./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 ............................................................................................................................................................................................................................................. 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.i.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:48:28,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:48:28,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:48:28,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:48:28,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:48:28,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:48:28,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:48:28,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:48:28,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:48:28,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:48:28,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:48:28,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:48:28,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:48:28,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:48:28,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:48:28,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:48:28,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:48:28,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:48:28,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:48:28,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:48:28,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:48:28,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:48:28,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:48:28,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:48:28,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:48:28,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:48:28,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:48:28,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:48:28,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:48:28,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:48:28,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:48:28,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:48:28,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:48:28,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:48:28,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:48:28,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:48:28,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:48:28,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:48:28,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:48:28,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:48:28,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:48:28,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:48:28,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:48:28,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:48:28,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:48:28,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:48:28,696 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:48:28,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:48:28,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:48:28,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:48:28,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:48:28,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:48:28,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:48:28,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:48:28,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:48:28,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:48:28,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:48:28,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:48:28,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:48:28,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:48:28,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:48:28,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:48:28,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:48:28,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:48:28,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:48:28,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:48:28,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:48:28,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:48:28,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:48:28,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:48:28,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:48:28,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 [2020-10-24 22:48:29,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:48:29,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:48:29,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:48:29,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:48:29,299 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:48:29,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-10-24 22:48:29,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3c9b46d/892ef1fc4dc64eaabedad19d066d2d7a/FLAG92a298ccb [2020-10-24 22:48:30,090 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:48:30,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-10-24 22:48:30,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3c9b46d/892ef1fc4dc64eaabedad19d066d2d7a/FLAG92a298ccb [2020-10-24 22:48:30,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3c9b46d/892ef1fc4dc64eaabedad19d066d2d7a [2020-10-24 22:48:30,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:48:30,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:48:30,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:30,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:48:30,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:48:30,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:30,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7239c59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30, skipping insertion in model container [2020-10-24 22:48:30,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:30,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:48:30,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:48:30,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:30,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:48:30,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:30,921 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:48:30,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30 WrapperNode [2020-10-24 22:48:30,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:30,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:30,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:48:30,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:48:30,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:30,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:30,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:30,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:48:30,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:48:30,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:48:31,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (1/1) ... [2020-10-24 22:48:31,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:48:31,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:48:31,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:48:31,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:48:31,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (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 22:48:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:48:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:48:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:48:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:48:31,542 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:48:31,544 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 22:48:31,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:31 BoogieIcfgContainer [2020-10-24 22:48:31,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:48:31,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:48:31,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:48:31,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:48:31,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:48:30" (1/3) ... [2020-10-24 22:48:31,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c05f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:31, skipping insertion in model container [2020-10-24 22:48:31,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:30" (2/3) ... [2020-10-24 22:48:31,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c05f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:31, skipping insertion in model container [2020-10-24 22:48:31,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:31" (3/3) ... [2020-10-24 22:48:31,571 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2020-10-24 22:48:31,595 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:48:31,606 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:48:31,635 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:48:31,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:48:31,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:48:31,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:48:31,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:48:31,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:48:31,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:48:31,704 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:48:31,704 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:48:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 22:48:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-24 22:48:31,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:48:31,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-24 22:48:31,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:48:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:48:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-10-24 22:48:31,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:48:31,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673196865] [2020-10-24 22:48:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:48:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:48:32,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:48:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:48:32,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:48:32,125 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:48:32,127 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:48:32,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:48:32,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:48:32 BoogieIcfgContainer [2020-10-24 22:48:32,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:48:32,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:48:32,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:48:32,196 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:48:32,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:31" (3/4) ... [2020-10-24 22:48:32,204 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:48:32,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:48:32,211 INFO L168 Benchmark]: Toolchain (without parser) took 1746.13 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 38.0 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:32,216 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:32,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.62 ms. Allocated memory is still 54.5 MB. Free memory was 31.4 MB in the beginning and 35.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:32,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.27 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 34.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:32,225 INFO L168 Benchmark]: Boogie Preprocessor took 56.58 ms. Allocated memory is still 54.5 MB. Free memory was 34.1 MB in the beginning and 33.2 MB in the end (delta: 942.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:32,227 INFO L168 Benchmark]: RCFGBuilder took 497.12 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 36.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:32,228 INFO L168 Benchmark]: TraceAbstraction took 638.91 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 38.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:32,230 INFO L168 Benchmark]: Witness Printer took 10.52 ms. Allocated memory is still 54.5 MB. Free memory was 38.3 MB in the beginning and 38.0 MB in the end (delta: 249.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:32,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 451.62 ms. Allocated memory is still 54.5 MB. Free memory was 31.4 MB in the beginning and 35.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.27 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 34.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.58 ms. Allocated memory is still 54.5 MB. Free memory was 34.1 MB in the beginning and 33.2 MB in the end (delta: 942.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 497.12 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 36.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 638.91 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 38.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Witness Printer took 10.52 ms. Allocated memory is still 54.5 MB. Free memory was 38.3 MB in the beginning and 38.0 MB in the end (delta: 249.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 2.5; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L4] __assert_fail("0", "Double_div.i.p+cfa-reducer.c", 4, "reach_error") VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:48:35,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:48:35,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:48:35,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:48:35,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:48:35,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:48:35,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:48:35,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:48:35,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:48:35,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:48:35,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:48:35,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:48:35,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:48:35,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:48:35,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:48:35,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:48:35,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:48:35,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:48:35,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:48:35,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:48:35,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:48:35,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:48:35,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:48:35,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:48:35,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:48:35,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:48:35,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:48:35,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:48:35,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:48:35,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:48:35,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:48:35,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:48:35,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:48:35,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:48:35,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:48:35,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:48:35,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:48:35,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:48:35,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:48:35,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:48:35,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:48:35,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:48:35,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:48:35,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:48:35,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:48:35,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:48:35,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:48:35,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:48:35,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:48:35,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:48:35,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:48:35,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:48:35,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:48:35,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:48:35,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:48:35,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:48:35,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:48:35,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:48:35,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:48:35,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:48:35,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:48:35,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:48:35,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:48:35,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:48:35,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:48:35,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:48:35,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:48:35,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:48:35,673 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:48:35,673 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:48:35,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:48:35,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:48:35,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:48:35,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 [2020-10-24 22:48:36,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:48:36,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:48:36,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:48:36,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:48:36,248 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:48:36,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-10-24 22:48:36,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbf21cff/cf033ea55855407e921528541d88b9b3/FLAG4a46cb82d [2020-10-24 22:48:37,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:48:37,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-10-24 22:48:37,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbf21cff/cf033ea55855407e921528541d88b9b3/FLAG4a46cb82d [2020-10-24 22:48:37,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbf21cff/cf033ea55855407e921528541d88b9b3 [2020-10-24 22:48:37,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:48:37,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:48:37,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:37,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:48:37,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:48:37,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b64ade5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37, skipping insertion in model container [2020-10-24 22:48:37,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:48:37,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:48:37,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:37,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:48:37,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:37,892 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:48:37,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37 WrapperNode [2020-10-24 22:48:37,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:37,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:37,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:48:37,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:48:37,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:37,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:48:37,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:48:37,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:48:37,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2020-10-24 22:48:37,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:48:38,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:48:38,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:48:38,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:48:38,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (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 22:48:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:48:38,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:48:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:48:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:48:41,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:48:41,392 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 22:48:41,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:41 BoogieIcfgContainer [2020-10-24 22:48:41,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:48:41,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:48:41,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:48:41,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:48:41,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:48:37" (1/3) ... [2020-10-24 22:48:41,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b8d73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:41, skipping insertion in model container [2020-10-24 22:48:41,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (2/3) ... [2020-10-24 22:48:41,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b8d73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:41, skipping insertion in model container [2020-10-24 22:48:41,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:41" (3/3) ... [2020-10-24 22:48:41,408 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2020-10-24 22:48:41,424 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:48:41,431 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:48:41,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:48:41,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:48:41,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:48:41,484 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:48:41,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:48:41,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:48:41,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:48:41,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:48:41,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:48:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 22:48:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-24 22:48:41,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:48:41,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-24 22:48:41,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:48:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:48:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-10-24 22:48:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:48:41,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596163772] [2020-10-24 22:48:41,537 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 22:48:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:48:42,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 22:48:42,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:48:46,285 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:48:46,305 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 22:48:46,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:48:48,689 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 22:48:48,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596163772] [2020-10-24 22:48:48,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:48:48,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 22:48:48,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22508691] [2020-10-24 22:48:48,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 22:48:48,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:48:48,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 22:48:48,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 22:48:48,718 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-10-24 22:48:53,298 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:49:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:49:02,773 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-10-24 22:49:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 22:49:02,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-10-24 22:49:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:49:02,786 INFO L225 Difference]: With dead ends: 18 [2020-10-24 22:49:02,786 INFO L226 Difference]: Without dead ends: 8 [2020-10-24 22:49:02,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-24 22:49:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-24 22:49:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-24 22:49:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-24 22:49:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-24 22:49:02,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-10-24 22:49:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:49:02,840 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-24 22:49:02,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 22:49:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-24 22:49:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-24 22:49:02,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:49:02,842 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-10-24 22:49:03,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:49:03,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:49:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:49:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 1 times [2020-10-24 22:49:03,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:49:03,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127813618] [2020-10-24 22:49:03,070 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 22:49:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:49:03,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 22:49:03,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:49:06,437 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-10-24 22:49:11,341 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:49:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-10-24 22:49:11,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:49:15,962 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2020-10-24 22:49:18,249 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2020-10-24 22:49:20,783 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-10-24 22:49:23,317 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-10-24 22:49:25,874 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 22:49:28,448 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 22:49:28,449 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 22:49:28,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127813618] [2020-10-24 22:49:28,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:49:28,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-24 22:49:28,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818991300] [2020-10-24 22:49:28,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 22:49:28,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:49:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 22:49:28,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=19, Unknown=8, NotChecked=44, Total=90 [2020-10-24 22:49:28,457 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 10 states. [2020-10-24 22:49:31,046 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 22:49:33,585 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from true [2020-10-24 22:49:37,127 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)))) is different from true [2020-10-24 22:49:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:49:41,242 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-10-24 22:49:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 22:49:41,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-10-24 22:49:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:49:41,246 INFO L225 Difference]: With dead ends: 13 [2020-10-24 22:49:41,246 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 22:49:41,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=25, Invalid=22, Unknown=11, NotChecked=98, Total=156 [2020-10-24 22:49:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 22:49:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 22:49:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 22:49:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-24 22:49:41,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-10-24 22:49:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:49:41,253 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-24 22:49:41,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 22:49:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-24 22:49:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 22:49:41,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:49:41,254 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2020-10-24 22:49:41,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:49:41,466 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:49:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:49:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 2 times [2020-10-24 22:49:41,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:49:41,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076402168] [2020-10-24 22:49:41,470 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 22:49:42,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 22:49:42,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:49:42,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 22:49:42,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:49:49,433 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 22:49:52,224 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 22:49:54,386 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2020-10-24 22:49:56,468 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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_~main__x~0) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)))) is different from true [2020-10-24 22:49:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2020-10-24 22:49:56,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:50:00,973 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2020-10-24 22:50:03,502 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:50:06,011 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:50:08,818 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .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 22:50:11,616 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .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 22:50:15,076 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (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 22:50:18,406 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (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 22:50:21,424 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 (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 22:50:24,499 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 (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 22:50:24,500 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 22:50:24,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076402168] [2020-10-24 22:50:24,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:50:24,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-10-24 22:50:24,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681370420] [2020-10-24 22:50:24,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 22:50:24,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:50:24,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 22:50:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=33, Unknown=12, NotChecked=136, Total=210 [2020-10-24 22:50:24,505 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 15 states. [2020-10-24 22:50:27,599 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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 (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 22:50:30,689 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~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_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2020-10-24 22:50:34,079 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~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_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-10-24 22:50:36,888 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2020-10-24 22:50:39,959 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from true [2020-10-24 22:51:23,326 WARN L193 SmtUtils]: Spent 26.59 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-24 22:51:27,052 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (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_~main__x~0) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))))) is different from true [2020-10-24 22:51:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:51:31,770 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-24 22:51:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 22:51:31,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 9 [2020-10-24 22:51:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:51:31,772 INFO L225 Difference]: With dead ends: 14 [2020-10-24 22:51:31,773 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 22:51:31,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.3s TimeCoverageRelationStatistics Valid=42, Invalid=45, Unknown=21, NotChecked=312, Total=420 [2020-10-24 22:51:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 22:51:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 22:51:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 22:51:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-24 22:51:31,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-10-24 22:51:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:51:31,780 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-24 22:51:31,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 22:51:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-24 22:51:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 22:51:31,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:51:31,781 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2020-10-24 22:51:31,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 22:51:31,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:51:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:51:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1957592038, now seen corresponding path program 3 times [2020-10-24 22:51:31,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:51:31,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704654963] [2020-10-24 22:51:31,985 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 22:51:33,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 22:51:33,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:51:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 22:51:33,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:51:35,596 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) is different from false [2020-10-24 22:51:38,845 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse0 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from false [2020-10-24 22:51:41,281 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse0 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from true [2020-10-24 22:51:41,289 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 22:51:54,496 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) (= (bvadd c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_ULTIMATE.start_main_~main__x~0_16)))))) (= c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) is different from false [2020-10-24 22:52:02,134 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from false [2020-10-24 22:52:04,589 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from true [2020-10-24 22:52:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2020-10-24 22:52:04,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:52:06,972 WARN L838 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) is different from false [2020-10-24 22:52:11,169 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (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 22:52:13,680 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (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 22:52:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2020-10-24 22:52:13,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704654963] [2020-10-24 22:52:13,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:52:13,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-24 22:52:13,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516796888] [2020-10-24 22:52:13,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 22:52:13,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:52:13,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 22:52:13,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=16, Unknown=9, NotChecked=66, Total=110 [2020-10-24 22:52:13,695 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2020-10-24 22:52:16,194 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (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 22:52:18,706 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (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 22:52:22,190 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from false [2020-10-24 22:52:24,990 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from true [2020-10-24 22:52:27,766 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 .cse0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) c_ULTIMATE.start_main_~main__x1~0)) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse1)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse0) (not .cse2)) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse3 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_16))))) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse5))) (or (fp.eq .cse4 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)) (fp.eq .cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from false [2020-10-24 22:52:30,675 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 .cse0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) c_ULTIMATE.start_main_~main__x1~0)) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse1)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse0) (not .cse2)) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse3 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_16))))) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse5))) (or (fp.eq .cse4 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)) (fp.eq .cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from true [2020-10-24 22:52:33,218 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) (and (not .cse0) (or (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse2))) (and (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1) (not (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_16)))))) (= (bvadd c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse4))) (and (not (fp.eq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse4) .cse3) (not (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_16)))))) .cse0)))) is different from false [2020-10-24 22:52:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:52:33,227 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-24 22:52:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 22:52:33,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-24 22:52:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:52:33,228 INFO L225 Difference]: With dead ends: 11 [2020-10-24 22:52:33,228 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 22:52:33,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=27, Invalid=17, Unknown=16, NotChecked=150, Total=210 [2020-10-24 22:52:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 22:52:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 22:52:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 22:52:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 22:52:33,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-24 22:52:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:52:33,237 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 22:52:33,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 22:52:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 22:52:33,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 22:52:33,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 22:52:33,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 22:52:48,910 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 22:52:48,912 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.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:393) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:1052) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:183) 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) ... 34 more [2020-10-24 22:52:48,920 INFO L168 Benchmark]: Toolchain (without parser) took 251405.19 ms. Allocated memory was 46.1 MB in the beginning and 67.1 MB in the end (delta: 21.0 MB). Free memory was 24.0 MB in the beginning and 36.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:48,920 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory is still 28.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:52:48,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.52 ms. Allocated memory was 46.1 MB in the beginning and 67.1 MB in the end (delta: 21.0 MB). Free memory was 23.3 MB in the beginning and 45.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:48,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.81 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 44.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:52:48,923 INFO L168 Benchmark]: Boogie Preprocessor took 51.13 ms. Allocated memory is still 67.1 MB. Free memory was 44.1 MB in the beginning and 42.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:48,924 INFO L168 Benchmark]: RCFGBuilder took 3391.91 ms. Allocated memory is still 67.1 MB. Free memory was 42.9 MB in the beginning and 49.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:48,925 INFO L168 Benchmark]: TraceAbstraction took 247520.48 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 36.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-10-24 22:52:48,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory is still 28.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.52 ms. Allocated memory was 46.1 MB in the beginning and 67.1 MB in the end (delta: 21.0 MB). Free memory was 23.3 MB in the beginning and 45.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.81 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 44.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.13 ms. Allocated memory is still 67.1 MB. Free memory was 44.1 MB in the beginning and 42.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3391.91 ms. Allocated memory is still 67.1 MB. Free memory was 42.9 MB in the beginning and 49.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 247520.48 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 36.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 13.9 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...