./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:51:07,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:51:07,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:51:07,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:51:07,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:51:07,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:51:07,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:51:07,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:51:07,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:51:07,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:51:07,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:51:07,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:51:07,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:51:07,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:51:07,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:51:07,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:51:07,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:51:07,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:51:07,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:51:07,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:51:07,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:51:07,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:51:07,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:51:07,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:51:07,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:51:07,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:51:07,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:51:07,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:51:07,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:51:07,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:51:07,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:51:07,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:51:07,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:51:07,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:51:07,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:51:07,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:51:07,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:51:07,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:51:07,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:51:07,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:51:07,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:51:07,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:51:07,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:51:07,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:51:07,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:51:07,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:51:07,266 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:51:07,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:51:07,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:51:07,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:51:07,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:51:07,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:51:07,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:51:07,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:51:07,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:51:07,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:51:07,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:51:07,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:51:07,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:51:07,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:51:07,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:51:07,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:51:07,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:51:07,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:51:07,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:51:07,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:51:07,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:51:07,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:51:07,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:51:07,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:51:07,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:51:07,277 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2020-10-24 14:51:07,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:51:07,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:51:07,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:51:07,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:51:07,786 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:51:07,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-10-24 14:51:07,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffa4200d/43413bd2dc374fb991464a4b2fa47c94/FLAG026c9630c [2020-10-24 14:51:08,611 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:51:08,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-10-24 14:51:08,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffa4200d/43413bd2dc374fb991464a4b2fa47c94/FLAG026c9630c [2020-10-24 14:51:08,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ffa4200d/43413bd2dc374fb991464a4b2fa47c94 [2020-10-24 14:51:08,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:51:08,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:51:08,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:51:08,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:51:08,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:51:08,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:08" (1/1) ... [2020-10-24 14:51:08,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1c4632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08, skipping insertion in model container [2020-10-24 14:51:08,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:08" (1/1) ... [2020-10-24 14:51:09,014 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:51:09,059 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:51:09,228 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:51:09,242 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:51:09,261 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:51:09,280 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:51:09,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09 WrapperNode [2020-10-24 14:51:09,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:51:09,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:51:09,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:51:09,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:51:09,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:51:09,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:51:09,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:51:09,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:51:09,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... [2020-10-24 14:51:09,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:51:09,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:51:09,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:51:09,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:51:09,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:51:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:51:09,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:51:09,861 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 14:51:09,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:09 BoogieIcfgContainer [2020-10-24 14:51:09,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:51:09,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:51:09,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:51:09,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:51:09,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:51:08" (1/3) ... [2020-10-24 14:51:09,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60868359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:09, skipping insertion in model container [2020-10-24 14:51:09,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:09" (2/3) ... [2020-10-24 14:51:09,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60868359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:09, skipping insertion in model container [2020-10-24 14:51:09,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:09" (3/3) ... [2020-10-24 14:51:09,886 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2020-10-24 14:51:09,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:51:09,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:51:09,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:51:09,971 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:51:09,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:51:09,972 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:51:09,972 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:51:09,972 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:51:09,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:51:09,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:51:09,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:51:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 14:51:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-24 14:51:10,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:51:10,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-24 14:51:10,003 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:51:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:51:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-10-24 14:51:10,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:51:10,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095443048] [2020-10-24 14:51:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:51:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:51:10,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:51:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:51:10,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:51:10,290 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:51:10,291 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:51:10,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:51:10,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:51:10 BoogieIcfgContainer [2020-10-24 14:51:10,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:51:10,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:51:10,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:51:10,341 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:51:10,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:09" (3/4) ... [2020-10-24 14:51:10,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:51:10,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:51:10,353 INFO L168 Benchmark]: Toolchain (without parser) took 1386.03 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 15.2 MB in the beginning and 29.9 MB in the end (delta: -14.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:51:10,356 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 37.7 MB. Free memory was 22.6 MB in the beginning and 22.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:51:10,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.95 ms. Allocated memory is still 37.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: -35.5 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 14:51:10,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 37.7 MB. Free memory was 14.5 MB in the beginning and 13.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:51:10,363 INFO L168 Benchmark]: Boogie Preprocessor took 32.08 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 13.1 MB in the beginning and 30.5 MB in the end (delta: -17.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 14:51:10,365 INFO L168 Benchmark]: RCFGBuilder took 506.37 ms. Allocated memory is still 46.1 MB. Free memory was 30.5 MB in the beginning and 30.2 MB in the end (delta: 249.0 kB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-10-24 14:51:10,367 INFO L168 Benchmark]: TraceAbstraction took 468.69 ms. Allocated memory is still 46.1 MB. Free memory was 29.8 MB in the beginning and 30.2 MB in the end (delta: -371.2 kB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:51:10,368 INFO L168 Benchmark]: Witness Printer took 7.85 ms. Allocated memory is still 46.1 MB. Free memory was 30.2 MB in the beginning and 29.9 MB in the end (delta: 252.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:51:10,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 37.7 MB. Free memory was 22.6 MB in the beginning and 22.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.95 ms. Allocated memory is still 37.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: -35.5 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 37.7 MB. Free memory was 14.5 MB in the beginning and 13.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.08 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 13.1 MB in the beginning and 30.5 MB in the end (delta: -17.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 506.37 ms. Allocated memory is still 46.1 MB. Free memory was 30.5 MB in the beginning and 30.2 MB in the end (delta: 249.0 kB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 468.69 ms. Allocated memory is still 46.1 MB. Free memory was 29.8 MB in the beginning and 30.2 MB in the end (delta: -371.2 kB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.85 ms. Allocated memory is still 46.1 MB. Free memory was 30.2 MB in the beginning and 29.9 MB in the end (delta: 252.4 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 someBinaryArithmeticDOUBLE_SMToperation at line 10, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 12. 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: 0.3s, 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-ee8e70e [2020-10-24 14:51:13,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:51:13,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:51:13,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:51:13,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:51:13,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:51:13,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:51:13,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:51:13,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:51:13,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:51:13,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:51:13,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:51:13,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:51:13,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:51:13,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:51:13,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:51:13,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:51:13,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:51:13,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:51:13,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:51:13,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:51:13,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:51:13,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:51:13,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:51:13,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:51:13,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:51:13,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:51:13,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:51:13,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:51:13,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:51:13,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:51:13,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:51:13,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:51:13,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:51:13,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:51:13,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:51:13,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:51:13,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:51:13,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:51:13,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:51:13,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:51:13,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:51:13,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:51:13,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:51:13,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:51:13,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:51:13,215 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:51:13,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:51:13,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:51:13,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:51:13,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:51:13,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:51:13,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:51:13,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:51:13,218 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:51:13,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:51:13,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:51:13,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:51:13,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:51:13,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:51:13,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:51:13,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:51:13,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:51:13,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:51:13,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:51:13,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:51:13,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:51:13,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:51:13,222 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:51:13,222 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:51:13,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:51:13,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:51:13,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:51:13,223 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2020-10-24 14:51:13,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:51:13,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:51:13,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:51:13,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:51:13,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:51:13,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-10-24 14:51:13,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096de5fc6/e89e56b8657e4298bd68466c5ee6a6c1/FLAGc3e54fcdc [2020-10-24 14:51:14,397 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:51:14,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2020-10-24 14:51:14,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096de5fc6/e89e56b8657e4298bd68466c5ee6a6c1/FLAGc3e54fcdc [2020-10-24 14:51:14,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/096de5fc6/e89e56b8657e4298bd68466c5ee6a6c1 [2020-10-24 14:51:14,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:51:14,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:51:14,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:51:14,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:51:14,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:51:14,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:14" (1/1) ... [2020-10-24 14:51:14,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f03082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:14, skipping insertion in model container [2020-10-24 14:51:14,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:14" (1/1) ... [2020-10-24 14:51:14,798 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:51:14,814 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:51:15,027 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:51:15,046 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:51:15,064 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:51:15,084 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:51:15,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15 WrapperNode [2020-10-24 14:51:15,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:51:15,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:51:15,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:51:15,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:51:15,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:51:15,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:51:15,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:51:15,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:51:15,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... [2020-10-24 14:51:15,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:51:15,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:51:15,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:51:15,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:51:15,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:51:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:51:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:51:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:51:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:51:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:51:18,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:51:18,629 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 14:51:18,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:18 BoogieIcfgContainer [2020-10-24 14:51:18,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:51:18,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:51:18,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:51:18,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:51:18,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:51:14" (1/3) ... [2020-10-24 14:51:18,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4411d4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:18, skipping insertion in model container [2020-10-24 14:51:18,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:15" (2/3) ... [2020-10-24 14:51:18,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4411d4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:18, skipping insertion in model container [2020-10-24 14:51:18,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:18" (3/3) ... [2020-10-24 14:51:18,640 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2020-10-24 14:51:18,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:51:18,660 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:51:18,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:51:18,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:51:18,706 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:51:18,706 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:51:18,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:51:18,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:51:18,707 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:51:18,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:51:18,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:51:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 14:51:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-24 14:51:18,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:51:18,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-24 14:51:18,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:51:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:51:18,747 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-10-24 14:51:18,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:51:18,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452948193] [2020-10-24 14:51:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 14:51:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:51:19,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:51:19,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:51:22,204 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0))) (exists ((|v_ULTIMATE.start_main_#t~nondet8_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_6|)))) (and (= (fp.div roundNearestTiesToEven (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)) .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))))))) is different from false [2020-10-24 14:51:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:51:22,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:51:24,536 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_7 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_6| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_7 (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_7) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_7) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_7))) (.cse0 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_7) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_7) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_7))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_6|)))) (or (not (= .cse0 ((_ to_fp 11 53) c_~CRM 1.0))) (not (= .cse1 (fp.div c_~CRM .cse0 .cse2))) (not (fp.eq .cse1 .cse0)) (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse2))))) is different from true [2020-10-24 14:51:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:51:24,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452948193] [2020-10-24 14:51:24,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:51:24,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:51:24,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769699780] [2020-10-24 14:51:24,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:51:24,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:51:24,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:51:24,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=10, Total=30 [2020-10-24 14:51:24,567 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 6 states. [2020-10-24 14:51:50,717 WARN L193 SmtUtils]: Spent 22.25 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-24 14:51:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:51:54,313 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-10-24 14:51:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:51:54,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-10-24 14:51:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:51:54,322 INFO L225 Difference]: With dead ends: 17 [2020-10-24 14:51:54,323 INFO L226 Difference]: Without dead ends: 7 [2020-10-24 14:51:54,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=13, Invalid=13, Unknown=2, NotChecked=14, Total=42 [2020-10-24 14:51:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-24 14:51:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-24 14:51:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-24 14:51:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-10-24 14:51:54,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-10-24 14:51:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:51:54,368 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-10-24 14:51:54,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:51:54,369 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-10-24 14:51:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:51:54,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:51:54,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:51:54,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:51:54,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:51:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:51:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2020-10-24 14:51:54,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:51:54,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986317496] [2020-10-24 14:51:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 14:51:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:51:56,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 14:51:56,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:51:58,625 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_8|)))) (and (= (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp.div c_~CRM .cse0 .cse1)) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse0) (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse1)))) (= roundNearestTiesToEven c_~CRM)) is different from false [2020-10-24 14:52:01,039 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|)))) (and (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (= (fp.div roundNearestTiesToEven (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)) .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)))))) (exists ((v_ULTIMATE.start_main_~main__x~0_8 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_8|))) (.cse2 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_8) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_8) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_8)))) (and (= .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (= (fp.div roundNearestTiesToEven .cse2 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0))) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2))))) is different from false [2020-10-24 14:52:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-10-24 14:52:01,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:52:03,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_9 (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|))) (.cse1 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_9)))) (or (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0)) (not (fp.eq .cse1 .cse2)) (not (= (fp.div c_~CRM .cse2 .cse0) .cse1))))) is different from false [2020-10-24 14:52:05,803 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_9 (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|))) (.cse1 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_9)))) (or (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0)) (not (fp.eq .cse1 .cse2)) (not (= (fp.div c_~CRM .cse2 .cse0) .cse1))))) is different from true [2020-10-24 14:52:08,266 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x1~0_10 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_10 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_9 (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_9))) (.cse2 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_10) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_10) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_10))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_10) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_10) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_10))) (.cse0 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_8|)))) (or (not (= .cse0 .cse1)) (not (= (fp.div c_~CRM .cse2 .cse1) .cse3)) (not (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4)) (not (fp.eq .cse3 .cse2)) (not (= .cse2 (fp.div c_~CRM .cse4 .cse5))) (not (= .cse0 .cse5))))) is different from true [2020-10-24 14:52:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-10-24 14:52:08,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986317496] [2020-10-24 14:52:08,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:52:08,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-24 14:52:08,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587937025] [2020-10-24 14:52:08,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 14:52:08,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:52:08,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 14:52:08,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=10, Unknown=5, NotChecked=28, Total=56 [2020-10-24 14:52:08,271 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 8 states. [2020-10-24 14:52:13,270 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 49 [2020-10-24 14:52:17,187 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_8|)))) (and (= (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp.div c_~CRM .cse0 .cse1)) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse0) (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse1)))) (= roundNearestTiesToEven c_~CRM) (forall ((|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_9 (_ BitVec 64))) (let ((.cse4 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_9) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_9)))) (or (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse2)) (not (fp.eq .cse3 .cse4)) (not (= (fp.div c_~CRM .cse4 .cse2) .cse3))))) (not (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0))))) is different from false [2020-10-24 14:52:20,662 WARN L838 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)))) (exists ((|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|)))) (and (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (= (fp.div roundNearestTiesToEven (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)) .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)))))) (exists ((v_ULTIMATE.start_main_~main__x~0_8 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_8|))) (.cse2 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_8) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_8) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_8)))) (and (= .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (= (fp.div roundNearestTiesToEven .cse2 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0))) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2))))) is different from false [2020-10-24 14:52:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:52:25,510 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-24 14:52:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 14:52:25,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-10-24 14:52:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:52:25,516 INFO L225 Difference]: With dead ends: 11 [2020-10-24 14:52:25,516 INFO L226 Difference]: Without dead ends: 8 [2020-10-24 14:52:25,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=20, Invalid=16, Unknown=8, NotChecked=66, Total=110 [2020-10-24 14:52:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-24 14:52:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-24 14:52:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-24 14:52:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-24 14:52:25,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-24 14:52:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:52:25,539 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-24 14:52:25,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 14:52:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-24 14:52:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-24 14:52:25,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:52:25,543 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-10-24 14:52:25,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:52:25,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:52:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:52:25,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2020-10-24 14:52:25,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:52:25,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236909045] [2020-10-24 14:52:25,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 14:52:30,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 14:52:30,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:52:30,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-24 14:52:30,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:52:33,218 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|)))) (and (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse1) (= (fp.div c_~CRM .cse1 .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))))))) is different from false [2020-10-24 14:52:35,999 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_11 (_ BitVec 64))) (let ((.cse0 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_11))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|))) (.cse3 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0)))) (and (= .cse0 .cse1) (= .cse0 .cse2) (= (fp.div c_~CRM .cse3 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4) (= (fp.div c_~CRM .cse4 .cse2) .cse3))))) is different from false [2020-10-24 14:52:40,100 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (and (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0) (= (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)) .cse0))))) (exists ((|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_11 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_12 (_ BitVec 64))) (let ((.cse1 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_11))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_12) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_12) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_12))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|)))) (and (= .cse1 .cse2) (= .cse3 (fp.div c_~CRM .cse4 .cse5)) (= .cse1 .cse5) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4) (= (fp.div c_~CRM .cse3 .cse2) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0))))))) is different from false [2020-10-24 14:52:40,208 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 14:52:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-10-24 14:52:46,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:52:47,060 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 14:52:49,474 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (forall ((v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse2 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (or (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0)) (not (fp.eq .cse1 .cse2)) (not (= .cse1 (fp.div c_~CRM .cse2 .cse0))))))) is different from true [2020-10-24 14:52:52,275 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_14 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse0 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_14))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (or (not (= .cse0 .cse1)) (not (= .cse0 .cse2)) (not (fp.eq .cse3 .cse4)) (not (= (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse2) .cse4)) (fp.eq .cse4 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (= .cse3 (fp.div c_~CRM .cse4 .cse1)))))) is different from true [2020-10-24 14:52:56,503 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_14 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_15 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_15 (_ BitVec 64))) (let ((.cse0 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse2 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_15) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_15) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_15))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|))) (.cse5 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|))) (.cse7 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_15) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_15) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_15))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse6 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_14)))) (or (not (= .cse0 .cse1)) (not (= ((_ to_fp 11 53) c_~CRM 1.0) .cse2)) (not (= .cse0 .cse3)) (not (= .cse0 .cse4)) (not (fp.eq .cse5 .cse6)) (not (= (fp.div c_~CRM .cse2 .cse4) .cse7)) (fp.eq .cse6 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (= .cse5 (fp.div c_~CRM .cse6 .cse1))) (not (= (fp.div c_~CRM .cse7 .cse3) .cse6))))) is different from true [2020-10-24 14:52:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-10-24 14:52:56,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236909045] [2020-10-24 14:52:56,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:52:56,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-10-24 14:52:56,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294706634] [2020-10-24 14:52:56,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 14:52:56,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:52:56,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 14:52:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=19, Unknown=6, NotChecked=66, Total=110 [2020-10-24 14:52:56,520 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 11 states. [2020-10-24 14:53:05,361 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification that was a NOOP. DAG size: 67 [2020-10-24 14:53:10,235 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|)))) (and (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse1) (= (fp.div c_~CRM .cse1 .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)))))) (forall ((|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_14 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse2 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse5 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse6 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_14))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (or (not (= .cse2 .cse3)) (not (= .cse2 .cse4)) (not (fp.eq .cse5 .cse6)) (not (= (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse4) .cse6)) (fp.eq .cse6 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (= .cse5 (fp.div c_~CRM .cse6 .cse3)))))) (let ((.cse7 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)))) (or (fp.eq .cse7 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse7))))) is different from false [2020-10-24 14:53:12,795 WARN L860 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|)))) (and (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse1) (= (fp.div c_~CRM .cse1 .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)))))) (forall ((|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_14 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse2 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse5 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse6 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_14) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_14))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (or (not (= .cse2 .cse3)) (not (= .cse2 .cse4)) (not (fp.eq .cse5 .cse6)) (not (= (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse4) .cse6)) (fp.eq .cse6 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (= .cse5 (fp.div c_~CRM .cse6 .cse3)))))) (let ((.cse7 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)))) (or (fp.eq .cse7 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse7))))) is different from true [2020-10-24 14:53:15,536 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_11 (_ BitVec 64))) (let ((.cse0 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_11))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|))) (.cse3 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0)))) (and (= .cse0 .cse1) (= .cse0 .cse2) (= (fp.div c_~CRM .cse3 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4) (= (fp.div c_~CRM .cse4 .cse2) .cse3)))) (or (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (forall ((v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse6 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse7 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (or (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse5)) (not (fp.eq .cse6 .cse7)) (not (= .cse6 (fp.div c_~CRM .cse7 .cse5)))))))) is different from false [2020-10-24 14:53:18,171 WARN L860 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_11 (_ BitVec 64))) (let ((.cse0 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_11))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|))) (.cse3 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0)))) (and (= .cse0 .cse1) (= .cse0 .cse2) (= (fp.div c_~CRM .cse3 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4) (= (fp.div c_~CRM .cse4 .cse2) .cse3)))) (or (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (forall ((v_ULTIMATE.start_main_~main__x1~0_13 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse6 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_13) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_13))) (.cse7 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (or (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse5)) (not (fp.eq .cse6 .cse7)) (not (= .cse6 (fp.div c_~CRM .cse7 .cse5)))))))) is different from true [2020-10-24 14:53:22,380 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet10_10| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_10|)))) (and (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0) (= (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)) .cse0))))) (exists ((|v_ULTIMATE.start_main_#t~nondet10_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_10| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_11 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_12 (_ BitVec 64))) (let ((.cse1 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_10|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_10|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_11) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_11))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_12) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_12) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_12))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_9|)))) (and (= .cse1 .cse2) (= .cse3 (fp.div c_~CRM .cse4 .cse5)) (= .cse1 .cse5) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4) (= (fp.div c_~CRM .cse3 .cse2) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)))))) (let ((.cse6 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)))) (or (fp.eq .cse6 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse6))))) is different from false [2020-10-24 14:53:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:53:26,344 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-24 14:53:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 14:53:26,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 7 [2020-10-24 14:53:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:53:26,349 INFO L225 Difference]: With dead ends: 12 [2020-10-24 14:53:26,349 INFO L226 Difference]: Without dead ends: 9 [2020-10-24 14:53:26,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=28, Invalid=26, Unknown=12, NotChecked=144, Total=210 [2020-10-24 14:53:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-24 14:53:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-24 14:53:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 14:53:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-24 14:53:26,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-10-24 14:53:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:53:26,360 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-24 14:53:26,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 14:53:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-24 14:53:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 14:53:26,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:53:26,362 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2020-10-24 14:53:26,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 14:53:26,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:53:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:53:26,579 INFO L82 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 3 times [2020-10-24 14:53:26,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:53:26,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467135302] [2020-10-24 14:53:26,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:53:32,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 14:53:32,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:53:33,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-24 14:53:33,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:53:36,119 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_12| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_12|)))) (and (= (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) (fp.div c_~CRM .cse0 .cse1)) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse0) (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse1)))) (= roundNearestTiesToEven c_~CRM)) is different from false [2020-10-24 14:53:38,968 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_14| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_16 (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_16) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_16) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_16))) (.cse4 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_12|))) (.cse2 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_14|)))) (and (= ((_ to_fp 11 53) c_~CRM 1.0) .cse0) (= (fp.div c_~CRM .cse0 .cse1) .cse2) (= .cse3 .cse4) (= .cse4 .cse1) (= (fp.div c_~CRM .cse2 .cse3) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))))))) is different from false [2020-10-24 14:53:43,456 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet10_15| (_ BitVec 64)) (ULTIMATE.start_main_~main__x~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_14| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_16 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_17 (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_16) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_16) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_16))) (.cse4 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_12|))) (.cse2 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_17) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_17) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_17))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_14|))) (.cse6 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) ULTIMATE.start_main_~main__x~0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_15|)))) (and (= ((_ to_fp 11 53) c_~CRM 1.0) .cse0) (= (fp.div c_~CRM .cse0 .cse1) .cse2) (= .cse3 .cse4) (= .cse5 .cse4) (= .cse4 .cse1) (= (fp.div c_~CRM .cse2 .cse3) .cse6) (= (fp.div c_~CRM .cse6 .cse5) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))))))) is different from false [2020-10-24 14:53:49,412 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_#t~nondet10_16| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_16|)))) (and (= (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0)) .cse0) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse0)))) (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet10_15| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_14| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet8_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_16 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_17 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x~0_18 (_ BitVec 64))) (let ((.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_16) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_16) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_16))) (.cse1 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_17) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_17) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_17))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_14|))) (.cse6 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet8_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet8_12|))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x~0_18) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x~0_18) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x~0_18))) (.cse7 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_15|)))) (and (= (fp.div c_~CRM .cse1 .cse2) .cse3) (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4) (= (fp.div c_~CRM .cse4 .cse5) .cse1) (= .cse2 .cse6) (= .cse7 .cse6) (= .cse6 .cse5) (= (fp.div c_~CRM .cse3 .cse7) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x~0))))))) is different from false [2020-10-24 14:53:49,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 14:53:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2020-10-24 14:53:59,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:53:59,782 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2020-10-24 14:54:00,593 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 14:54:03,051 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_#t~nondet10_16| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_19 (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0))) (.cse0 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_19) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_19) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_19))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_16|)))) (or (not (fp.eq .cse0 .cse1)) (not (= (fp.div c_~CRM .cse1 .cse2) .cse0)) (not (= ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)) .cse2))))) (fp.eq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) ((_ to_fp 11 53) c_~CRM (_ bv0 32)))) is different from true [2020-10-24 14:54:05,913 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet10_15| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_20 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_16| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_19 (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_16|))) (.cse3 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_19) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_19) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_19))) (.cse1 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_15|))) (.cse0 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_20) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_20) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_20)))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (= .cse1 .cse2)) (not (fp.eq .cse3 .cse0)) (not (= (fp.div c_~CRM .cse0 .cse2) .cse3)) (not (= .cse4 .cse1)) (not (= (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse4) .cse0))))) is different from true [2020-10-24 14:54:10,262 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x1~0_21 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_15| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_20 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_16| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet10_14| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__x1~0_19 (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_20) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_20) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_20))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_16|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_16|))) (.cse5 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_19) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_19) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_19))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_15|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_15|))) (.cse1 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__x1~0_21) ((_ extract 62 52) v_ULTIMATE.start_main_~main__x1~0_21) ((_ extract 51 0) v_ULTIMATE.start_main_~main__x1~0_21))) (.cse6 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_14|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_14|))) (.cse3 ((_ to_fp 11 53) c_~CRM (/ 8.0 5.0)))) (or (not (= .cse0 (fp.div c_~CRM .cse1 .cse2))) (fp.eq .cse0 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (not (= .cse3 .cse4)) (not (fp.eq .cse5 .cse0)) (not (= (fp.div c_~CRM .cse0 .cse4) .cse5)) (not (= .cse2 .cse3)) (not (= .cse1 (fp.div c_~CRM (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__x1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__x1~0)) .cse6))) (not (= .cse6 .cse3))))) is different from true [2020-10-24 14:54:13,058 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 14:54:13,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467135302] [2020-10-24 14:54:13,062 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-10-24 14:54:13,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1877443589] [2020-10-24 14:54:13,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-24 14:54:26,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 14:54:26,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:54:26,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-24 14:54:26,569 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@ba12db2 [2020-10-24 14:54:26,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065043402] [2020-10-24 14:54:26,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 15:00:28,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 15:00:28,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 15:00:30,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-24 15:00:30,525 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@ba12db2 [2020-10-24 15:00:30,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:00:30,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-24 15:00:30,526 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-24 15:00:30,526 INFO L523 BasicCegarLoop]: Counterexample might be feasible [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2020-10-24 15:00:31,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 15:00:31,232 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-24 15:00:31,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:00:31 BoogieIcfgContainer [2020-10-24 15:00:31,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:00:31,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:00:31,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:00:31,240 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:00:31,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:18" (3/4) ... [2020-10-24 15:00:31,251 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:00:31,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:00:31,255 INFO L168 Benchmark]: Toolchain (without parser) took 556484.64 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.5 MB in the beginning and 42.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 317.4 kB. Max. memory is 16.1 GB. [2020-10-24 15:00:31,257 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 24.2 MB in the beginning and 24.2 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:00:31,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.03 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 32.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:00:31,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 52.4 MB. Free memory was 32.0 MB in the beginning and 30.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:00:31,262 INFO L168 Benchmark]: Boogie Preprocessor took 31.26 ms. Allocated memory is still 52.4 MB. Free memory was 30.4 MB in the beginning and 29.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:00:31,263 INFO L168 Benchmark]: RCFGBuilder took 3469.36 ms. Allocated memory is still 52.4 MB. Free memory was 29.3 MB in the beginning and 31.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:00:31,264 INFO L168 Benchmark]: TraceAbstraction took 552601.65 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 42.7 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:00:31,266 INFO L168 Benchmark]: Witness Printer took 13.81 ms. Allocated memory is still 62.9 MB. Free memory was 42.6 MB in the beginning and 42.1 MB in the end (delta: 484.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:00:31,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 24.2 MB in the beginning and 24.2 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.03 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 32.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 52.4 MB. Free memory was 32.0 MB in the beginning and 30.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.26 ms. Allocated memory is still 52.4 MB. Free memory was 30.4 MB in the beginning and 29.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3469.36 ms. Allocated memory is still 52.4 MB. Free memory was 29.3 MB in the beginning and 31.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 552601.65 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 42.7 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 13.81 ms. Allocated memory is still 62.9 MB. Free memory was 42.6 MB in the beginning and 42.1 MB in the end (delta: 484.8 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] EXPR 1.0 [L9] double main__x = 1.0; [L10] EXPR 1.6 [L10] EXPR main__x / 1.6 [L10] double main__x1 = main__x / 1.6; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] EXPR 1.6 [L15] EXPR main__x / 1.6 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] EXPR 1.6 [L15] EXPR main__x / 1.6 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] EXPR 1.6 [L15] EXPR main__x / 1.6 [L15] main__x1 = main__x / 1.6 [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 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L4] __assert_fail("0", "Double_div_bad.i.p+cfa-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 552.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 76.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 3 SDslu, 40 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.5s Time, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.0s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 12 QuantifiedInterpolants, 5894 SizeOfPredicates, 13 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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...