.4 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.70 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 31.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.04 ms. Allocated memory is still 50.3 MB. Free memory was 30.9 MB in the beginning and 28.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4383.81 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 30.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5101.87 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.9 MB in the beginning and 24.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 86.02 ms. Allocated memory is still 60.8 MB. Free memory was 24.0 MB in the beginning and 40.5 MB in the end (delta: -16.5 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: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...