./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91279e250c876c25b5b998426afc8f34c58f709c .................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91279e250c876c25b5b998426afc8f34c58f709c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:52:34,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:52:34,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:52:34,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:52:34,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:52:34,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:52:34,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:52:34,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:52:34,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:52:34,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:52:34,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:52:34,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:52:34,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:52:34,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:52:34,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:52:34,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:52:34,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:52:34,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:52:34,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:52:34,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:52:34,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:52:34,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:52:34,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:52:34,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:52:34,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:52:34,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:52:34,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:52:34,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:52:34,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:52:34,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:52:34,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:52:34,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:52:34,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:52:34,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:52:34,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:52:34,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:52:34,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:52:34,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:52:34,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:52:34,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:52:34,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:52:34,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:52:34,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:52:34,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:52:34,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:52:34,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:52:34,278 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:52:34,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:52:34,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:52:34,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:52:34,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:52:34,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:52:34,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:52:34,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:52:34,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:52:34,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:52:34,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:52:34,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:52:34,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:52:34,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:52:34,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:52:34,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:52:34,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:52:34,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:52:34,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:52:34,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:52:34,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:52:34,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:52:34,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:52:34,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:52:34,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:52:34,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91279e250c876c25b5b998426afc8f34c58f709c [2020-10-24 22:52:34,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:52:34,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:52:34,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:52:34,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:52:34,775 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:52:34,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-10-24 22:52:34,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9f65251e/c6af0936bac74b6e9aa3a398c645ef0c/FLAG479b2deaa [2020-10-24 22:52:35,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:52:35,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-10-24 22:52:35,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9f65251e/c6af0936bac74b6e9aa3a398c645ef0c/FLAG479b2deaa [2020-10-24 22:52:35,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9f65251e/c6af0936bac74b6e9aa3a398c645ef0c [2020-10-24 22:52:35,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:52:35,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:52:35,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:52:35,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:52:35,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:52:35,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:35" (1/1) ... [2020-10-24 22:52:35,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8f7b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:35, skipping insertion in model container [2020-10-24 22:52:35,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:35" (1/1) ... [2020-10-24 22:52:35,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:52:35,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:52:36,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:52:36,218 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:52:36,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:52:36,262 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:52:36,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36 WrapperNode [2020-10-24 22:52:36,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:52:36,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:52:36,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:52:36,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:52:36,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:52:36,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:52:36,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:52:36,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:52:36,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... [2020-10-24 22:52:36,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:52:36,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:52:36,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:52:36,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:52:36,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:52:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:52:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:52:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:52:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:52:36,736 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:52:36,737 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 22:52:36,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:36 BoogieIcfgContainer [2020-10-24 22:52:36,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:52:36,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:52:36,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:52:36,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:52:36,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:52:35" (1/3) ... [2020-10-24 22:52:36,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d3e880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:36, skipping insertion in model container [2020-10-24 22:52:36,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:36" (2/3) ... [2020-10-24 22:52:36,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d3e880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:36, skipping insertion in model container [2020-10-24 22:52:36,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:36" (3/3) ... [2020-10-24 22:52:36,750 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2020-10-24 22:52:36,767 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:52:36,774 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:52:36,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:52:36,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:52:36,843 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:52:36,843 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:52:36,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:52:36,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:52:36,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:52:36,846 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:52:36,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:52:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:52:36,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:52:36,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:52:36,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:52:36,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:52:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:52:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-24 22:52:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:52:36,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179229193] [2020-10-24 22:52:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:52:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:52:37,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:52:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:52:37,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:52:37,088 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:52:37,089 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:52:37,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:52:37,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:52:37 BoogieIcfgContainer [2020-10-24 22:52:37,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:52:37,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:52:37,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:52:37,127 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:52:37,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:36" (3/4) ... [2020-10-24 22:52:37,132 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:52:37,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:52:37,136 INFO L168 Benchmark]: Toolchain (without parser) took 1305.77 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 39.5 MB in the end (delta: -16.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:52:37,137 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 25.7 MB in the beginning and 25.7 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:52:37,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.46 ms. Allocated memory is still 56.6 MB. Free memory was 41.9 MB in the beginning and 32.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:37,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.17 ms. Allocated memory is still 56.6 MB. Free memory was 32.7 MB in the beginning and 31.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:37,141 INFO L168 Benchmark]: Boogie Preprocessor took 42.74 ms. Allocated memory is still 56.6 MB. Free memory was 31.3 MB in the beginning and 30.3 MB in the end (delta: 996.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:52:37,142 INFO L168 Benchmark]: RCFGBuilder took 365.81 ms. Allocated memory is still 56.6 MB. Free memory was 30.2 MB in the beginning and 35.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:37,143 INFO L168 Benchmark]: TraceAbstraction took 384.36 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 39.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:37,144 INFO L168 Benchmark]: Witness Printer took 6.37 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 39.5 MB in the end (delta: 251.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:52:37,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 25.7 MB in the beginning and 25.7 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.46 ms. Allocated memory is still 56.6 MB. Free memory was 41.9 MB in the beginning and 32.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.17 ms. Allocated memory is still 56.6 MB. Free memory was 32.7 MB in the beginning and 31.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.74 ms. Allocated memory is still 56.6 MB. Free memory was 31.3 MB in the beginning and 30.3 MB in the end (delta: 996.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 365.81 ms. Allocated memory is still 56.6 MB. Free memory was 30.2 MB in the beginning and 35.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 384.36 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 39.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.37 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 39.5 MB in the end (delta: 251.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/1.6; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Double_div_bad.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 8 NumberOfCodeBlocks, 8 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-a4ecdab [2020-10-24 22:52:39,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:52:39,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:52:39,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:52:39,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:52:39,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:52:39,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:52:39,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:52:39,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:52:39,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:52:39,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:52:39,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:52:39,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:52:39,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:52:39,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:52:39,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:52:39,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:52:39,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:52:39,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:52:39,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:52:39,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:52:39,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:52:39,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:52:39,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:52:39,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:52:39,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:52:39,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:52:39,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:52:39,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:52:39,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:52:39,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:52:39,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:52:39,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:52:39,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:52:39,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:52:39,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:52:39,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:52:39,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:52:39,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:52:39,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:52:39,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:52:39,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:52:39,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:52:39,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:52:39,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:52:39,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:52:39,973 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:52:39,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:52:39,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:52:39,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:52:39,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:52:39,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:52:39,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:52:39,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:52:39,977 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:52:39,977 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:52:39,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:52:39,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:52:39,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:52:39,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:52:39,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:52:39,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:52:39,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:52:39,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:52:39,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:52:39,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:52:39,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:52:39,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:52:39,980 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:52:39,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:52:39,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:52:39,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:52:39,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:52:39,982 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91279e250c876c25b5b998426afc8f34c58f709c [2020-10-24 22:52:40,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:52:40,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:52:40,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:52:40,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:52:40,526 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:52:40,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-10-24 22:52:40,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74707af/c4f1bf08fa8049c6ae41dec790be118d/FLAG6fbfcb398 [2020-10-24 22:52:41,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:52:41,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i [2020-10-24 22:52:41,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74707af/c4f1bf08fa8049c6ae41dec790be118d/FLAG6fbfcb398 [2020-10-24 22:52:41,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74707af/c4f1bf08fa8049c6ae41dec790be118d [2020-10-24 22:52:41,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:52:41,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:52:41,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:52:41,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:52:41,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:52:41,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:41" (1/1) ... [2020-10-24 22:52:41,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3040c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:41, skipping insertion in model container [2020-10-24 22:52:41,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:41" (1/1) ... [2020-10-24 22:52:41,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:52:41,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:52:42,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:52:42,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:52:42,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:52:42,138 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:52:42,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42 WrapperNode [2020-10-24 22:52:42,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:52:42,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:52:42,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:52:42,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:52:42,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:52:42,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:52:42,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:52:42,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:52:42,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... [2020-10-24 22:52:42,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:52:42,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:52:42,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:52:42,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:52:42,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:52:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:52:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:52:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:52:42,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:52:46,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:52:46,421 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 22:52:46,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:46 BoogieIcfgContainer [2020-10-24 22:52:46,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:52:46,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:52:46,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:52:46,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:52:46,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:52:41" (1/3) ... [2020-10-24 22:52:46,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b1d166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:46, skipping insertion in model container [2020-10-24 22:52:46,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:42" (2/3) ... [2020-10-24 22:52:46,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b1d166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:46, skipping insertion in model container [2020-10-24 22:52:46,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:46" (3/3) ... [2020-10-24 22:52:46,435 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i [2020-10-24 22:52:46,448 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:52:46,453 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:52:46,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:52:46,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:52:46,498 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:52:46,498 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:52:46,498 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:52:46,498 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:52:46,498 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:52:46,499 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:52:46,499 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:52:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:52:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:52:46,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:52:46,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:52:46,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:52:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:52:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-24 22:52:46,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:52:46,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146944480] [2020-10-24 22:52:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 22:52:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:52:47,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 22:52:47,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:52:51,069 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:52:51,080 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 22:52:51,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:52:55,669 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.eq (fp.div c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) .cse0))) is different from false [2020-10-24 22:52:56,795 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 22:52:56,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146944480] [2020-10-24 22:52:56,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:52:56,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 22:52:56,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332808789] [2020-10-24 22:52:56,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 22:52:56,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:52:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 22:52:56,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 22:52:56,822 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-10-24 22:53:03,581 WARN L193 SmtUtils]: Spent 4.68 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:53:10,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:53:10,944 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-10-24 22:53:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 22:53:11,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-24 22:53:11,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:53:11,258 INFO L225 Difference]: With dead ends: 26 [2020-10-24 22:53:11,258 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 22:53:11,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-24 22:53:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 22:53:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 22:53:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 22:53:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-24 22:53:11,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-24 22:53:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:53:11,304 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-24 22:53:11,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 22:53:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-24 22:53:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 22:53:11,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:53:11,307 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:53:11,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:53:11,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:53:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:53:11,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 1 times [2020-10-24 22:53:11,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:53:11,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271041945] [2020-10-24 22:53:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 22:53:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:53:14,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 22:53:14,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:53:16,828 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))))) is different from true [2020-10-24 22:53:19,934 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-10-24 22:53:25,281 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:53:25,289 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 22:53:25,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:53:29,920 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) is different from false [2020-10-24 22:53:33,390 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-10-24 22:53:35,943 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-10-24 22:53:38,756 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-10-24 22:53:41,588 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-10-24 22:53:41,589 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 22:53:41,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271041945] [2020-10-24 22:53:41,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:53:41,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-24 22:53:41,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159588508] [2020-10-24 22:53:41,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 22:53:41,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:53:41,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 22:53:41,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=14, Unknown=8, NotChecked=50, Total=90 [2020-10-24 22:53:41,594 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-10-24 22:53:44,488 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:53:47,342 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2020-10-24 22:53:49,898 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-10-24 22:53:52,753 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from false [2020-10-24 22:53:55,249 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-10-24 22:54:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:54:04,376 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-24 22:54:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 22:54:04,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-24 22:54:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:54:04,378 INFO L225 Difference]: With dead ends: 18 [2020-10-24 22:54:04,379 INFO L226 Difference]: Without dead ends: 12 [2020-10-24 22:54:04,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=24, Invalid=15, Unknown=13, NotChecked=104, Total=156 [2020-10-24 22:54:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-24 22:54:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-24 22:54:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-24 22:54:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-24 22:54:04,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-24 22:54:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:54:04,384 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-24 22:54:04,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 22:54:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-24 22:54:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 22:54:04,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:54:04,385 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:54:04,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:54:04,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:54:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:54:04,589 INFO L82 PathProgramCache]: Analyzing trace with hash 469647633, now seen corresponding path program 2 times [2020-10-24 22:54:04,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:54:04,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931733932] [2020-10-24 22:54:04,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 22:54:07,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 22:54:07,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:54:07,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-24 22:54:07,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:54:15,882 WARN L193 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:54:18,626 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-10-24 22:54:21,120 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2020-10-24 22:54:24,284 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0))) is different from false [2020-10-24 22:54:26,796 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0))) is different from true [2020-10-24 22:54:30,030 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x~0))) is different from false [2020-10-24 22:54:33,098 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x~0))) is different from true [2020-10-24 22:54:33,105 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 22:54:33,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:54:35,463 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2020-10-24 22:54:37,752 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2020-10-24 22:54:40,349 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:54:42,952 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:54:45,867 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:54:48,791 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:54:52,115 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:54:55,412 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:54:55,413 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 22:54:55,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931733932] [2020-10-24 22:54:55,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:54:55,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-10-24 22:54:55,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713684736] [2020-10-24 22:54:55,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 22:54:55,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:54:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 22:54:55,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=31, Unknown=14, NotChecked=136, Total=210 [2020-10-24 22:54:55,419 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 15 states. [2020-10-24 22:54:58,742 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-10-24 22:55:02,102 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2020-10-24 22:55:05,034 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-10-24 22:55:08,322 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1)))) is different from true [2020-10-24 22:55:10,617 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:55:13,967 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:55:19,114 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:55:22,466 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x~0))) is different from false [2020-10-24 22:55:25,798 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x~0))) is different from true [2020-10-24 22:55:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:55:29,314 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-24 22:55:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 22:55:29,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 11 [2020-10-24 22:55:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:55:29,316 INFO L225 Difference]: With dead ends: 19 [2020-10-24 22:55:29,316 INFO L226 Difference]: Without dead ends: 13 [2020-10-24 22:55:29,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.8s TimeCoverageRelationStatistics Valid=41, Invalid=34, Unknown=23, NotChecked=322, Total=420 [2020-10-24 22:55:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-24 22:55:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-24 22:55:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-24 22:55:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-24 22:55:29,321 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-10-24 22:55:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:55:29,321 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-24 22:55:29,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 22:55:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-24 22:55:29,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:55:29,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:55:29,322 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:55:29,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 22:55:29,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:55:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:55:29,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1020395060, now seen corresponding path program 3 times [2020-10-24 22:55:29,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:55:29,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033825983] [2020-10-24 22:55:29,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 22:55:33,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 22:55:33,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:55:34,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 22:55:34,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:55:39,728 WARN L193 SmtUtils]: Spent 4.61 s on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:55:41,921 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-10-24 22:55:44,634 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2020-10-24 22:55:48,033 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-10-24 22:55:51,479 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0))) is different from true [2020-10-24 22:55:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-10-24 22:55:51,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:55:53,889 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2020-10-24 22:55:56,186 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2020-10-24 22:55:58,771 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:56:01,368 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:56:04,285 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:56:07,230 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:56:11,500 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:56:15,567 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:56:19,732 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:56:23,939 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:56:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-10-24 22:56:23,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033825983] [2020-10-24 22:56:23,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:56:23,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2020-10-24 22:56:23,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576427933] [2020-10-24 22:56:23,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 22:56:23,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:56:23,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 22:56:23,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=33, Unknown=14, NotChecked=162, Total=240 [2020-10-24 22:56:23,944 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 16 states. [2020-10-24 22:56:28,154 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-10-24 22:56:32,302 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-10-24 22:56:34,731 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 22:56:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 22:56:34,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 22:56:34,935 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:829) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-10-24 22:56:34,947 INFO L168 Benchmark]: Toolchain (without parser) took 233277.16 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 28.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:56:34,948 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 27.9 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:56:34,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.21 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.1 MB in the beginning and 34.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:56:34,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.41 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 32.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:56:34,950 INFO L168 Benchmark]: Boogie Preprocessor took 32.48 ms. Allocated memory is still 56.6 MB. Free memory was 32.8 MB in the beginning and 31.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:56:34,951 INFO L168 Benchmark]: RCFGBuilder took 4192.25 ms. Allocated memory is still 56.6 MB. Free memory was 31.6 MB in the beginning and 36.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-10-24 22:56:34,952 INFO L168 Benchmark]: TraceAbstraction took 228518.82 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 28.1 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:56:34,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 27.9 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.21 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.1 MB in the beginning and 34.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.41 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 32.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.48 ms. Allocated memory is still 56.6 MB. Free memory was 32.8 MB in the beginning and 31.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4192.25 ms. Allocated memory is still 56.6 MB. Free memory was 31.6 MB in the beginning and 36.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 228518.82 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 28.1 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...