./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Double_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/Double_div.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d14c90708f35eac31ae5d9fda6b5469e825b2252 .................................................................................................................................................................................................................................... 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 -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 d14c90708f35eac31ae5d9fda6b5469e825b2252 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:49:34,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:49:34,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:49:34,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:49:34,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:49:34,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:49:34,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:49:34,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:49:34,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:49:34,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:49:34,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:49:34,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:49:34,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:49:34,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:49:34,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:49:34,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:49:34,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:49:34,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:49:34,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:49:34,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:49:34,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:49:34,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:49:34,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:49:34,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:49:34,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:49:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:49:34,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:49:34,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:49:34,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:49:34,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:49:34,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:49:34,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:49:34,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:49:34,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:49:34,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:49:34,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:49:34,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:49:34,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:49:34,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:49:34,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:49:34,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:49:34,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:49:34,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:49:34,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:49:34,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:49:34,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:49:34,863 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:49:34,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:49:34,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:49:34,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:49:34,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:49:34,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:49:34,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:49:34,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:49:34,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:49:34,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:49:34,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:49:34,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:49:34,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:49:34,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:49:34,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:49:34,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:49:34,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:49:34,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:49:34,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:49:34,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:49:34,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:49:34,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:49:34,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:49:34,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:49:34,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:49:34,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14c90708f35eac31ae5d9fda6b5469e825b2252 [2020-10-24 22:49:35,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:49:35,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:49:35,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:49:35,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:49:35,364 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:49:35,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2020-10-24 22:49:35,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a373ffdef/af88c741670547c39a8813fbc503677f/FLAGfbf2c3e93 [2020-10-24 22:49:36,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:49:36,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2020-10-24 22:49:36,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a373ffdef/af88c741670547c39a8813fbc503677f/FLAGfbf2c3e93 [2020-10-24 22:49:36,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a373ffdef/af88c741670547c39a8813fbc503677f [2020-10-24 22:49:36,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:49:36,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:49:36,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:49:36,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:49:36,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:49:36,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd5215d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36, skipping insertion in model container [2020-10-24 22:49:36,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:49:36,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:49:36,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:49:36,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:49:36,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:49:36,874 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:49:36,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36 WrapperNode [2020-10-24 22:49:36,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:49:36,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:49:36,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:49:36,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:49:36,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:49:36,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:49:36,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:49:36,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:49:36,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... [2020-10-24 22:49:36,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:49:36,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:49:36,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:49:36,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:49:36,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:49:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:49:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:49:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:49:37,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:49:37,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:49:37,270 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 22:49:37,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:37 BoogieIcfgContainer [2020-10-24 22:49:37,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:49:37,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:49:37,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:49:37,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:49:37,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:49:36" (1/3) ... [2020-10-24 22:49:37,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fff1ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:49:37, skipping insertion in model container [2020-10-24 22:49:37,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:36" (2/3) ... [2020-10-24 22:49:37,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fff1ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:49:37, skipping insertion in model container [2020-10-24 22:49:37,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:37" (3/3) ... [2020-10-24 22:49:37,283 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2020-10-24 22:49:37,298 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:49:37,305 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:49:37,324 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:49:37,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:49:37,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:49:37,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:49:37,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:49:37,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:49:37,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:49:37,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:49:37,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:49:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:49:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:49:37,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:49:37,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:49:37,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:49:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:49:37,422 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-24 22:49:37,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:49:37,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971065267] [2020-10-24 22:49:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:49:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:49:37,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:49:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:49:37,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:49:37,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:49:37,656 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:49:37,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:49:37,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:49:37 BoogieIcfgContainer [2020-10-24 22:49:37,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:49:37,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:49:37,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:49:37,697 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:49:37,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:37" (3/4) ... [2020-10-24 22:49:37,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:49:37,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:49:37,706 INFO L168 Benchmark]: Toolchain (without parser) took 1175.44 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 26.2 MB in the beginning and 47.1 MB in the end (delta: -21.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:49:37,707 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 48.2 MB. Free memory was 28.9 MB in the beginning and 28.8 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:49:37,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.15 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 29.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:49:37,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.03 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 28.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:49:37,710 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 27.2 MB in the end (delta: 943.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:49:37,711 INFO L168 Benchmark]: RCFGBuilder took 326.88 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 27.1 MB in the beginning and 43.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:49:37,712 INFO L168 Benchmark]: TraceAbstraction took 420.86 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 47.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-10-24 22:49:37,713 INFO L168 Benchmark]: Witness Printer took 6.33 ms. Allocated memory is still 62.9 MB. Free memory was 47.4 MB in the beginning and 47.1 MB in the end (delta: 288.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:49:37,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 48.2 MB. Free memory was 28.9 MB in the beginning and 28.8 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.15 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 29.6 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 42.03 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 28.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 27.2 MB in the end (delta: 943.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 326.88 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 27.1 MB in the beginning and 43.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 420.86 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 47.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.33 ms. Allocated memory is still 62.9 MB. Free memory was 47.4 MB in the beginning and 47.1 MB in the end (delta: 288.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Double_div.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:49:40,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:49:40,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:49:40,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:49:40,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:49:40,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:49:40,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:49:40,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:49:40,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:49:40,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:49:40,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:49:40,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:49:40,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:49:40,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:49:40,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:49:40,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:49:40,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:49:40,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:49:40,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:49:40,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:49:40,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:49:40,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:49:40,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:49:40,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:49:40,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:49:40,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:49:40,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:49:40,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:49:40,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:49:40,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:49:40,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:49:40,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:49:40,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:49:40,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:49:40,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:49:40,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:49:40,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:49:40,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:49:40,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:49:40,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:49:40,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:49:40,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:49:40,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:49:40,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:49:40,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:49:40,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:49:40,845 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:49:40,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:49:40,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:49:40,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:49:40,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:49:40,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:49:40,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:49:40,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:49:40,850 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:49:40,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:49:40,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:49:40,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:49:40,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:49:40,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:49:40,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:49:40,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:49:40,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:49:40,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:49:40,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:49:40,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:49:40,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:49:40,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:49:40,856 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:49:40,856 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:49:40,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:49:40,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:49:40,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:49:40,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14c90708f35eac31ae5d9fda6b5469e825b2252 [2020-10-24 22:49:41,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:49:41,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:49:41,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:49:41,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:49:41,362 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:49:41,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2020-10-24 22:49:41,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89a6a36d/377e239d86b0494d8f3d3318277ca276/FLAG37a7ed2c0 [2020-10-24 22:49:42,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:49:42,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Double_div.i [2020-10-24 22:49:42,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89a6a36d/377e239d86b0494d8f3d3318277ca276/FLAG37a7ed2c0 [2020-10-24 22:49:42,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89a6a36d/377e239d86b0494d8f3d3318277ca276 [2020-10-24 22:49:42,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:49:42,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:49:42,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:49:42,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:49:42,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:49:42,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:42,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7662a651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42, skipping insertion in model container [2020-10-24 22:49:42,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:42,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:49:42,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:49:42,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:49:42,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:49:42,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:49:42,960 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:49:42,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42 WrapperNode [2020-10-24 22:49:42,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:49:42,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:49:42,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:49:42,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:49:42,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:42,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:49:43,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:49:43,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:49:43,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:49:43,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... [2020-10-24 22:49:43,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:49:43,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:49:43,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:49:43,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:49:43,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:49:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:49:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:49:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:49:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:49:47,964 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:49:47,964 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 22:49:47,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:47 BoogieIcfgContainer [2020-10-24 22:49:47,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:49:47,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:49:47,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:49:47,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:49:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:49:42" (1/3) ... [2020-10-24 22:49:47,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c725b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:49:47, skipping insertion in model container [2020-10-24 22:49:47,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42" (2/3) ... [2020-10-24 22:49:47,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c725b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:49:47, skipping insertion in model container [2020-10-24 22:49:47,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:47" (3/3) ... [2020-10-24 22:49:47,977 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2020-10-24 22:49:47,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:49:47,996 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:49:48,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:49:48,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:49:48,041 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:49:48,041 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:49:48,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:49:48,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:49:48,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:49:48,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:49:48,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:49:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:49:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:49:48,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:49:48,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:49:48,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:49:48,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:49:48,067 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-24 22:49:48,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:49:48,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641565204] [2020-10-24 22:49:48,084 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 22:49:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:49:48,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 22:49:48,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:49:53,613 WARN L193 SmtUtils]: Spent 4.57 s on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:49:53,623 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 22:49:53,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:49:53,668 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 22:49:53,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641565204] [2020-10-24 22:49:53,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:49:53,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 22:49:53,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434165159] [2020-10-24 22:49:53,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 22:49:53,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:49:53,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 22:49:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 22:49:53,692 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-10-24 22:49:59,241 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:50:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:50:05,660 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-10-24 22:50:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 22:50:05,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-24 22:50:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:50:05,669 INFO L225 Difference]: With dead ends: 26 [2020-10-24 22:50:05,669 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 22:50:05,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2020-10-24 22:50:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 22:50:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 22:50:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 22:50:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-24 22:50:05,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-24 22:50:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:50:05,706 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-24 22:50:05,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 22:50:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-24 22:50:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 22:50:05,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:50:05,708 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:50:05,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:50:05,926 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:50:05,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:50:05,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 1 times [2020-10-24 22:50:05,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:50:05,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238433504] [2020-10-24 22:50:05,928 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 22:50:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:50:06,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 22:50:06,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:50:08,983 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-10-24 22:50:11,694 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x~0 .cse0)) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0))) is different from true [2020-10-24 22:50:11,699 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 22:50:11,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:50:24,446 WARN L193 SmtUtils]: Spent 4.52 s on a formula simplification that was a NOOP. DAG size: 7 [2020-10-24 22:50:26,946 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_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-10-24 22:50:29,444 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_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-10-24 22:50:31,958 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 22:50:34,461 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 22:50:34,462 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 22:50:34,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238433504] [2020-10-24 22:50:34,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:50:34,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-24 22:50:34,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59861534] [2020-10-24 22:50:34,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 22:50:34,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:50:34,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 22:50:34,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=20, Unknown=7, NotChecked=44, Total=90 [2020-10-24 22:50:34,468 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-10-24 22:50:37,838 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 22:50:40,347 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from false [2020-10-24 22:50:47,096 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)))) is different from true [2020-10-24 22:50:59,379 WARN L193 SmtUtils]: Spent 7.72 s on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-10-24 22:51:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:51:06,922 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-24 22:51:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 22:51:07,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-24 22:51:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:51:07,182 INFO L225 Difference]: With dead ends: 19 [2020-10-24 22:51:07,182 INFO L226 Difference]: Without dead ends: 13 [2020-10-24 22:51:07,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=29, Invalid=29, Unknown=12, NotChecked=112, Total=182 [2020-10-24 22:51:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-24 22:51:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-24 22:51:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-24 22:51:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-24 22:51:07,194 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-24 22:51:07,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:51:07,195 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-24 22:51:07,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 22:51:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-24 22:51:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:51:07,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:51:07,196 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:51:07,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:51:07,397 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:51:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:51:07,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1020395060, now seen corresponding path program 2 times [2020-10-24 22:51:07,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:51:07,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472705566] [2020-10-24 22:51:07,401 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 22:51:08,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 22:51:08,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:51:08,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 22:51:08,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:51:16,612 WARN L193 SmtUtils]: Spent 4.57 s on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 22:51:19,385 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_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))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-10-24 22:51:21,508 WARN L860 $PredicateComparison]: unable to prove that (and (= (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_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-10-24 22:51:24,611 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_~x~0) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0))) is different from true [2020-10-24 22:51:24,617 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 22:51:24,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:51:29,105 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0))) is different from true [2020-10-24 22:51:31,629 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_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:51:34,171 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_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:51:36,993 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_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:51:39,774 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_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:51:42,766 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_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:51:45,819 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_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:51:48,850 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 22:51:51,892 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 22:51:51,893 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 22:51:51,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472705566] [2020-10-24 22:51:51,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:51:51,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2020-10-24 22:51:51,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466970967] [2020-10-24 22:51:51,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 22:51:51,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:51:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 22:51:51,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=44, Unknown=12, NotChecked=152, Total=240 [2020-10-24 22:51:51,897 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 16 states. [2020-10-24 22:51:54,964 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 22:51:58,022 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_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2020-10-24 22:52:00,827 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1)))) is different from true [2020-10-24 22:52:03,380 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-10-24 22:52:05,918 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-10-24 22:52:09,679 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0))))) is different from true [2020-10-24 22:52:11,801 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_~x~0) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:52:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:52:13,564 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-24 22:52:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 22:52:13,564 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-24 22:52:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:52:13,565 INFO L225 Difference]: With dead ends: 20 [2020-10-24 22:52:13,565 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 22:52:13,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.2s TimeCoverageRelationStatistics Valid=44, Invalid=49, Unknown=19, NotChecked=350, Total=462 [2020-10-24 22:52:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 22:52:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 22:52:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 22:52:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-24 22:52:13,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-24 22:52:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:52:13,570 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-24 22:52:13,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 22:52:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-24 22:52:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 22:52:13,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:52:13,571 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:52:13,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 22:52:13,772 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:52:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:52:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash 32921713, now seen corresponding path program 3 times [2020-10-24 22:52:13,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:52:13,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169524600] [2020-10-24 22:52:13,775 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 22:52:14,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 22:52:14,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:52:14,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 22:52:14,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:52:18,964 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-10-24 22:52:21,520 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) is different from false [2020-10-24 22:52:24,085 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from false [2020-10-24 22:52:25,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 22:52:38,212 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse3))) (and (not (fp.eq .cse2 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2020-10-24 22:52:45,884 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2020-10-24 22:52:48,326 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2020-10-24 22:52:58,390 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 22:52:58,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:53:02,269 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) is different from true [2020-10-24 22:53:04,728 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-10-24 22:53:07,255 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-10-24 22:53:07,265 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 22:53:07,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169524600] [2020-10-24 22:53:07,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:53:07,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-24 22:53:07,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935269966] [2020-10-24 22:53:07,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 22:53:07,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:53:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 22:53:07,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=25, Unknown=9, NotChecked=98, Total=156 [2020-10-24 22:53:07,269 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2020-10-24 22:53:09,738 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))))) is different from false [2020-10-24 22:53:12,276 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))))) is different from true [2020-10-24 22:53:15,069 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)))) is different from false [2020-10-24 22:53:17,843 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)))) is different from true [2020-10-24 22:53:21,363 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse4 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (or (fp.eq c_ULTIMATE.start_main_~x1~0 .cse3) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) c_ULTIMATE.start_main_~x1~0)) .cse4) (or (not .cse4) (fp.eq c_ULTIMATE.start_main_~x~0 .cse3)))) is different from false [2020-10-24 22:53:24,162 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse4 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_19 (_ 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_~x~0_19 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_19) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (or (fp.eq c_ULTIMATE.start_main_~x1~0 .cse3) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) c_ULTIMATE.start_main_~x1~0)) .cse4) (or (not .cse4) (fp.eq c_ULTIMATE.start_main_~x~0 .cse3)))) is different from true [2020-10-24 22:53:26,716 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from false [2020-10-24 22:53:28,984 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from true [2020-10-24 22:53:31,520 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse2))) (and (not (fp.eq .cse1 v_ULTIMATE.start_main_~x~0_17)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse4))) (and (not (fp.eq .cse3 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse4) .cse3) (not (fp.eq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) .cse0)))) is different from false [2020-10-24 22:53:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:53:31,533 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-24 22:53:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 22:53:31,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-10-24 22:53:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:53:31,534 INFO L225 Difference]: With dead ends: 14 [2020-10-24 22:53:31,534 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 22:53:31,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=34, Invalid=26, Unknown=18, NotChecked=228, Total=306 [2020-10-24 22:53:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 22:53:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 22:53:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 22:53:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 22:53:31,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-24 22:53:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:53:31,538 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 22:53:31,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 22:53:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 22:53:31,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 22:53:31,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 22:53:31,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 22:54:31,169 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 22:54:31,171 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.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:131) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:53) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:737) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walkParam(SimplifyDDA.java:526) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:412) 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:650) 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) ... 35 more [2020-10-24 22:54:31,178 INFO L168 Benchmark]: Toolchain (without parser) took 288624.31 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 25.1 MB in the beginning and 44.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,179 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:54:31,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 27.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.62 ms. Allocated memory is still 48.2 MB. Free memory was 27.9 MB in the beginning and 26.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,181 INFO L168 Benchmark]: Boogie Preprocessor took 71.60 ms. Allocated memory is still 48.2 MB. Free memory was 26.6 MB in the beginning and 25.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:54:31,182 INFO L168 Benchmark]: RCFGBuilder took 4869.78 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 25.3 MB in the beginning and 42.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,184 INFO L168 Benchmark]: TraceAbstraction took 283207.07 ms. Allocated memory is still 65.0 MB. Free memory was 42.4 MB in the beginning and 44.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 27.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.62 ms. Allocated memory is still 48.2 MB. Free memory was 27.9 MB in the beginning and 26.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.60 ms. Allocated memory is still 48.2 MB. Free memory was 26.6 MB in the beginning and 25.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4869.78 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 25.3 MB in the beginning and 42.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 283207.07 ms. Allocated memory is still 65.0 MB. Free memory was 42.4 MB in the beginning and 44.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 15.9 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...