./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/floats-esbmc-regression/Double_div_bad.i -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 91279e250c876c25b5b998426afc8f34c58f709c ...................................................................................................................................................................................................................................... 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/floats-esbmc-regression/Double_div_bad.i -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 91279e250c876c25b5b998426afc8f34c58f709c ................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:09:19,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:09:19,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:09:19,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:09:19,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:09:19,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:09:19,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:09:19,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:09:19,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:09:19,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:09:19,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:09:19,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:09:19,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:09:19,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:09:19,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:09:19,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:09:19,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:09:19,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:09:19,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:09:19,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:09:19,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:09:19,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:09:19,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:09:19,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:09:19,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:09:19,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:09:19,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:09:19,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:09:19,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:09:19,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:09:19,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:09:19,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:09:19,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:09:19,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:09:19,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:09:19,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:09:19,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:09:19,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:09:19,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:09:19,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:09:19,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:09:19,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:09:19,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:09:19,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:09:19,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:09:19,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:09:19,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:09:19,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:09:19,467 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:09:19,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:09:19,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:09:19,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:09:19,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:09:19,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:09:19,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:09:19,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:09:19,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:09:19,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:09:19,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:09:19,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:09:19,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:09:19,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:09:19,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:09:19,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:09:19,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:09:19,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:09:19,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:09:19,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:09:19,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:09:19,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:09:19,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:09:19,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:09:19,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91279e250c876c25b5b998426afc8f34c58f709c [2021-08-26 01:09:19,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:09:19,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:09:19,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:09:19,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:09:19,761 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:09:19,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-08-26 01:09:19,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf1afbaa/e99020eed382403ca2178300dd16155f/FLAGf2dd9ae09 [2021-08-26 01:09:20,182 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:09:20,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-08-26 01:09:20,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf1afbaa/e99020eed382403ca2178300dd16155f/FLAGf2dd9ae09 [2021-08-26 01:09:20,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf1afbaa/e99020eed382403ca2178300dd16155f [2021-08-26 01:09:20,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:09:20,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:09:20,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:09:20,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:09:20,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:09:20,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186c82c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20, skipping insertion in model container [2021-08-26 01:09:20,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:09:20,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:09:20,313 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-08-26 01:09:20,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:09:20,343 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:09:20,352 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-08-26 01:09:20,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:09:20,386 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:09:20,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20 WrapperNode [2021-08-26 01:09:20,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:09:20,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:09:20,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:09:20,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:09:20,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:09:20,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:09:20,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:09:20,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:09:20,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:09:20,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:09:20,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:09:20,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:09:20,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (1/1) ... [2021-08-26 01:09:20,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:09:20,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:09:20,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:09:20,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:09:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:09:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:09:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:09:20,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:09:20,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:09:20,667 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-26 01:09:20,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:09:20 BoogieIcfgContainer [2021-08-26 01:09:20,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:09:20,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:09:20,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:09:20,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:09:20,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:09:20" (1/3) ... [2021-08-26 01:09:20,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc946e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:09:20, skipping insertion in model container [2021-08-26 01:09:20,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:20" (2/3) ... [2021-08-26 01:09:20,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc946e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:09:20, skipping insertion in model container [2021-08-26 01:09:20,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:09:20" (3/3) ... [2021-08-26 01:09:20,675 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2021-08-26 01:09:20,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:09:20,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:09:20,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:09:20,724 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:09:20,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:09:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:09:20,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 01:09:20,735 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:09:20,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 01:09:20,736 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:09:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:09:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-08-26 01:09:20,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:09:20,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991228244] [2021-08-26 01:09:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:09:20,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:09:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:09:20,805 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:09:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:09:20,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:09:20,837 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:09:20,838 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:09:20,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:09:20,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:09:20,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:09:20 BoogieIcfgContainer [2021-08-26 01:09:20,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:09:20,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:09:20,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:09:20,858 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:09:20,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:09:20" (3/4) ... [2021-08-26 01:09:20,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:09:20,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:09:20,863 INFO L168 Benchmark]: Toolchain (without parser) took 659.30 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 30.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-08-26 01:09:20,864 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:09:20,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.26 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 42.9 MB in the end (delta: -858.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:09:20,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.48 ms. Allocated memory is still 58.7 MB. Free memory was 42.7 MB in the beginning and 41.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:09:20,865 INFO L168 Benchmark]: Boogie Preprocessor took 19.03 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:09:20,866 INFO L168 Benchmark]: RCFGBuilder took 235.44 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 29.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:09:20,867 INFO L168 Benchmark]: TraceAbstraction took 185.98 ms. Allocated memory is still 58.7 MB. Free memory was 29.5 MB in the beginning and 30.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2021-08-26 01:09:20,870 INFO L168 Benchmark]: Witness Printer took 3.50 ms. Allocated memory is still 58.7 MB. Free memory was 30.6 MB in the beginning and 30.4 MB in the end (delta: 226.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:09:20,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 184.26 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 42.9 MB in the end (delta: -858.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.48 ms. Allocated memory is still 58.7 MB. Free memory was 42.7 MB in the beginning and 41.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.03 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 235.44 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 29.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 185.98 ms. Allocated memory is still 58.7 MB. Free memory was 29.5 MB in the beginning and 30.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.50 ms. Allocated memory is still 58.7 MB. Free memory was 30.6 MB in the beginning and 30.4 MB in the end (delta: 226.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 123.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.9ms SsaConstructionTime, 20.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-08-26 01:09:20,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:09:22,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:09:22,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:09:22,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:09:22,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:09:22,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:09:22,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:09:22,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:09:22,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:09:22,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:09:22,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:09:22,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:09:22,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:09:22,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:09:22,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:09:22,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:09:22,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:09:22,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:09:22,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:09:22,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:09:22,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:09:22,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:09:22,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:09:22,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:09:22,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:09:22,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:09:22,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:09:22,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:09:22,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:09:22,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:09:22,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:09:22,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:09:22,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:09:22,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:09:22,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:09:22,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:09:22,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:09:22,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:09:22,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:09:22,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:09:22,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:09:22,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:09:22,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:09:22,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:09:22,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:09:22,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:09:22,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:09:22,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:09:22,557 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:09:22,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:09:22,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:09:22,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:09:22,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:09:22,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:09:22,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:09:22,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:09:22,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:09:22,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:09:22,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:09:22,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:09:22,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:09:22,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:09:22,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:09:22,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:09:22,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:09:22,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:09:22,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:09:22,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:09:22,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:09:22,572 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:09:22,572 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:09:22,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:09:22,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:09:22,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:09:22,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91279e250c876c25b5b998426afc8f34c58f709c [2021-08-26 01:09:22,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:09:22,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:09:22,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:09:22,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:09:22,844 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:09:22,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-08-26 01:09:22,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303448604/d139dc2e49644e20828b7febbc2446e5/FLAGf801c15d5 [2021-08-26 01:09:23,272 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:09:23,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2021-08-26 01:09:23,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303448604/d139dc2e49644e20828b7febbc2446e5/FLAGf801c15d5 [2021-08-26 01:09:23,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303448604/d139dc2e49644e20828b7febbc2446e5 [2021-08-26 01:09:23,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:09:23,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:09:23,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:09:23,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:09:23,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:09:23,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e860f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23, skipping insertion in model container [2021-08-26 01:09:23,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:09:23,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:09:23,429 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-08-26 01:09:23,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:09:23,447 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:09:23,463 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i[808,821] [2021-08-26 01:09:23,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:09:23,493 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:09:23,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23 WrapperNode [2021-08-26 01:09:23,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:09:23,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:09:23,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:09:23,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:09:23,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:09:23,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:09:23,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:09:23,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:09:23,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:09:23,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:09:23,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:09:23,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:09:23,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (1/1) ... [2021-08-26 01:09:23,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:09:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:09:23,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:09:23,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:09:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:09:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:09:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:09:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:09:28,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:09:28,061 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-26 01:09:28,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:09:28 BoogieIcfgContainer [2021-08-26 01:09:28,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:09:28,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:09:28,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:09:28,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:09:28,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:09:23" (1/3) ... [2021-08-26 01:09:28,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f722afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:09:28, skipping insertion in model container [2021-08-26 01:09:28,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:09:23" (2/3) ... [2021-08-26 01:09:28,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f722afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:09:28, skipping insertion in model container [2021-08-26 01:09:28,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:09:28" (3/3) ... [2021-08-26 01:09:28,067 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2021-08-26 01:09:28,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:09:28,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:09:28,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:09:28,101 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:09:28,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:09:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:09:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 01:09:28,111 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:09:28,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 01:09:28,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:09:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:09:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-08-26 01:09:28,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:09:28,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255175082] [2021-08-26 01:09:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:09:28,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:09:28,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:09:28,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:09:28,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:09:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:09:28,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 01:09:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:09:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:09:34,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:09:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:09:38,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:09:38,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255175082] [2021-08-26 01:09:38,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255175082] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:09:38,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:09:38,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-26 01:09:38,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443973250] [2021-08-26 01:09:38,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 01:09:38,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:09:38,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 01:09:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-08-26 01:09:38,733 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:09:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:09:50,675 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-08-26 01:09:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 01:09:50,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-26 01:09:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:09:50,681 INFO L225 Difference]: With dead ends: 21 [2021-08-26 01:09:50,681 INFO L226 Difference]: Without dead ends: 9 [2021-08-26 01:09:50,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9057.8ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-08-26 01:09:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-26 01:09:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-26 01:09:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:09:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-26 01:09:50,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-08-26 01:09:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:09:50,700 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-26 01:09:50,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:09:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-26 01:09:50,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 01:09:50,701 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:09:50,701 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-26 01:09:50,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:09:50,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:09:50,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:09:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:09:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-08-26 01:09:50,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:09:50,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091045908] [2021-08-26 01:09:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:09:50,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:09:50,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:09:50,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:09:50,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:09:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:09:52,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 01:09:52,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:10:03,417 WARN L207 SmtUtils]: Spent 5.11 s on a formula simplification that was a NOOP. DAG size: 3 [2021-08-26 01:10:16,697 WARN L207 SmtUtils]: Spent 7.45 s on a formula simplification that was a NOOP. DAG size: 12 [2021-08-26 01:10:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:10:22,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:10:29,262 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) is different from false [2021-08-26 01:10:31,407 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) is different from true [2021-08-26 01:10:38,346 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-08-26 01:10:40,628 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-08-26 01:10:47,901 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-08-26 01:10:50,344 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-08-26 01:10:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-08-26 01:10:50,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:10:50,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091045908] [2021-08-26 01:10:50,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091045908] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 01:10:50,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 01:10:50,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-08-26 01:10:50,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950935685] [2021-08-26 01:10:50,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:10:50,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:10:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:10:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=25, Unknown=9, NotChecked=36, Total=90 [2021-08-26 01:10:50,347 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:10:52,849 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-26 01:10:55,229 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-08-26 01:10:57,401 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-08-26 01:11:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:11:11,385 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-08-26 01:11:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 01:11:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 01:11:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:11:11,386 INFO L225 Difference]: With dead ends: 15 [2021-08-26 01:11:11,386 INFO L226 Difference]: Without dead ends: 11 [2021-08-26 01:11:11,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42474.9ms TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=12, NotChecked=90, Total=156 [2021-08-26 01:11:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-26 01:11:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-26 01:11:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:11:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-08-26 01:11:11,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-08-26 01:11:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:11:11,388 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-08-26 01:11:11,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:11:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-08-26 01:11:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:11:11,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:11:11,389 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-08-26 01:11:11,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:11:11,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:11:11,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:11:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:11:11,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2021-08-26 01:11:11,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:11:11,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564868059] [2021-08-26 01:11:11,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 01:11:11,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:11:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:11:11,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:11:11,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:11:14,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 01:11:14,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 01:11:14,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 01:11:14,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:11:25,631 WARN L207 SmtUtils]: Spent 5.07 s on a formula simplification that was a NOOP. DAG size: 3 [2021-08-26 01:11:27,978 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-26 01:11:33,606 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 3 [2021-08-26 01:11:36,908 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2021-08-26 01:11:43,106 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 3 [2021-08-26 01:11:45,494 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2021-08-26 01:11:52,268 WARN L207 SmtUtils]: Spent 6.73 s on a formula simplification that was a NOOP. DAG size: 3 [2021-08-26 01:11:59,370 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from false [2021-08-26 01:11:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-08-26 01:11:59,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:12:07,903 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-08-26 01:12:10,056 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-08-26 01:12:19,950 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-08-26 01:12:22,240 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-08-26 01:12:24,516 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-08-26 01:12:29,853 WARN L207 SmtUtils]: Spent 5.33 s on a formula simplification that was a NOOP. DAG size: 9 [2021-08-26 01:12:35,461 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 9 [2021-08-26 01:12:37,893 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-08-26 01:12:40,322 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-08-26 01:12:46,192 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 10 [2021-08-26 01:12:52,368 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 10 [2021-08-26 01:12:54,964 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-08-26 01:12:57,553 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-08-26 01:13:04,013 WARN L207 SmtUtils]: Spent 6.46 s on a formula simplification that was a NOOP. DAG size: 12 [2021-08-26 01:13:10,807 WARN L207 SmtUtils]: Spent 6.79 s on a formula simplification that was a NOOP. DAG size: 12 [2021-08-26 01:13:12,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-26 01:13:12,951 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-26 01:13:12,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:13:12,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564868059] [2021-08-26 01:13:12,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-08-26 01:13:12,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2016706875] [2021-08-26 01:13:12,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 01:13:12,953 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 01:13:12,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 01:13:12,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 01:13:12,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-08-26 01:13:18,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 01:13:18,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 01:13:18,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 01:13:18,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:13:18,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-08-26 01:13:18,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315367983] [2021-08-26 01:13:18,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 01:13:18,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:13:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:13:18,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 01:13:18,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 01:21:30,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 01:21:30,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 01:21:31,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 01:21:31,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:21:31,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-08-26 01:21:31,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:21:31,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 01:21:31,225 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 01:21:31,225 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 01:21:31,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:21:31,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-08-26 01:21:31,631 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-08-26 01:21:31,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2021-08-26 01:21:31,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-26 01:21:31,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:21:31,905 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:21:31,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:21:31 BoogieIcfgContainer [2021-08-26 01:21:31,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:21:31,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:21:31,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:21:31,927 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:21:31,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:09:28" (3/4) ... [2021-08-26 01:21:31,930 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:21:31,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:21:31,931 INFO L168 Benchmark]: Toolchain (without parser) took 728642.71 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 27.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-26 01:21:31,931 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:21:31,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.49 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 47.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:21:31,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.25 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 46.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:21:31,932 INFO L168 Benchmark]: Boogie Preprocessor took 33.46 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 44.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:21:31,932 INFO L168 Benchmark]: RCFGBuilder took 4508.97 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 33.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:21:31,933 INFO L168 Benchmark]: TraceAbstraction took 723860.51 ms. Allocated memory is still 65.0 MB. Free memory was 32.9 MB in the beginning and 27.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:21:31,933 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 65.0 MB. Free memory was 27.8 MB in the beginning and 27.3 MB in the end (delta: 496.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:21:31,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 205.49 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 47.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.25 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 46.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.46 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 44.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4508.97 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 33.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 723860.51 ms. Allocated memory is still 65.0 MB. Free memory was 32.9 MB in the beginning and 27.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 65.0 MB. Free memory was 27.8 MB in the beginning and 27.3 MB in the end (delta: 496.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND TRUE x1 != x [L25] x = x1 [L26] x1 = x/1.6 [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 723808.2ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 5.4ms, AutomataDifference: 33000.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 10 SDslu, 17 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 19425.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51532.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.4ms SsaConstructionTime, 2453.8ms SatisfiabilityAnalysisTime, 67483.7ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 8 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 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...