./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-cbmc-regression/float22.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08947af3b6f9b8a272faa540a059213a9b1de888 .................................................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-cbmc-regression/float22.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08947af3b6f9b8a272faa540a059213a9b1de888 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:39:01,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:39:01,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:39:01,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:39:01,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:39:01,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:39:01,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:39:01,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:39:01,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:39:01,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:39:01,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:39:01,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:39:01,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:39:01,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:39:01,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:39:01,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:39:01,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:39:01,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:39:01,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:39:01,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:39:01,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:39:01,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:39:01,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:39:01,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:39:01,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:39:01,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:39:01,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:39:01,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:39:01,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:39:01,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:39:01,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:39:01,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:39:01,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:39:01,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:39:01,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:39:01,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:39:01,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:39:01,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:39:01,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:39:01,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:39:01,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:39:01,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:39:01,565 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:39:01,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:39:01,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:39:01,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:39:01,568 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:39:01,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:39:01,568 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:39:01,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:39:01,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:39:01,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:39:01,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:39:01,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:39:01,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:39:01,572 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:39:01,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:39:01,572 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:39:01,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:39:01,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:39:01,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:39:01,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:39:01,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:39:01,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:39:01,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:39:01,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:39:01,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:39:01,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:39:01,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:39:01,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:39:01,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:39:01,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-11-28 16:39:01,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:39:01,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:39:01,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:39:01,912 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:39:01,912 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:39:01,913 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-28 16:39:01,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b128fd0c0/d2075647742b4c75bd4f141335fa944e/FLAG1a633fdae [2019-11-28 16:39:02,451 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:39:02,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-28 16:39:02,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b128fd0c0/d2075647742b4c75bd4f141335fa944e/FLAG1a633fdae [2019-11-28 16:39:02,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b128fd0c0/d2075647742b4c75bd4f141335fa944e [2019-11-28 16:39:02,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:39:02,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:39:02,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:39:02,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:39:02,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:39:02,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:02" (1/1) ... [2019-11-28 16:39:02,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e727e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:02, skipping insertion in model container [2019-11-28 16:39:02,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:02" (1/1) ... [2019-11-28 16:39:02,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:39:02,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:39:03,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:39:03,066 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:39:03,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:39:03,205 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:39:03,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03 WrapperNode [2019-11-28 16:39:03,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:39:03,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:39:03,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:39:03,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:39:03,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:39:03,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:39:03,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:39:03,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:39:03,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (1/1) ... [2019-11-28 16:39:03,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:39:03,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:39:03,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:39:03,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:39:03,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (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 [2019-11-28 16:39:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:39:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:39:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:39:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:39:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:39:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:39:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:39:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:39:03,970 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:39:03,971 INFO L287 CfgBuilder]: Removed 26 assume(true) statements. [2019-11-28 16:39:03,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:03 BoogieIcfgContainer [2019-11-28 16:39:03,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:39:03,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:39:03,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:39:03,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:39:03,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:39:02" (1/3) ... [2019-11-28 16:39:03,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f6a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:39:03, skipping insertion in model container [2019-11-28 16:39:03,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:03" (2/3) ... [2019-11-28 16:39:03,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f6a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:39:03, skipping insertion in model container [2019-11-28 16:39:03,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:03" (3/3) ... [2019-11-28 16:39:03,982 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-11-28 16:39:03,992 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:39:04,000 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 16:39:04,013 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 16:39:04,039 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:39:04,039 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:39:04,039 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:39:04,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:39:04,040 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:39:04,040 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:39:04,040 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:39:04,041 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:39:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:39:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 16:39:04,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:39:04,065 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 16:39:04,066 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:39:04,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:39:04,072 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-11-28 16:39:04,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:39:04,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591621886] [2019-11-28 16:39:04,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:39:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:39:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:39:04,348 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:39:04,349 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:39:04,360 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,361 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,362 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,362 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,362 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,363 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,363 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,364 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,364 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,365 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,365 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,366 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,366 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,366 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,367 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-28 16:39:04,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-28 16:39:04,377 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-28 16:39:04,377 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-28 16:39:04,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-28 16:39:04,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-28 16:39:04,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-28 16:39:04,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-28 16:39:04,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-28 16:39:04,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-28 16:39:04,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-28 16:39:04,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-28 16:39:04,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-28 16:39:04,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:39:04 BoogieIcfgContainer [2019-11-28 16:39:04,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:39:04,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:39:04,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:39:04,395 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:39:04,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:03" (3/4) ... [2019-11-28 16:39:04,400 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:39:04,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:39:04,405 INFO L168 Benchmark]: Toolchain (without parser) took 1568.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -105.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:04,406 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:04,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:04,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:04,410 INFO L168 Benchmark]: Boogie Preprocessor took 46.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:04,411 INFO L168 Benchmark]: RCFGBuilder took 664.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:04,413 INFO L168 Benchmark]: TraceAbstraction took 420.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:04,414 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:04,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 370.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 664.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 420.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 133]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 119. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L133] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L133] __VERIFIER_error() VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 6 NumberOfCodeBlocks, 6 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, 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 0.1.25-f470102 [2019-11-28 16:39:06,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:39:06,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:39:06,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:39:06,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:39:06,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:39:06,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:39:06,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:39:06,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:39:06,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:39:06,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:39:06,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:39:06,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:39:06,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:39:06,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:39:06,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:39:06,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:39:06,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:39:06,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:39:06,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:39:06,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:39:06,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:39:06,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:39:06,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:39:06,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:39:06,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:39:06,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:39:06,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:39:06,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:39:06,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:39:06,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:39:06,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:39:06,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:39:06,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:39:06,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:39:06,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:39:06,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:39:06,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:39:06,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:39:06,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:39:06,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:39:06,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:39:06,560 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:39:06,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:39:06,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:39:06,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:39:06,563 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:39:06,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:39:06,563 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:39:06,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:39:06,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:39:06,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:39:06,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:39:06,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:39:06,565 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:39:06,565 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:39:06,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:39:06,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:39:06,566 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:39:06,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:39:06,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:39:06,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:39:06,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:39:06,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:39:06,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:39:06,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:39:06,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:39:06,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:39:06,569 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:39:06,569 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:39:06,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:39:06,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:39:06,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:39:06,571 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-11-28 16:39:06,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:39:06,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:39:06,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:39:06,910 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:39:06,911 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:39:06,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-28 16:39:06,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb731a05f/55d006867f264fd4bfea1e1ba30899f6/FLAG9e82d3bb2 [2019-11-28 16:39:07,488 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:39:07,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-28 16:39:07,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb731a05f/55d006867f264fd4bfea1e1ba30899f6/FLAG9e82d3bb2 [2019-11-28 16:39:07,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb731a05f/55d006867f264fd4bfea1e1ba30899f6 [2019-11-28 16:39:07,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:39:07,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:39:07,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:39:07,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:39:07,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:39:07,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:07" (1/1) ... [2019-11-28 16:39:07,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c928a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:07, skipping insertion in model container [2019-11-28 16:39:07,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:07" (1/1) ... [2019-11-28 16:39:07,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:39:07,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:39:08,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:39:08,105 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:39:08,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:39:08,247 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:39:08,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08 WrapperNode [2019-11-28 16:39:08,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:39:08,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:39:08,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:39:08,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:39:08,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:39:08,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:39:08,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:39:08,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:39:08,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (1/1) ... [2019-11-28 16:39:08,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:39:08,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:39:08,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:39:08,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:39:08,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (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 [2019-11-28 16:39:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:39:08,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-28 16:39:08,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:39:08,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:39:08,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:39:08,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:39:08,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:39:08,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:39:09,054 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:39:09,054 INFO L287 CfgBuilder]: Removed 26 assume(true) statements. [2019-11-28 16:39:09,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:09 BoogieIcfgContainer [2019-11-28 16:39:09,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:39:09,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:39:09,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:39:09,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:39:09,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:39:07" (1/3) ... [2019-11-28 16:39:09,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119f6210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:39:09, skipping insertion in model container [2019-11-28 16:39:09,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:08" (2/3) ... [2019-11-28 16:39:09,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119f6210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:39:09, skipping insertion in model container [2019-11-28 16:39:09,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:09" (3/3) ... [2019-11-28 16:39:09,063 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-11-28 16:39:09,071 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:39:09,077 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 16:39:09,089 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 16:39:09,110 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:39:09,110 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:39:09,110 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:39:09,110 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:39:09,111 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:39:09,111 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:39:09,111 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:39:09,111 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:39:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-28 16:39:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 16:39:09,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:39:09,132 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 16:39:09,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:39:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:39:09,138 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-11-28 16:39:09,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:39:09,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443611390] [2019-11-28 16:39:09,150 INFO L94 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 [2019-11-28 16:39:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:39:09,331 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 16:39:09,339 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:39:09,562 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2019-11-28 16:39:09,564 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-11-28 16:39:09,565 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-11-28 16:39:09,568 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:09,749 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-11-28 16:39:09,750 INFO L614 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-11-28 16:39:09,776 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-11-28 16:39:09,777 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:09,816 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:09,820 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:09,821 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-11-28 16:39:10,005 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:10,006 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-11-28 16:39:10,008 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:10,193 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-28 16:39:10,194 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:10,478 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-11-28 16:39:10,479 INFO L343 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-11-28 16:39:10,480 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-11-28 16:39:10,483 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:10,792 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-11-28 16:39:10,794 INFO L614 ElimStorePlain]: treesize reduction 44, result has 75.0 percent of original size [2019-11-28 16:39:10,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:10,803 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:10,804 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:164, output treesize:119 [2019-11-28 16:39:10,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:10,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:10,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 16:39:11,009 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:11,010 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 73 [2019-11-28 16:39:11,012 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:11,019 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 16:39:11,027 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 40 [2019-11-28 16:39:11,028 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:11,088 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-11-28 16:39:11,089 INFO L534 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:11,090 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:264, output treesize:25 [2019-11-28 16:39:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:39:11,120 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:39:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:39:15,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443611390] [2019-11-28 16:39:15,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:39:15,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-28 16:39:15,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164335587] [2019-11-28 16:39:15,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 16:39:15,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:39:15,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 16:39:15,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2019-11-28 16:39:15,738 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 8 states. [2019-11-28 16:39:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:39:16,293 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-11-28 16:39:16,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:39:16,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2019-11-28 16:39:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:39:16,304 INFO L225 Difference]: With dead ends: 57 [2019-11-28 16:39:16,305 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:39:16,309 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2019-11-28 16:39:16,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:39:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:39:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:39:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-11-28 16:39:16,354 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 6 [2019-11-28 16:39:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:39:16,355 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-11-28 16:39:16,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 16:39:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-11-28 16:39:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:39:16,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:39:16,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:39:16,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:39:16,560 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:39:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:39:16,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2061469933, now seen corresponding path program 1 times [2019-11-28 16:39:16,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:39:16,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812880851] [2019-11-28 16:39:16,564 INFO L94 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 [2019-11-28 16:39:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:39:16,817 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-28 16:39:16,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:39:16,830 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-11-28 16:39:16,846 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:16,848 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:16,848 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:16,850 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:16,851 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:16,851 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-11-28 16:39:16,962 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-11-28 16:39:16,963 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-11-28 16:39:16,964 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:17,119 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-11-28 16:39:17,120 INFO L614 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-11-28 16:39:17,140 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-11-28 16:39:17,141 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:17,165 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:17,166 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:17,167 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-11-28 16:39:17,305 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:17,306 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-11-28 16:39:17,307 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:17,470 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-11-28 16:39:17,470 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:17,728 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-11-28 16:39:17,730 INFO L343 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-11-28 16:39:17,730 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-11-28 16:39:17,732 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:18,038 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-11-28 16:39:18,039 INFO L614 ElimStorePlain]: treesize reduction 44, result has 74.0 percent of original size [2019-11-28 16:39:18,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:18,044 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:18,044 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:157, output treesize:112 [2019-11-28 16:39:18,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:18,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:18,129 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 16:39:18,158 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 42 [2019-11-28 16:39:18,160 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:18,167 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 16:39:18,205 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:18,206 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 75 [2019-11-28 16:39:18,208 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:18,267 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-11-28 16:39:18,267 INFO L534 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:18,268 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:260, output treesize:25 [2019-11-28 16:39:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:39:18,316 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:39:23,848 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-28 16:39:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:39:23,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812880851] [2019-11-28 16:39:23,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:39:23,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-28 16:39:23,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774253713] [2019-11-28 16:39:23,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 16:39:23,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:39:23,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 16:39:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2019-11-28 16:39:23,877 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 9 states. [2019-11-28 16:39:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:39:24,865 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-11-28 16:39:24,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:39:24,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-28 16:39:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:39:24,869 INFO L225 Difference]: With dead ends: 25 [2019-11-28 16:39:24,869 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 16:39:24,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2019-11-28 16:39:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 16:39:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 16:39:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 16:39:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-28 16:39:24,879 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 11 [2019-11-28 16:39:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:39:24,880 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-28 16:39:24,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 16:39:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-28 16:39:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 16:39:24,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:39:24,881 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:39:25,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:39:25,094 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:39:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:39:25,095 INFO L82 PathProgramCache]: Analyzing trace with hash -2079313263, now seen corresponding path program 1 times [2019-11-28 16:39:25,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:39:25,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549919896] [2019-11-28 16:39:25,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-28 16:39:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:39:25,609 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-28 16:39:25,612 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:39:25,627 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-11-28 16:39:25,630 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:25,632 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:25,632 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:25,634 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:25,635 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:25,635 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-11-28 16:39:25,734 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-11-28 16:39:25,734 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-11-28 16:39:25,735 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:25,787 INFO L614 ElimStorePlain]: treesize reduction 36, result has 35.7 percent of original size [2019-11-28 16:39:25,788 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:25,788 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:20 [2019-11-28 16:39:25,975 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-28 16:39:25,976 INFO L343 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-11-28 16:39:25,977 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-11-28 16:39:25,979 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:26,056 INFO L614 ElimStorePlain]: treesize reduction 50, result has 33.3 percent of original size [2019-11-28 16:39:26,057 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:26,057 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:25 [2019-11-28 16:39:26,268 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-28 16:39:26,269 INFO L343 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-11-28 16:39:26,270 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-11-28 16:39:26,272 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:26,440 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-11-28 16:39:26,440 INFO L614 ElimStorePlain]: treesize reduction 50, result has 55.8 percent of original size [2019-11-28 16:39:26,458 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-11-28 16:39:26,459 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:26,487 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:26,488 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:26,489 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:73, output treesize:67 [2019-11-28 16:39:26,625 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:26,626 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-11-28 16:39:26,628 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:26,748 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-28 16:39:26,748 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:26,860 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:26,861 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 122 [2019-11-28 16:39:26,862 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:27,030 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-11-28 16:39:27,030 INFO L614 ElimStorePlain]: treesize reduction 44, result has 70.9 percent of original size [2019-11-28 16:39:27,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:27,033 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-28 16:39:27,034 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:131, output treesize:112 [2019-11-28 16:39:27,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:27,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:27,126 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 16:39:27,160 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 42 [2019-11-28 16:39:27,162 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:27,171 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-28 16:39:27,210 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:27,210 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 73 [2019-11-28 16:39:27,212 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:27,266 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-11-28 16:39:27,267 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 16:39:27,267 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:232, output treesize:25 [2019-11-28 16:39:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:39:27,295 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:39:31,831 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 52 [2019-11-28 16:39:31,854 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:31,855 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 761 treesize of output 686 [2019-11-28 16:39:31,897 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:31,897 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 38 [2019-11-28 16:39:31,898 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 16:39:32,166 WARN L192 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2019-11-28 16:39:32,167 INFO L614 ElimStorePlain]: treesize reduction 523, result has 20.6 percent of original size [2019-11-28 16:39:32,301 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-11-28 16:39:32,302 INFO L343 Elim1Store]: treesize reduction 45, result has 58.3 percent of original size [2019-11-28 16:39:32,302 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 130 [2019-11-28 16:39:32,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,362 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 16:39:32,363 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 128 [2019-11-28 16:39:32,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,418 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:39:32,434 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_76, v_arrayElimCell_77], 3=[v_arrayElimCell_75]} [2019-11-28 16:39:32,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549919896] [2019-11-28 16:39:32,442 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@5394a76 [2019-11-28 16:39:32,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508283271] [2019-11-28 16:39:32,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-28 16:39:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:39:33,243 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-28 16:39:33,244 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@5394a76 [2019-11-28 16:39:33,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415155468] [2019-11-28 16:39:33,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:39:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:39:33,325 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-28 16:39:33,326 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@5394a76 [2019-11-28 16:39:33,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:39:33,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-11-28 16:39:33,326 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-11-28 16:39:33,326 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:39:33,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:39:33,965 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-11-28 16:39:33,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:39:33 BoogieIcfgContainer [2019-11-28 16:39:33,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:39:33,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:39:33,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:39:33,967 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:39:33,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:09" (3/4) ... [2019-11-28 16:39:33,971 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:39:33,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:39:33,973 INFO L168 Benchmark]: Toolchain (without parser) took 26139.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 949.6 MB in the beginning and 884.3 MB in the end (delta: 65.3 MB). Peak memory consumption was 270.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:33,974 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:33,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:33,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:33,981 INFO L168 Benchmark]: Boogie Preprocessor took 71.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:33,982 INFO L168 Benchmark]: RCFGBuilder took 673.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:33,983 INFO L168 Benchmark]: TraceAbstraction took 24909.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 884.3 MB in the end (delta: 206.6 MB). Peak memory consumption was 271.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:39:33,983 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 1.2 GB. Free memory is still 884.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:39:33,987 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 412.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 673.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24909.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.5 MB). Free memory was 1.1 GB in the beginning and 884.3 MB in the end (delta: 206.6 MB). Peak memory consumption was 271.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.27 ms. Allocated memory is still 1.2 GB. Free memory is still 884.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative [L133] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L135] return; [L135] return; [L140] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L142] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L143] f2 = returnsStructure(1) [L145] EXPR f1.ieee.negative [L145] EXPR f2.ieee.negative [L145] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L107] ieee754_float c; [L109] c.ieee.negative = index & 0x1 [L110] c.ieee.exponent = 0 [L111] c.ieee.mantissa = 0 [L113] EXPR c.f [L113] return c.f; [L113] return c.f; [L147] f1.f = returnsField(0) [L107] ieee754_float c; [L109] c.ieee.negative = index & 0x1 [L110] c.ieee.exponent = 0 [L111] c.ieee.mantissa = 0 [L113] EXPR c.f [L113] return c.f; [L113] return c.f; [L148] f2.f = returnsField(1) [L150] EXPR f1.ieee.negative [L150] EXPR f2.ieee.negative [L150] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L150] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Result: UNKNOWN, OverallTime: 24.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 13 SDslu, 118 SDs, 0 SdLazy, 102 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 8 QuantifiedInterpolants, 8370 SizeOfPredicates, 50 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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...