./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf 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 ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47ed977f76c934f7398d12ebfeb1101009979bf5 ............................................................................................................................................................................................................................................. 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 ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47ed977f76c934f7398d12ebfeb1101009979bf5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 13:01:42,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 13:01:42,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 13:01:42,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 13:01:42,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 13:01:42,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 13:01:42,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 13:01:42,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 13:01:42,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 13:01:42,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 13:01:42,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 13:01:42,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 13:01:42,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 13:01:42,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 13:01:42,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 13:01:42,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 13:01:42,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 13:01:42,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 13:01:42,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 13:01:42,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 13:01:42,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 13:01:42,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 13:01:42,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 13:01:42,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 13:01:42,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 13:01:42,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 13:01:42,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 13:01:42,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 13:01:42,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 13:01:42,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 13:01:42,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 13:01:42,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 13:01:42,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 13:01:42,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 13:01:42,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 13:01:42,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 13:01:42,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 13:01:42,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 13:01:42,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 13:01:42,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 13:01:42,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 13:01:42,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 13:01:42,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 13:01:42,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 13:01:42,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 13:01:42,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 13:01:42,316 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 13:01:42,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 13:01:42,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 13:01:42,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 13:01:42,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 13:01:42,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 13:01:42,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 13:01:42,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 13:01:42,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 13:01:42,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 13:01:42,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 13:01:42,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 13:01:42,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 13:01:42,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 13:01:42,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 13:01:42,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 13:01:42,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 13:01:42,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 13:01:42,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 13:01:42,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 13:01:42,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 13:01:42,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 13:01:42,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 13:01:42,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 13:01:42,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 13:01:42,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2020-11-29 13:01:42,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 13:01:42,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 13:01:42,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 13:01:42,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 13:01:42,792 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 13:01:42,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-11-29 13:01:42,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fa10a56/b870475f2908409583a4086eacf813fd/FLAGf3a6b1e45 [2020-11-29 13:01:43,556 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 13:01:43,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-11-29 13:01:43,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fa10a56/b870475f2908409583a4086eacf813fd/FLAGf3a6b1e45 [2020-11-29 13:01:43,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fa10a56/b870475f2908409583a4086eacf813fd [2020-11-29 13:01:43,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 13:01:43,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 13:01:43,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 13:01:43,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 13:01:43,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 13:01:43,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:43" (1/1) ... [2020-11-29 13:01:43,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f9110d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:43, skipping insertion in model container [2020-11-29 13:01:43,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:43" (1/1) ... [2020-11-29 13:01:44,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 13:01:44,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 13:01:44,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 13:01:44,251 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 13:01:44,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 13:01:44,288 INFO L208 MainTranslator]: Completed translation [2020-11-29 13:01:44,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44 WrapperNode [2020-11-29 13:01:44,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 13:01:44,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 13:01:44,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 13:01:44,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 13:01:44,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 13:01:44,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 13:01:44,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 13:01:44,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 13:01:44,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... [2020-11-29 13:01:44,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 13:01:44,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 13:01:44,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 13:01:44,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 13:01:44,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 13:01:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 13:01:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 13:01:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 13:01:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 13:01:44,693 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 13:01:44,693 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 13:01:44,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:44 BoogieIcfgContainer [2020-11-29 13:01:44,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 13:01:44,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 13:01:44,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 13:01:44,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 13:01:44,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:01:43" (1/3) ... [2020-11-29 13:01:44,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e1d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:44, skipping insertion in model container [2020-11-29 13:01:44,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:44" (2/3) ... [2020-11-29 13:01:44,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e1d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:44, skipping insertion in model container [2020-11-29 13:01:44,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:44" (3/3) ... [2020-11-29 13:01:44,707 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2020-11-29 13:01:44,725 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 13:01:44,730 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 13:01:44,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 13:01:44,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 13:01:44,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 13:01:44,782 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 13:01:44,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 13:01:44,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 13:01:44,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 13:01:44,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 13:01:44,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 13:01:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-29 13:01:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 13:01:44,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 13:01:44,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 13:01:44,811 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 13:01:44,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 13:01:44,819 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-11-29 13:01:44,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 13:01:44,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987048656] [2020-11-29 13:01:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 13:01:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 13:01:44,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 13:01:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 13:01:45,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 13:01:45,036 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 13:01:45,037 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 13:01:45,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 13:01:45,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:01:45 BoogieIcfgContainer [2020-11-29 13:01:45,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 13:01:45,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 13:01:45,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 13:01:45,068 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 13:01:45,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:44" (3/4) ... [2020-11-29 13:01:45,073 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 13:01:45,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 13:01:45,077 INFO L168 Benchmark]: Toolchain (without parser) took 1142.15 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 33.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 774.0 kB. Max. memory is 16.1 GB. [2020-11-29 13:01:45,078 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 44.0 MB. Free memory is still 22.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 13:01:45,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.33 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.5 MB in the beginning and 30.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-29 13:01:45,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.29 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 13:01:45,082 INFO L168 Benchmark]: Boogie Preprocessor took 25.48 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 28.6 MB in the end (delta: 872.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 13:01:45,083 INFO L168 Benchmark]: RCFGBuilder took 334.31 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 32.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-11-29 13:01:45,084 INFO L168 Benchmark]: TraceAbstraction took 368.79 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 34.0 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 13:01:45,085 INFO L168 Benchmark]: Witness Printer took 6.47 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 33.5 MB in the end (delta: 235.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 13:01:45,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 44.0 MB. Free memory is still 22.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.33 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.5 MB in the beginning and 30.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.29 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.48 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 28.6 MB in the end (delta: 872.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 334.31 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 32.1 MB in the end (delta: -3.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 368.79 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 34.0 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.47 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 33.5 MB in the end (delta: 235.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L4] __assert_fail("0", "Double_div_bad.i.p+cfa-reducer.c", 4, "reach_error") VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 13:01:47,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 13:01:47,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 13:01:47,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 13:01:47,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 13:01:47,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 13:01:47,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 13:01:47,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 13:01:47,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 13:01:47,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 13:01:47,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 13:01:47,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 13:01:47,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 13:01:47,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 13:01:47,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 13:01:47,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 13:01:47,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 13:01:47,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 13:01:47,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 13:01:47,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 13:01:47,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 13:01:47,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 13:01:47,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 13:01:47,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 13:01:47,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 13:01:47,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 13:01:47,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 13:01:47,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 13:01:47,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 13:01:47,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 13:01:47,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 13:01:47,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 13:01:47,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 13:01:47,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 13:01:47,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 13:01:47,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 13:01:47,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 13:01:47,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 13:01:47,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 13:01:47,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 13:01:47,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 13:01:47,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 13:01:47,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 13:01:47,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 13:01:47,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 13:01:47,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 13:01:47,814 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 13:01:47,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 13:01:47,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 13:01:47,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 13:01:47,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 13:01:47,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 13:01:47,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 13:01:47,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 13:01:47,817 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 13:01:47,818 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 13:01:47,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 13:01:47,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 13:01:47,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 13:01:47,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 13:01:47,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 13:01:47,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 13:01:47,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 13:01:47,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 13:01:47,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 13:01:47,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 13:01:47,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 13:01:47,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 13:01:47,822 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 13:01:47,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 13:01:47,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 13:01:47,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 13:01:47,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 13:01:47,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2020-11-29 13:01:48,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 13:01:48,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 13:01:48,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 13:01:48,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 13:01:48,347 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 13:01:48,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-11-29 13:01:48,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f13f571/92eb14e1acf54d83affef7c38e5d37d7/FLAG40085faad [2020-11-29 13:01:49,114 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 13:01:49,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-11-29 13:01:49,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f13f571/92eb14e1acf54d83affef7c38e5d37d7/FLAG40085faad [2020-11-29 13:01:49,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f13f571/92eb14e1acf54d83affef7c38e5d37d7 [2020-11-29 13:01:49,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 13:01:49,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 13:01:49,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 13:01:49,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 13:01:49,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 13:01:49,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e801da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49, skipping insertion in model container [2020-11-29 13:01:49,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 13:01:49,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 13:01:49,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 13:01:49,781 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 13:01:49,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 13:01:49,831 INFO L208 MainTranslator]: Completed translation [2020-11-29 13:01:49,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49 WrapperNode [2020-11-29 13:01:49,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 13:01:49,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 13:01:49,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 13:01:49,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 13:01:49,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 13:01:49,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 13:01:49,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 13:01:49,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 13:01:49,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... [2020-11-29 13:01:49,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 13:01:49,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 13:01:49,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 13:01:49,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 13:01:49,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 13:01:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 13:01:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 13:01:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 13:01:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 13:01:54,523 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 13:01:54,524 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 13:01:54,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:54 BoogieIcfgContainer [2020-11-29 13:01:54,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 13:01:54,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 13:01:54,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 13:01:54,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 13:01:54,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:01:49" (1/3) ... [2020-11-29 13:01:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57725e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:54, skipping insertion in model container [2020-11-29 13:01:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:49" (2/3) ... [2020-11-29 13:01:54,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57725e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:54, skipping insertion in model container [2020-11-29 13:01:54,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:54" (3/3) ... [2020-11-29 13:01:54,537 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2020-11-29 13:01:54,555 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 13:01:54,560 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 13:01:54,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 13:01:54,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 13:01:54,608 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 13:01:54,608 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 13:01:54,608 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 13:01:54,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 13:01:54,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 13:01:54,609 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 13:01:54,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 13:01:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-29 13:01:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 13:01:54,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 13:01:54,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 13:01:54,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 13:01:54,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 13:01:54,642 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-11-29 13:01:54,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 13:01:54,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559523341] [2020-11-29 13:01:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 13:01:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 13:01:55,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 13:01:55,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 13:01:59,945 WARN L197 SmtUtils]: Spent 3.40 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 13:01:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 13:01:59,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 13:02:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 13:02:05,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559523341] [2020-11-29 13:02:05,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 13:02:05,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 13:02:05,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105997186] [2020-11-29 13:02:05,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 13:02:05,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 13:02:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 13:02:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2020-11-29 13:02:05,235 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-11-29 13:02:13,179 WARN L197 SmtUtils]: Spent 6.73 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 13:02:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 13:02:18,501 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-29 13:02:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 13:02:18,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-29 13:02:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 13:02:18,515 INFO L225 Difference]: With dead ends: 17 [2020-11-29 13:02:18,515 INFO L226 Difference]: Without dead ends: 7 [2020-11-29 13:02:18,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-11-29 13:02:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-29 13:02:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-29 13:02:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 13:02:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-29 13:02:18,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-11-29 13:02:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 13:02:18,547 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-29 13:02:18,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 13:02:18,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-29 13:02:18,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 13:02:18,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 13:02:18,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 13:02:18,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 13:02:18,750 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 13:02:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 13:02:18,753 INFO L82 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2020-11-29 13:02:18,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 13:02:18,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748531123] [2020-11-29 13:02:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 13:02:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 13:02:20,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 13:02:20,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 13:02:26,313 WARN L197 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 13:02:28,508 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)))) is different from true [2020-11-29 13:02:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-11-29 13:02:28,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 13:02:30,692 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2020-11-29 13:02:32,839 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2020-11-29 13:02:35,122 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:02:37,401 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:02:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-11-29 13:02:37,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748531123] [2020-11-29 13:02:37,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 13:02:37,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-29 13:02:37,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800668615] [2020-11-29 13:02:37,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 13:02:37,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 13:02:37,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 13:02:37,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=13, Unknown=5, NotChecked=24, Total=56 [2020-11-29 13:02:37,407 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 8 states. [2020-11-29 13:02:39,728 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-29 13:02:42,032 WARN L838 $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_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)))) is different from false [2020-11-29 13:02:44,175 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_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)))) is different from true [2020-11-29 13:02:56,983 WARN L197 SmtUtils]: Spent 10.64 s on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-11-29 13:03:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 13:03:00,384 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-29 13:03:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 13:03:00,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-11-29 13:03:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 13:03:00,386 INFO L225 Difference]: With dead ends: 11 [2020-11-29 13:03:00,387 INFO L226 Difference]: Without dead ends: 8 [2020-11-29 13:03:00,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2020-11-29 13:03:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-29 13:03:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 13:03:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 13:03:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-29 13:03:00,392 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-29 13:03:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 13:03:00,393 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-29 13:03:00,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 13:03:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-29 13:03:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 13:03:00,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 13:03:00,394 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-29 13:03:00,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 13:03:00,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 13:03:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 13:03:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2020-11-29 13:03:00,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 13:03:00,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070382921] [2020-11-29 13:03:00,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 13:03:02,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 13:03:02,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 13:03:03,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 13:03:03,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 13:03:08,108 WARN L197 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 13:03:11,497 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~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 [2020-11-29 13:03:13,926 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0))) is different from false [2020-11-29 13:03:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-11-29 13:03:14,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 13:03:16,941 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2020-11-29 13:03:19,081 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2020-11-29 13:03:21,371 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_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-29 13:03:23,676 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_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-29 13:03:26,220 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .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 [2020-11-29 13:03:28,656 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 ((_ to_fp 11 53) c_currentRoundingMode 1.0) .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 [2020-11-29 13:03:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-11-29 13:03:28,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070382921] [2020-11-29 13:03:28,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 13:03:28,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-11-29 13:03:28,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110044464] [2020-11-29 13:03:28,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 13:03:28,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 13:03:28,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 13:03:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=8, NotChecked=60, Total=110 [2020-11-29 13:03:28,660 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 11 states. [2020-11-29 13:03:31,142 WARN L860 $PredicateComparison]: unable to prove that (and (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))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 13:03:33,439 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from true [2020-11-29 13:03:35,972 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-11-29 13:03:38,099 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 13:03:40,533 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0))) is different from false [2020-11-29 13:03:43,195 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2020-11-29 13:03:47,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 13:03:47,916 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-29 13:03:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 13:03:47,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 7 [2020-11-29 13:03:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 13:03:47,917 INFO L225 Difference]: With dead ends: 12 [2020-11-29 13:03:47,917 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 13:03:47,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=28, Invalid=24, Unknown=14, NotChecked=144, Total=210 [2020-11-29 13:03:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 13:03:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 13:03:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 13:03:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-29 13:03:47,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-11-29 13:03:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 13:03:47,924 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-29 13:03:47,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 13:03:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-29 13:03:47,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 13:03:47,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 13:03:47,925 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2020-11-29 13:03:48,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 13:03:48,126 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 13:03:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 13:03:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 3 times [2020-11-29 13:03:48,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 13:03:48,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853014036] [2020-11-29 13:03:48,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 13:03:51,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 13:03:51,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 13:03:51,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 13:03:51,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 13:03:57,303 WARN L197 SmtUtils]: Spent 4.99 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 13:04:00,109 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~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 [2020-11-29 13:04:02,262 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (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)))) is different from true [2020-11-29 13:04:09,639 WARN L197 SmtUtils]: Spent 4.63 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-29 13:04:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2020-11-29 13:04:09,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 13:04:14,056 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2020-11-29 13:04:16,193 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2020-11-29 13:04:18,486 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_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:04:20,783 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_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:04:23,238 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 c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:04:25,691 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 c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:04:28,258 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 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:04:30,817 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 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:04:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2020-11-29 13:04:30,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853014036] [2020-11-29 13:04:30,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 13:04:30,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-29 13:04:30,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107354598] [2020-11-29 13:04:30,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 13:04:30,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 13:04:30,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 13:04:30,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=19, Unknown=12, NotChecked=78, Total=132 [2020-11-29 13:04:30,825 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 12 states. [2020-11-29 13:04:33,522 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 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 13:04:36,015 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from true [2020-11-29 13:04:38,674 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from false [2020-11-29 13:04:41,319 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from true [2020-11-29 13:04:44,039 WARN L838 $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_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from false [2020-11-29 13:04:46,709 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_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2020-11-29 13:04:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 13:04:57,505 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-29 13:04:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 13:04:57,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2020-11-29 13:04:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 13:04:57,634 INFO L225 Difference]: With dead ends: 13 [2020-11-29 13:04:57,634 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 13:04:57,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=31, Invalid=21, Unknown=18, NotChecked=170, Total=240 [2020-11-29 13:04:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 13:04:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 13:04:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 13:04:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 13:04:57,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-29 13:04:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 13:04:57,640 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 13:04:57,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 13:04:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 13:04:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 13:04:57,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 13:04:57,641 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2020-11-29 13:04:57,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 13:04:57,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 13:04:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 13:04:57,848 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 4 times [2020-11-29 13:04:57,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 13:04:57,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200466625] [2020-11-29 13:04:57,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 13:05:01,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 13:05:01,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 13:05:01,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 13:05:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 13:05:08,067 WARN L197 SmtUtils]: Spent 5.31 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 13:05:10,730 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~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 [2020-11-29 13:05:12,974 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (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)))) is different from true [2020-11-29 13:05:15,651 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_~main__x1~0)) is different from true [2020-11-29 13:05:17,810 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2020-11-29 13:05:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-11-29 13:05:17,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 13:05:20,140 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2020-11-29 13:05:22,291 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2020-11-29 13:05:24,629 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_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:05:26,886 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_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:05:29,356 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 c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:05:31,878 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 c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:05:34,674 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 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:05:37,412 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 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:05:40,897 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 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 13:05:44,061 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 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-29 13:05:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-11-29 13:05:44,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200466625] [2020-11-29 13:05:44,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 13:05:44,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-29 13:05:44,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362852577] [2020-11-29 13:05:44,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 13:05:44,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 13:05:44,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 13:05:44,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=16, Unknown=14, NotChecked=126, Total=182 [2020-11-29 13:05:44,065 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 14 states. [2020-11-29 13:05:47,329 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 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 13:05:49,991 WARN L838 $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 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2020-11-29 13:05:52,630 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 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-11-29 13:05:56,011 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from false [2020-11-29 13:05:58,411 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from true [2020-11-29 13:06:01,679 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1)))) is different from true [2020-11-29 13:06:05,063 WARN L838 $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_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (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_~main__x1~0))) is different from false [2020-11-29 13:06:07,668 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 13:06:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 13:06:07,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 13:06:07,870 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:851) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-11-29 13:06:07,878 INFO L168 Benchmark]: Toolchain (without parser) took 258385.09 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 34.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-29 13:06:07,879 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 39.8 MB. Free memory is still 17.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 13:06:07,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.14 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 32.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-29 13:06:07,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 52.4 MB. Free memory was 32.5 MB in the beginning and 31.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 13:06:07,882 INFO L168 Benchmark]: Boogie Preprocessor took 28.71 ms. Allocated memory is still 52.4 MB. Free memory was 31.0 MB in the beginning and 29.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 13:06:07,883 INFO L168 Benchmark]: RCFGBuilder took 4619.35 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 32.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-29 13:06:07,884 INFO L168 Benchmark]: TraceAbstraction took 253348.79 ms. Allocated memory is still 52.4 MB. Free memory was 32.0 MB in the beginning and 34.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-29 13:06:07,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 39.8 MB. Free memory is still 17.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.14 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 32.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 52.4 MB. Free memory was 32.5 MB in the beginning and 31.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.71 ms. Allocated memory is still 52.4 MB. Free memory was 31.0 MB in the beginning and 29.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4619.35 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 32.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 253348.79 ms. Allocated memory is still 52.4 MB. Free memory was 32.0 MB in the beginning and 34.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...