./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Float_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/Float_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 aff65fabc2d382d12545e3467825c9efd3fdd157 .................................................................................................................................................................................................................................... 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/Float_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 aff65fabc2d382d12545e3467825c9efd3fdd157 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:54:28,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:54:28,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:54:28,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:54:28,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:54:28,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:54:28,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:54:28,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:54:28,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:54:28,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:54:28,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:54:28,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:54:28,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:54:28,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:54:28,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:54:28,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:54:28,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:54:28,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:54:28,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:54:28,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:54:28,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:54:28,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:54:28,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:54:28,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:54:28,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:54:28,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:54:28,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:54:28,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:54:28,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:54:28,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:54:28,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:54:28,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:54:28,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:54:28,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:54:28,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:54:28,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:54:28,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:54:28,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:54:28,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:54:28,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:54:28,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:54:28,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:54:28,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:54:28,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:54:28,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:54:28,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:54:28,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:54:28,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:54:28,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:54:28,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:54:28,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:54:28,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:54:28,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:54:28,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:54:28,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:54:28,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:54:28,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:54:28,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:54:28,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:54:28,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:54:28,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:54:28,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:54:28,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:54:28,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:54:28,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:54:28,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:54:28,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:54:28,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:54:28,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:54:28,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:54:28,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:54:28,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2020-10-24 22:54:29,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:54:29,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:54:29,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:54:29,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:54:29,081 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:54:29,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-10-24 22:54:29,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409e160b3/eaa000c582514aaaafefdb766467c64a/FLAGe592b3545 [2020-10-24 22:54:29,815 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:54:29,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-10-24 22:54:29,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409e160b3/eaa000c582514aaaafefdb766467c64a/FLAGe592b3545 [2020-10-24 22:54:30,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409e160b3/eaa000c582514aaaafefdb766467c64a [2020-10-24 22:54:30,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:54:30,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:54:30,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:54:30,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:54:30,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:54:30,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5e1384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30, skipping insertion in model container [2020-10-24 22:54:30,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:54:30,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:54:30,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:54:30,459 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:54:30,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:54:30,494 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:54:30,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30 WrapperNode [2020-10-24 22:54:30,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:54:30,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:54:30,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:54:30,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:54:30,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:54:30,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:54:30,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:54:30,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:54:30,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... [2020-10-24 22:54:30,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:54:30,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:54:30,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:54:30,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:54:30,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:54:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:54:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:54:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:54:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:54:30,921 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:54:30,921 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 22:54:30,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:54:30 BoogieIcfgContainer [2020-10-24 22:54:30,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:54:30,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:54:30,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:54:30,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:54:30,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:54:30" (1/3) ... [2020-10-24 22:54:30,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c54bf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:54:30, skipping insertion in model container [2020-10-24 22:54:30,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:30" (2/3) ... [2020-10-24 22:54:30,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c54bf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:54:30, skipping insertion in model container [2020-10-24 22:54:30,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:54:30" (3/3) ... [2020-10-24 22:54:30,944 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-10-24 22:54:30,976 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:54:30,991 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:54:31,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:54:31,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:54:31,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:54:31,037 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:54:31,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:54:31,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:54:31,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:54:31,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:54:31,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:54:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:54:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:54:31,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:54:31,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:54:31,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:54:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:54:31,068 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-24 22:54:31,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:54:31,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343979266] [2020-10-24 22:54:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:54:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:54:31,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:54:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:54:31,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:54:31,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:54:31,283 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:54:31,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:54:31,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:54:31 BoogieIcfgContainer [2020-10-24 22:54:31,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:54:31,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:54:31,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:54:31,329 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:54:31,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:54:30" (3/4) ... [2020-10-24 22:54:31,335 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:54:31,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:54:31,341 INFO L168 Benchmark]: Toolchain (without parser) took 1147.20 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.3 MB in the beginning and 31.9 MB in the end (delta: -12.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:54:31,344 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 33.6 MB. Free memory was 16.3 MB in the beginning and 16.3 MB in the end (delta: 24.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:54:31,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.77 ms. Allocated memory is still 41.9 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: -35.8 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.05 ms. Allocated memory is still 41.9 MB. Free memory was 18.7 MB in the beginning and 17.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:54:31,350 INFO L168 Benchmark]: Boogie Preprocessor took 29.67 ms. Allocated memory is still 41.9 MB. Free memory was 17.3 MB in the beginning and 26.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,351 INFO L168 Benchmark]: RCFGBuilder took 352.32 ms. Allocated memory is still 41.9 MB. Free memory was 26.1 MB in the beginning and 25.8 MB in the end (delta: 319.1 kB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,353 INFO L168 Benchmark]: TraceAbstraction took 397.98 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 25.3 MB in the beginning and 32.1 MB in the end (delta: -6.9 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:54:31,355 INFO L168 Benchmark]: Witness Printer took 6.69 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 31.9 MB in the end (delta: 255.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:54:31,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 33.6 MB. Free memory was 16.3 MB in the beginning and 16.3 MB in the end (delta: 24.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.77 ms. Allocated memory is still 41.9 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: -35.8 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.05 ms. Allocated memory is still 41.9 MB. Free memory was 18.7 MB in the beginning and 17.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.67 ms. Allocated memory is still 41.9 MB. Free memory was 17.3 MB in the beginning and 26.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 352.32 ms. Allocated memory is still 41.9 MB. Free memory was 26.1 MB in the beginning and 25.8 MB in the end (delta: 319.1 kB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 397.98 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 25.3 MB in the beginning and 32.1 MB in the end (delta: -6.9 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.69 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 31.9 MB in the end (delta: 255.7 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 someBinaryFLOATComparisonOperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Float_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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:54:34,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:54:34,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:54:34,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:54:34,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:54:34,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:54:34,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:54:34,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:54:34,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:54:34,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:54:34,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:54:34,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:54:34,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:54:34,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:54:34,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:54:34,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:54:34,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:54:34,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:54:34,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:54:34,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:54:34,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:54:34,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:54:34,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:54:34,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:54:34,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:54:34,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:54:34,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:54:34,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:54:34,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:54:34,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:54:34,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:54:34,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:54:34,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:54:34,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:54:34,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:54:34,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:54:34,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:54:34,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:54:34,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:54:34,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:54:34,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:54:34,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:54:34,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:54:34,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:54:34,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:54:34,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:54:34,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:54:34,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:54:34,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:54:34,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:54:34,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:54:34,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:54:34,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:54:34,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:54:34,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:54:34,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:54:34,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:54:34,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:54:34,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:54:34,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:54:34,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:54:34,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:54:34,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:54:34,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:54:34,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:54:34,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:54:34,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:54:34,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:54:34,211 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:54:34,212 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:54:34,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:54:34,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:54:34,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:54:34,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2020-10-24 22:54:34,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:54:34,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:54:34,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:54:34,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:54:34,736 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:54:34,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-10-24 22:54:34,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef0a0cbe8/b8327129ab394133bcb852abbf3025d7/FLAG7e1e3b1e9 [2020-10-24 22:54:35,581 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:54:35,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-10-24 22:54:35,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef0a0cbe8/b8327129ab394133bcb852abbf3025d7/FLAG7e1e3b1e9 [2020-10-24 22:54:35,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef0a0cbe8/b8327129ab394133bcb852abbf3025d7 [2020-10-24 22:54:35,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:54:35,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:54:35,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:54:35,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:54:35,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:54:35,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:54:35" (1/1) ... [2020-10-24 22:54:35,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2f94a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:35, skipping insertion in model container [2020-10-24 22:54:35,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:54:35" (1/1) ... [2020-10-24 22:54:35,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:54:35,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:54:36,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:54:36,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:54:36,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:54:36,183 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:54:36,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36 WrapperNode [2020-10-24 22:54:36,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:54:36,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:54:36,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:54:36,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:54:36,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:54:36,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:54:36,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:54:36,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:54:36,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (1/1) ... [2020-10-24 22:54:36,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:54:36,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:54:36,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:54:36,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:54:36,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (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 22:54:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:54:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:54:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:54:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:54:37,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:54:37,451 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 22:54:37,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:54:37 BoogieIcfgContainer [2020-10-24 22:54:37,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:54:37,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:54:37,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:54:37,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:54:37,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:54:35" (1/3) ... [2020-10-24 22:54:37,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ca89b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:54:37, skipping insertion in model container [2020-10-24 22:54:37,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:54:36" (2/3) ... [2020-10-24 22:54:37,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ca89b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:54:37, skipping insertion in model container [2020-10-24 22:54:37,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:54:37" (3/3) ... [2020-10-24 22:54:37,469 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-10-24 22:54:37,482 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:54:37,486 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:54:37,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:54:37,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:54:37,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:54:37,528 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:54:37,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:54:37,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:54:37,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:54:37,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:54:37,529 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:54:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:54:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:54:37,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:54:37,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:54:37,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:54:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:54:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-24 22:54:37,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:54:37,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106696153] [2020-10-24 22:54:37,570 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 22:54:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:54:37,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 22:54:37,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:54:38,299 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:54:38,308 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 22:54:38,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:54:38,692 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 22:54:38,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106696153] [2020-10-24 22:54:38,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:54:38,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 22:54:38,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071581800] [2020-10-24 22:54:38,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 22:54:38,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:54:38,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 22:54:38,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 22:54:38,721 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-10-24 22:54:40,010 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:54:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:54:40,824 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-10-24 22:54:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 22:54:40,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-24 22:54:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:54:40,833 INFO L225 Difference]: With dead ends: 26 [2020-10-24 22:54:40,834 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 22:54:40,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-24 22:54:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 22:54:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 22:54:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 22:54:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-24 22:54:40,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-24 22:54:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:54:40,877 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-24 22:54:40,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 22:54:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-24 22:54:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 22:54:40,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:54:40,879 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:54:41,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:54:41,092 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:54:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:54:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 1 times [2020-10-24 22:54:41,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:54:41,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925627884] [2020-10-24 22:54:41,096 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 22:54:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:54:41,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 22:54:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:54:41,867 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 22:54:43,011 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:54:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:54:43,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:54:46,182 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-24 22:54:50,099 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) 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 22:54:51,228 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 22:54:51,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925627884] [2020-10-24 22:54:51,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:54:51,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-24 22:54:51,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59861534] [2020-10-24 22:54:51,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 22:54:51,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:54:51,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 22:54:51,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2020-10-24 22:54:51,243 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2020-10-24 22:54:59,489 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-10-24 22:55:00,996 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-10-24 22:55:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:55:04,461 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-24 22:55:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 22:55:04,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-10-24 22:55:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:55:04,494 INFO L225 Difference]: With dead ends: 19 [2020-10-24 22:55:04,494 INFO L226 Difference]: Without dead ends: 13 [2020-10-24 22:55:04,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=46, Invalid=89, Unknown=1, NotChecked=20, Total=156 [2020-10-24 22:55:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-24 22:55:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-24 22:55:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-24 22:55:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-24 22:55:04,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-24 22:55:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:55:04,501 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-24 22:55:04,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 22:55:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-24 22:55:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 22:55:04,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:55:04,502 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:55:04,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:55:04,712 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:55:04,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:55:04,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1020395060, now seen corresponding path program 2 times [2020-10-24 22:55:04,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:55:04,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133487338] [2020-10-24 22:55:04,715 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 22:55:05,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 22:55:05,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:55:05,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 22:55:05,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:55:05,621 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 22:55:09,314 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:55:11,403 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-10-24 22:55:13,483 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0))) is different from true [2020-10-24 22:55:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2020-10-24 22:55:13,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:55:23,301 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 11 [2020-10-24 22:55:25,391 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:55:29,400 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:55:31,496 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-10-24 22:55:33,623 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-10-24 22:55:37,739 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:55:39,860 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:55:39,862 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 22:55:39,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133487338] [2020-10-24 22:55:39,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:55:39,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2020-10-24 22:55:39,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461173477] [2020-10-24 22:55:39,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 22:55:39,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:55:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 22:55:39,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=69, Unknown=9, NotChecked=126, Total=240 [2020-10-24 22:55:39,865 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 16 states. [2020-10-24 22:55:44,009 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-10-24 22:55:46,139 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-10-24 22:56:04,424 WARN L193 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2020-10-24 22:56:28,445 WARN L193 SmtUtils]: Spent 23.21 s on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2020-10-24 22:57:06,588 WARN L193 SmtUtils]: Spent 33.76 s on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2020-10-24 22:57:18,430 WARN L193 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-24 22:57:25,506 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification that was a NOOP. DAG size: 16 [2020-10-24 22:57:39,891 WARN L193 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-24 22:57:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:57:47,197 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-24 22:57:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 22:57:47,232 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-24 22:57:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:57:47,232 INFO L225 Difference]: With dead ends: 24 [2020-10-24 22:57:47,233 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 22:57:47,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 145.9s TimeCoverageRelationStatistics Valid=90, Invalid=200, Unknown=14, NotChecked=296, Total=600 [2020-10-24 22:57:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 22:57:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 22:57:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 22:57:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 22:57:47,239 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-10-24 22:57:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:57:47,239 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 22:57:47,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 22:57:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 22:57:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 22:57:47,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:57:47,240 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:57:47,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 22:57:47,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:57:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:57:47,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1246107601, now seen corresponding path program 3 times [2020-10-24 22:57:47,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:57:47,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837905443] [2020-10-24 22:57:47,445 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 22:57:47,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-24 22:57:47,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 22:57:47,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 22:57:47,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:57:50,581 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 10 [2020-10-24 22:58:08,054 WARN L193 SmtUtils]: Spent 12.21 s on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 22:58:10,140 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (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 8 24) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from false [2020-10-24 22:58:10,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 22:58:20,815 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (and (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17)) (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 8 24))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse2 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2020-10-24 22:58:27,051 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2020-10-24 22:58:29,109 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2020-10-24 22:58:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-24 22:58:37,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:58:52,235 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-24 22:58:54,322 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_19 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-10-24 22:58:56,390 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_19 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) 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 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-10-24 22:58:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 12 not checked. [2020-10-24 22:58:56,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837905443] [2020-10-24 22:58:56,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-24 22:58:56,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-10-24 22:58:56,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519173935] [2020-10-24 22:58:56,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 22:58:56,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:58:56,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 22:58:56,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=51, Unknown=10, NotChecked=68, Total=156 [2020-10-24 22:58:56,408 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-10-24 22:59:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:59:02,931 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-24 22:59:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 22:59:02,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-24 22:59:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:59:02,996 INFO L225 Difference]: With dead ends: 16 [2020-10-24 22:59:02,996 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 22:59:02,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=27, Invalid=51, Unknown=10, NotChecked=68, Total=156 [2020-10-24 22:59:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 22:59:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 22:59:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 22:59:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 22:59:02,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-24 22:59:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:59:02,998 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 22:59:02,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 22:59:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 22:59:02,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 22:59:03,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 22:59:03,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 22:59:11,870 WARN L193 SmtUtils]: Spent 8.59 s on a formula simplification that was a NOOP. DAG size: 17 [2020-10-24 22:59:11,876 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 22:59:11,877 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (exists ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (and (not (fp.eq ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_17)) (= ULTIMATE.start_main_~x~0 (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_17 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0)))))) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_main_~x1~0 (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) [2020-10-24 22:59:11,877 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2020-10-24 22:59:11,877 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-24 22:59:11,877 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-24 22:59:11,877 INFO L270 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-10-24 22:59:11,877 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 22:59:11,877 INFO L270 CegarLoopResult]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-10-24 22:59:11,877 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 22:59:11,878 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 22:59:11,878 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-24 22:59:11,878 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-24 22:59:11,878 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-24 22:59:11,878 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-24 22:59:11,887 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:11,889 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,892 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:11,892 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:11,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:11,896 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:11,900 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,902 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:11,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:11,903 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:11,904 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,904 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,904 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,904 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,904 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,905 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:11,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,906 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:11,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:11,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:59:11 BoogieIcfgContainer [2020-10-24 22:59:11,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:59:11,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:59:11,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:59:11,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:59:11,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:54:37" (3/4) ... [2020-10-24 22:59:11,918 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 22:59:11,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-24 22:59:11,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 22:59:11,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 22:59:11,931 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 22:59:11,964 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_ULTIMATE.start_main_~x~0_17 : C_FLOAT :: !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0_17) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_17, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) [2020-10-24 22:59:11,979 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 22:59:11,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:59:11,981 INFO L168 Benchmark]: Toolchain (without parser) took 276086.69 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 20.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:59:11,982 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 37.7 MB. Free memory is still 20.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:59:11,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.65 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 19.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:59:11,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.36 ms. Allocated memory is still 46.1 MB. Free memory was 19.9 MB in the beginning and 30.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:59:11,984 INFO L168 Benchmark]: Boogie Preprocessor took 32.57 ms. Allocated memory is still 46.1 MB. Free memory was 30.4 MB in the beginning and 29.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:59:11,985 INFO L168 Benchmark]: RCFGBuilder took 1186.38 ms. Allocated memory is still 46.1 MB. Free memory was 29.1 MB in the beginning and 30.0 MB in the end (delta: -941.9 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:59:11,985 INFO L168 Benchmark]: TraceAbstraction took 274450.92 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.6 MB in the beginning and 23.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-24 22:59:11,986 INFO L168 Benchmark]: Witness Printer took 66.65 ms. Allocated memory is still 56.6 MB. Free memory was 23.0 MB in the beginning and 20.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:59:11,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 37.7 MB. Free memory is still 20.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.65 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 19.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.36 ms. Allocated memory is still 46.1 MB. Free memory was 19.9 MB in the beginning and 30.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.57 ms. Allocated memory is still 46.1 MB. Free memory was 30.4 MB in the beginning and 29.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1186.38 ms. Allocated memory is still 46.1 MB. Free memory was 29.1 MB in the beginning and 30.0 MB in the end (delta: -941.9 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 274450.92 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.6 MB in the beginning and 23.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.65 ms. Allocated memory is still 56.6 MB. Free memory was 23.0 MB in the beginning and 20.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2020-10-24 22:59:12,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:12,006 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:12,007 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2020-10-24 22:59:12,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:12,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:12,008 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:12,008 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,008 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,008 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:12,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_17,QUANTIFIED] [2020-10-24 22:59:12,010 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:12,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((\exists v_ULTIMATE.start_main_~x~0_17 : C_FLOAT :: !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0_17) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_17, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) - InvariantResult [Line: 18]: Loop Invariant [2020-10-24 22:59:12,011 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:12,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 22:59:12,012 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 22:59:12,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 265.6s, OverallIterations: 4, TraceHistogramMax: 7, AutomataDifference: 149.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 36 SDslu, 48 SDs, 0 SdLazy, 79 SolverSat, 20 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 27.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 214.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 429 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 114.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 13 QuantifiedInterpolants, 13887 SizeOfPredicates, 18 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 43/82 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 proved your program to be correct! Received shutdown request...