./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 678e0110 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 0.1.24-678e011 [2019-11-19 21:13:50,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:13:50,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:13:50,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:13:50,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:13:50,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:13:50,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:13:50,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:13:50,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:13:50,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:13:50,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:13:50,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:13:50,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:13:50,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:13:50,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:13:50,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:13:50,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:13:50,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:13:50,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:13:50,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:13:50,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:13:50,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:13:50,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:13:50,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:13:50,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:13:50,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:13:50,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:13:50,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:13:50,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:13:50,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:13:50,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:13:50,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:13:50,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:13:50,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:13:50,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:13:50,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:13:50,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:13:50,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:13:50,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:13:50,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:13:50,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:13:50,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:13:50,953 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:13:50,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:13:50,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:13:50,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:13:50,955 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:13:50,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:13:50,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:13:50,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:13:50,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:13:50,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:13:50,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:13:50,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:13:50,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:13:50,962 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:13:50,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:13:50,962 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:13:50,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:13:50,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:13:50,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:13:50,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:13:50,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:13:50,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:13:50,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:13:50,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:13:50,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:13:50,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:13:50,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:13:50,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:13:50,965 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 [2019-11-19 21:13:51,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:13:51,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:13:51,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:13:51,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:13:51,287 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:13:51,288 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-19 21:13:51,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf7bec5b/cdf8bc68a5d54cbaba2705ad596c887c/FLAGe5589b39b [2019-11-19 21:13:51,842 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:13:51,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-19 21:13:51,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf7bec5b/cdf8bc68a5d54cbaba2705ad596c887c/FLAGe5589b39b [2019-11-19 21:13:52,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf7bec5b/cdf8bc68a5d54cbaba2705ad596c887c [2019-11-19 21:13:52,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:13:52,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:13:52,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:52,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:13:52,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:13:52,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9b7677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52, skipping insertion in model container [2019-11-19 21:13:52,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,232 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:13:52,254 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:13:52,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:52,499 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:13:52,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:52,546 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:13:52,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52 WrapperNode [2019-11-19 21:13:52,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:52,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:52,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:13:52,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:13:52,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:52,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:13:52,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:13:52,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:13:52,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (1/1) ... [2019-11-19 21:13:52,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:13:52,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:13:52,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:13:52,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:13:52,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (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 [2019-11-19 21:13:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:13:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:13:52,929 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:13:52,930 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 21:13:52,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:52 BoogieIcfgContainer [2019-11-19 21:13:52,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:13:52,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:13:52,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:13:52,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:13:52,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:52" (1/3) ... [2019-11-19 21:13:52,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1b1585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:52, skipping insertion in model container [2019-11-19 21:13:52,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:52" (2/3) ... [2019-11-19 21:13:52,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1b1585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:13:52, skipping insertion in model container [2019-11-19 21:13:52,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:52" (3/3) ... [2019-11-19 21:13:52,945 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-19 21:13:52,956 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:13:52,964 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:13:52,975 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:13:53,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:13:53,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:13:53,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:13:53,004 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:13:53,004 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:13:53,004 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:13:53,004 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:13:53,005 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:13:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-19 21:13:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 21:13:53,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:53,024 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 21:13:53,024 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:53,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:53,029 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-19 21:13:53,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:53,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10206726] [2019-11-19 21:13:53,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:13:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:13:53,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10206726] [2019-11-19 21:13:53,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:13:53,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:13:53,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345546666] [2019-11-19 21:13:53,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:13:53,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:13:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:13:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:13:53,186 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-19 21:13:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:13:53,206 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-19 21:13:53,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:13:53,208 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-19 21:13:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:13:53,219 INFO L225 Difference]: With dead ends: 22 [2019-11-19 21:13:53,220 INFO L226 Difference]: Without dead ends: 10 [2019-11-19 21:13:53,224 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 [2019-11-19 21:13:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-19 21:13:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-19 21:13:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-19 21:13:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-19 21:13:53,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-19 21:13:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:13:53,270 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-19 21:13:53,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:13:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-19 21:13:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:13:53,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:13:53,271 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:13:53,272 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:13:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:13:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-19 21:13:53,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:13:53,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213658372] [2019-11-19 21:13:53,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:13:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:13:53,389 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:13:53,390 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:13:53,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:13:53 BoogieIcfgContainer [2019-11-19 21:13:53,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:13:53,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:13:53,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:13:53,426 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:13:53,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:13:52" (3/4) ... [2019-11-19 21:13:53,432 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 21:13:53,433 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:13:53,436 INFO L168 Benchmark]: Toolchain (without parser) took 1219.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:13:53,437 INFO L168 Benchmark]: CDTParser took 0.31 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. [2019-11-19 21:13:53,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.83 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 938.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:53,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -207.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:53,444 INFO L168 Benchmark]: Boogie Preprocessor took 24.30 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. [2019-11-19 21:13:53,446 INFO L168 Benchmark]: RCFGBuilder took 255.00 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:53,447 INFO L168 Benchmark]: TraceAbstraction took 490.36 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:13:53,448 INFO L168 Benchmark]: Witness Printer took 6.92 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. [2019-11-19 21:13:53,464 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 331.83 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 938.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 103.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -207.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.30 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 255.00 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 490.36 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.92 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.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: 0.4s, 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 0.1.24-678e011 [2019-11-19 21:13:55,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:13:55,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:13:55,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:13:55,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:13:55,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:13:55,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:13:55,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:13:55,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:13:55,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:13:55,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:13:55,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:13:55,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:13:55,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:13:55,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:13:55,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:13:55,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:13:55,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:13:55,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:13:55,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:13:55,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:13:55,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:13:55,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:13:55,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:13:55,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:13:55,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:13:55,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:13:55,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:13:55,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:13:55,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:13:55,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:13:55,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:13:55,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:13:55,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:13:55,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:13:55,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:13:55,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:13:55,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:13:55,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:13:55,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:13:55,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:13:55,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-19 21:13:55,663 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:13:55,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:13:55,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:13:55,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:13:55,666 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:13:55,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:13:55,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:13:55,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:13:55,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:13:55,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:13:55,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:13:55,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:13:55,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 21:13:55,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 21:13:55,670 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:13:55,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:13:55,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:13:55,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:13:55,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:13:55,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:13:55,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:13:55,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:13:55,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:13:55,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:13:55,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:13:55,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:13:55,675 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 21:13:55,675 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 21:13:55,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:13:55,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 21:13:55,676 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 [2019-11-19 21:13:56,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:13:56,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:13:56,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:13:56,023 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:13:56,024 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:13:56,024 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-19 21:13:56,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455993058/39fb4445fdd04c14a516ae8fc5a07c21/FLAGb2a5b72e3 [2019-11-19 21:13:56,518 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:13:56,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-19 21:13:56,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455993058/39fb4445fdd04c14a516ae8fc5a07c21/FLAGb2a5b72e3 [2019-11-19 21:13:56,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455993058/39fb4445fdd04c14a516ae8fc5a07c21 [2019-11-19 21:13:56,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:13:56,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:13:56,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:56,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:13:56,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:13:56,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32753c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:56, skipping insertion in model container [2019-11-19 21:13:56,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:13:56" (1/1) ... [2019-11-19 21:13:56,994 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:13:57,022 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:13:57,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:57,283 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:13:57,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:13:57,324 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:13:57,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57 WrapperNode [2019-11-19 21:13:57,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:13:57,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:57,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:13:57,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:13:57,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:13:57,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:13:57,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:13:57,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:13:57,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (1/1) ... [2019-11-19 21:13:57,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:13:57,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:13:57,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:13:57,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:13:57,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (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 [2019-11-19 21:13:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:13:57,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:14:02,730 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:14:02,730 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 21:14:02,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:14:02 BoogieIcfgContainer [2019-11-19 21:14:02,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:14:02,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:14:02,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:14:02,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:14:02,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:13:56" (1/3) ... [2019-11-19 21:14:02,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a4918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:14:02, skipping insertion in model container [2019-11-19 21:14:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:13:57" (2/3) ... [2019-11-19 21:14:02,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a4918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:14:02, skipping insertion in model container [2019-11-19 21:14:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:14:02" (3/3) ... [2019-11-19 21:14:02,741 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-19 21:14:02,752 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:14:02,759 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:14:02,771 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:14:02,794 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:14:02,795 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:14:02,795 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:14:02,795 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:14:02,796 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:14:02,796 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:14:02,797 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:14:02,797 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:14:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-19 21:14:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 21:14:02,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:14:02,821 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 21:14:02,821 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:14:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:14:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-19 21:14:02,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:14:02,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976807673] [2019-11-19 21:14:02,842 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 [2019-11-19 21:14:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:14:02,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-19 21:14:02,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 21:14:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:14:02,969 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 21:14:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:14:02,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976807673] [2019-11-19 21:14:02,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:14:02,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 21:14:02,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139784040] [2019-11-19 21:14:02,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:14:02,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 21:14:02,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:14:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:14:02,995 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-19 21:14:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:14:03,013 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-19 21:14:03,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:14:03,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-19 21:14:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:14:03,025 INFO L225 Difference]: With dead ends: 22 [2019-11-19 21:14:03,025 INFO L226 Difference]: Without dead ends: 10 [2019-11-19 21:14:03,028 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 [2019-11-19 21:14:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-19 21:14:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-19 21:14:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-19 21:14:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-19 21:14:03,065 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-19 21:14:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:14:03,065 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-19 21:14:03,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:14:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-19 21:14:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:14:03,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:14:03,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:14:03,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-19 21:14:03,282 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:14:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:14:03,282 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-19 21:14:03,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 21:14:03,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624439598] [2019-11-19 21:14:03,283 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 [2019-11-19 21:14:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:14:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:14:04,996 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 21:14:04,997 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:14:05,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-19 21:14:05,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:14:05 BoogieIcfgContainer [2019-11-19 21:14:05,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:14:05,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:14:05,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:14:05,242 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:14:05,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:14:02" (3/4) ... [2019-11-19 21:14:05,244 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 21:14:05,296 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:14:05,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:14:05,299 INFO L168 Benchmark]: Toolchain (without parser) took 8326.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -107.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:05,300 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. [2019-11-19 21:14:05,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.16 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 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. [2019-11-19 21:14:05,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:05,307 INFO L168 Benchmark]: Boogie Preprocessor took 37.27 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:05,310 INFO L168 Benchmark]: RCFGBuilder took 5252.11 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:05,311 INFO L168 Benchmark]: TraceAbstraction took 2508.41 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: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:05,311 INFO L168 Benchmark]: Witness Printer took 54.76 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. [2019-11-19 21:14:05,318 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 350.16 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 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 116.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.27 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 5252.11 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2508.41 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: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. * Witness Printer took 54.76 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.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: 2.4s, 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, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 16 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...