./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/loop-floats-scientific-comp/loop2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46b366fd2d10429563cb722af2c8528eb816bb82 ..................................................................................................................................................................................................................................................................................... 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/loop-floats-scientific-comp/loop2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46b366fd2d10429563cb722af2c8528eb816bb82 ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:51:27,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:27,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:27,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:27,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:27,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:27,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:27,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:27,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:27,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:27,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:27,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:27,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:27,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:27,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:27,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:27,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:27,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:27,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:27,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:27,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:27,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:27,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:27,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:27,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:27,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:27,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:27,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:27,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:27,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:27,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:27,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:27,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:27,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:27,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:27,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:27,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:27,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:27,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:27,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:27,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:27,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:51:27,940 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:27,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:27,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:27,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:27,943 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:27,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:27,944 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:27,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:51:27,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:27,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:27,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:27,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:27,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:27,946 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:27,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:27,947 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:27,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:27,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:27,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:27,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:27,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:27,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:27,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:27,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:27,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:27,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:51:27,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:51:27,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:27,949 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 -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-11-27 23:51:28,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:28,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:28,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:28,295 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:28,296 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:28,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-27 23:51:28,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4319784/34fb536ecf5d4bb5b93120795b4abb4d/FLAG8a696b9eb [2019-11-27 23:51:28,859 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:28,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-27 23:51:28,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4319784/34fb536ecf5d4bb5b93120795b4abb4d/FLAG8a696b9eb [2019-11-27 23:51:29,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4319784/34fb536ecf5d4bb5b93120795b4abb4d [2019-11-27 23:51:29,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:29,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:29,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:29,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:29,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:29,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6eb3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29, skipping insertion in model container [2019-11-27 23:51:29,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:29,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:29,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:29,438 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:29,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:29,468 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:29,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29 WrapperNode [2019-11-27 23:51:29,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:29,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:29,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:29,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:29,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:29,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:29,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:29,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:29,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (1/1) ... [2019-11-27 23:51:29,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:29,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:29,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:29,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:29,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (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 [2019-11-27 23:51:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:29,822 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:29,822 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:51:29,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:29 BoogieIcfgContainer [2019-11-27 23:51:29,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:29,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:29,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:29,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:29,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:29" (1/3) ... [2019-11-27 23:51:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5958a2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:29, skipping insertion in model container [2019-11-27 23:51:29,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:29" (2/3) ... [2019-11-27 23:51:29,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5958a2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:29, skipping insertion in model container [2019-11-27 23:51:29,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:29" (3/3) ... [2019-11-27 23:51:29,834 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-27 23:51:29,844 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:29,852 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:29,865 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:29,900 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:29,900 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:29,901 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:29,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:29,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:29,901 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:29,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:29,902 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:29,915 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-27 23:51:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:51:29,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:29,921 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 23:51:29,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:29,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:29,928 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-27 23:51:29,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:29,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573063432] [2019-11-27 23:51:29,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:30,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573063432] [2019-11-27 23:51:30,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:30,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:51:30,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282425014] [2019-11-27 23:51:30,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:30,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:30,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:30,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:30,050 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-27 23:51:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:30,064 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-27 23:51:30,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:30,065 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-27 23:51:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:30,074 INFO L225 Difference]: With dead ends: 22 [2019-11-27 23:51:30,074 INFO L226 Difference]: Without dead ends: 10 [2019-11-27 23:51:30,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:30,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-27 23:51:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-27 23:51:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-27 23:51:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-27 23:51:30,106 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-27 23:51:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:30,106 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-27 23:51:30,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-27 23:51:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:51:30,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:30,107 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:30,107 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-27 23:51:30,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:30,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928584545] [2019-11-27 23:51:30,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:30,166 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:51:30,166 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:30,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:30 BoogieIcfgContainer [2019-11-27 23:51:30,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:30,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:30,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:30,193 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:30,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:29" (3/4) ... [2019-11-27 23:51:30,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:51:30,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:30,199 INFO L168 Benchmark]: Toolchain (without parser) took 992.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -100.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:30,200 INFO L168 Benchmark]: CDTParser took 0.29 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. [2019-11-27 23:51:30,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.62 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:30,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:30,203 INFO L168 Benchmark]: Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:30,204 INFO L168 Benchmark]: RCFGBuilder took 241.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:30,205 INFO L168 Benchmark]: TraceAbstraction took 366.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:30,205 INFO L168 Benchmark]: Witness Printer took 4.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:30,210 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 262.62 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 366.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.14 ms. Allocated memory is still 1.1 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [pi=314159/100000] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=314159/100000] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=314159/100000] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=314159/100000] [L7] COND TRUE !(cond) VAL [pi=314159/100000] [L7] __VERIFIER_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.24-30f4e4a [2019-11-27 23:51:32,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:32,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:32,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:32,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:32,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:32,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:32,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:32,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:32,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:32,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:32,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:32,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:32,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:32,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:32,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:32,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:32,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:32,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:32,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:32,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:32,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:32,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:32,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:32,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:32,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:32,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:32,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:32,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:32,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:32,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:32,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:32,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:32,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:32,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:32,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:32,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:32,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:32,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:32,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:32,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:32,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:51:32,321 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:32,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:32,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:32,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:32,325 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:32,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:32,326 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:32,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:32,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:32,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:32,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:32,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:32,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:51:32,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:51:32,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:32,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:32,329 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:32,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:32,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:32,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:32,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:32,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:32,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:32,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:32,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:32,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:32,333 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:51:32,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:51:32,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:32,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:51:32,334 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 -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-11-27 23:51:32,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:32,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:32,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:32,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:32,687 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:32,688 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-27 23:51:32,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104b42b41/8f00d9493e65427797ff3d5ae1f88450/FLAG8ba0cff7e [2019-11-27 23:51:33,254 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:33,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-27 23:51:33,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104b42b41/8f00d9493e65427797ff3d5ae1f88450/FLAG8ba0cff7e [2019-11-27 23:51:33,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104b42b41/8f00d9493e65427797ff3d5ae1f88450 [2019-11-27 23:51:33,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:33,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:33,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:33,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:33,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:33,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:33,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60311b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33, skipping insertion in model container [2019-11-27 23:51:33,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:33,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:33,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:33,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:33,898 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:33,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:33,938 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:33,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33 WrapperNode [2019-11-27 23:51:33,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:33,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:33,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:33,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:33,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:34,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:34,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:34,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:34,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (1/1) ... [2019-11-27 23:51:34,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:34,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:34,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:34,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:34,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (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 [2019-11-27 23:51:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:38,383 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:38,383 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:51:38,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:38 BoogieIcfgContainer [2019-11-27 23:51:38,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:38,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:38,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:38,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:38,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:33" (1/3) ... [2019-11-27 23:51:38,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d1a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:38, skipping insertion in model container [2019-11-27 23:51:38,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33" (2/3) ... [2019-11-27 23:51:38,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d1a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:38, skipping insertion in model container [2019-11-27 23:51:38,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:38" (3/3) ... [2019-11-27 23:51:38,391 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-27 23:51:38,399 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:38,406 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:38,418 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:38,442 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:38,443 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:38,443 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:38,443 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:38,444 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:38,444 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:38,444 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:38,444 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-27 23:51:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:51:38,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:38,463 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 23:51:38,463 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:38,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:38,469 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-27 23:51:38,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:38,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380113614] [2019-11-27 23:51:38,481 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 [2019-11-27 23:51:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:38,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:51:38,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:38,647 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:38,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380113614] [2019-11-27 23:51:38,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:38,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:51:38,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572041070] [2019-11-27 23:51:38,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:38,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:38,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:38,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:38,671 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-27 23:51:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:38,685 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-27 23:51:38,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:38,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-27 23:51:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:38,694 INFO L225 Difference]: With dead ends: 22 [2019-11-27 23:51:38,694 INFO L226 Difference]: Without dead ends: 10 [2019-11-27 23:51:38,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-27 23:51:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-27 23:51:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-27 23:51:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-27 23:51:38,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-27 23:51:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:38,734 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-27 23:51:38,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-27 23:51:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:51:38,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:38,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:38,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:51:38,951 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:38,951 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-27 23:51:38,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:38,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935628794] [2019-11-27 23:51:38,953 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 [2019-11-27 23:51:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:40,517 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:51:40,518 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:40,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:51:40,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:40 BoogieIcfgContainer [2019-11-27 23:51:40,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:40,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:40,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:40,751 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:40,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:38" (3/4) ... [2019-11-27 23:51:40,754 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:51:40,807 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:51:40,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:40,810 INFO L168 Benchmark]: Toolchain (without parser) took 7180.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -113.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:40,811 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-27 23:51:40,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:40,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:40,814 INFO L168 Benchmark]: Boogie Preprocessor took 40.62 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. [2019-11-27 23:51:40,815 INFO L168 Benchmark]: RCFGBuilder took 4305.16 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:40,816 INFO L168 Benchmark]: TraceAbstraction took 2365.18 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: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:40,817 INFO L168 Benchmark]: Witness Printer took 57.10 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. [2019-11-27 23:51:40,821 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 308.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 98.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.62 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 4305.16 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: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2365.18 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: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. * Witness Printer took 57.10 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=3.141590118408203] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=3.141590118408203] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [pi=3.141590118408203] [L7] __VERIFIER_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! Received shutdown request...