./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.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/loop1-2.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 264bfe6ed9d94f386b1000d33074dec83a5848c5 ...................................................................................................................................................................................................................................................................... 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/loop1-2.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 264bfe6ed9d94f386b1000d33074dec83a5848c5 .................................................................................................................................................................................................................................................................................... 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 23:51:26,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:26,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:26,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:26,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:26,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:26,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:26,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:26,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:26,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:26,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:26,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:26,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:26,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:26,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:26,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:26,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:26,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:26,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:26,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:26,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:26,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:26,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:26,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:26,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:26,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:26,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:26,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:26,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:26,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:26,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:26,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:26,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:26,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:26,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:26,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:26,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:26,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:26,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:26,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:27,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:27,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:51:27,037 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:27,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:27,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:27,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:27,042 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:27,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:27,043 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:27,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:51:27,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:27,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:27,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:27,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:27,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:27,047 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:27,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:27,048 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:27,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:27,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:27,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:27,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:27,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:27,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:27,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:27,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:27,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:27,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:51:27,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:51:27,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:27,052 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 -> 264bfe6ed9d94f386b1000d33074dec83a5848c5 [2019-11-27 23:51:27,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:27,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:27,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:27,379 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:27,379 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:27,380 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-27 23:51:27,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9d61e9f/78940440a21848428db5d2e32d0c9861/FLAG6ed3c2890 [2019-11-27 23:51:27,900 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:27,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-27 23:51:27,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9d61e9f/78940440a21848428db5d2e32d0c9861/FLAG6ed3c2890 [2019-11-27 23:51:28,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9d61e9f/78940440a21848428db5d2e32d0c9861 [2019-11-27 23:51:28,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:28,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:28,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:28,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:28,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:28,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b8413c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28, skipping insertion in model container [2019-11-27 23:51:28,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:28,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:28,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:28,618 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:28,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:28,655 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:28,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28 WrapperNode [2019-11-27 23:51:28,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:28,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:28,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:28,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:28,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:28,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:28,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:28,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:28,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (1/1) ... [2019-11-27 23:51:28,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:28,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:28,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:28,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:28,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (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 23:51:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:28,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:29,014 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:29,015 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:51:29,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:29 BoogieIcfgContainer [2019-11-27 23:51:29,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:29,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:29,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:29,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:29,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:28" (1/3) ... [2019-11-27 23:51:29,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1355a8 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 23:51:29,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:28" (2/3) ... [2019-11-27 23:51:29,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1355a8 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 23:51:29,023 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 23:51:29,025 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2019-11-27 23:51:29,035 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:29,042 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:29,056 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:29,080 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:29,080 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:29,080 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:29,080 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:29,081 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:29,081 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:29,081 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:29,081 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:29,095 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-27 23:51:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:51:29,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:29,101 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:51:29,101 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:29,107 INFO L82 PathProgramCache]: Analyzing trace with hash 30078084, now seen corresponding path program 1 times [2019-11-27 23:51:29,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:29,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379120330] [2019-11-27 23:51:29,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:29,208 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 23:51:29,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379120330] [2019-11-27 23:51:29,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:29,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:51:29,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362493448] [2019-11-27 23:51:29,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:29,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:29,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:29,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:29,234 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-27 23:51:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:29,252 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-27 23:51:29,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:29,254 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-27 23:51:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:29,264 INFO L225 Difference]: With dead ends: 19 [2019-11-27 23:51:29,264 INFO L226 Difference]: Without dead ends: 7 [2019-11-27 23:51:29,268 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 23:51:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-27 23:51:29,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-27 23:51:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-27 23:51:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-27 23:51:29,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-27 23:51:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:29,305 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-27 23:51:29,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-27 23:51:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:51:29,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:29,306 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 23:51:29,307 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash 925774290, now seen corresponding path program 1 times [2019-11-27 23:51:29,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:29,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447478176] [2019-11-27 23:51:29,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:29,369 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:51:29,369 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:29,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:29 BoogieIcfgContainer [2019-11-27 23:51:29,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:29,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:29,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:29,391 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:29,391 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 23:51:29,395 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:51:29,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:29,399 INFO L168 Benchmark]: Toolchain (without parser) took 1085.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -134.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:29,399 INFO L168 Benchmark]: CDTParser took 0.18 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 23:51:29,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.33 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:29,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:29,402 INFO L168 Benchmark]: Boogie Preprocessor took 28.07 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 23:51:29,403 INFO L168 Benchmark]: RCFGBuilder took 240.05 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:29,404 INFO L168 Benchmark]: TraceAbstraction took 372.31 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:29,405 INFO L168 Benchmark]: Witness Printer took 5.48 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. [2019-11-27 23:51:29,410 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 345.33 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 89.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.07 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 240.05 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 372.31 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.48 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: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 [L9] COND TRUE !(cond) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 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=11occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 23:51:31,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:31,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:31,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:31,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:31,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:31,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:31,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:31,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:31,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:31,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:31,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:31,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:31,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:31,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:31,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:31,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:31,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:31,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:31,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:31,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:31,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:31,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:31,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:31,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:31,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:31,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:31,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:31,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:31,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:31,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:31,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:31,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:31,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:31,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:31,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:31,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:31,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:31,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:31,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:31,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:31,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:51:31,464 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:31,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:31,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:31,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:31,466 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:31,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:31,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:31,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:31,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:31,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:31,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:31,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:31,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:51:31,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:51:31,470 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:31,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:31,471 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:31,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:31,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:31,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:31,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:31,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:31,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:31,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:31,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:31,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:31,474 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:51:31,474 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:51:31,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:31,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:51:31,475 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 -> 264bfe6ed9d94f386b1000d33074dec83a5848c5 [2019-11-27 23:51:31,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:31,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:31,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:31,792 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:31,792 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:31,793 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-27 23:51:31,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df5435a0/d02cae119c34457f8fe79338942721e1/FLAG1207928b0 [2019-11-27 23:51:32,290 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:32,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2019-11-27 23:51:32,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df5435a0/d02cae119c34457f8fe79338942721e1/FLAG1207928b0 [2019-11-27 23:51:32,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df5435a0/d02cae119c34457f8fe79338942721e1 [2019-11-27 23:51:32,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:32,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:32,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:32,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:32,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:32,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:32" (1/1) ... [2019-11-27 23:51:32,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff4ef9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:32, skipping insertion in model container [2019-11-27 23:51:32,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:32" (1/1) ... [2019-11-27 23:51:32,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:32,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:32,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:32,957 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:32,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:33,003 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:33,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:33 WrapperNode [2019-11-27 23:51:33,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:33,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:33,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:33,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:33,018 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 23:51:33,029 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 23:51:33,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:33,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:33,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:33,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:33,116 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 23:51:33,116 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 23:51:33,118 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 23:51:33,118 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 23:51:33,124 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 23:51:33,129 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 23:51:33,130 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 23:51:33,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:33,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:33,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:33,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:33,137 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 23:51:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:33,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:37,214 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:37,217 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:51:37,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:37 BoogieIcfgContainer [2019-11-27 23:51:37,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:37,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:37,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:37,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:37,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:32" (1/3) ... [2019-11-27 23:51:37,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2752e286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:37, skipping insertion in model container [2019-11-27 23:51:37,240 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 23:51:37,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2752e286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:37, skipping insertion in model container [2019-11-27 23:51:37,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:37" (3/3) ... [2019-11-27 23:51:37,244 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2019-11-27 23:51:37,260 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:37,269 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:37,305 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:37,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:37,338 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:37,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:37,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:37,339 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:37,339 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:37,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:37,339 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-27 23:51:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 23:51:37,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:37,359 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 23:51:37,360 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:37,364 INFO L82 PathProgramCache]: Analyzing trace with hash 889906919, now seen corresponding path program 1 times [2019-11-27 23:51:37,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:37,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879875298] [2019-11-27 23:51:37,376 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 23:51:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:37,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:51:37,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:37,653 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 23:51:37,654 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:37,657 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 23:51:37,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879875298] [2019-11-27 23:51:37,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:37,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:51:37,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776983617] [2019-11-27 23:51:37,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:37,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:37,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:37,678 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-27 23:51:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:37,692 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-27 23:51:37,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:37,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-27 23:51:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:37,701 INFO L225 Difference]: With dead ends: 20 [2019-11-27 23:51:37,701 INFO L226 Difference]: Without dead ends: 8 [2019-11-27 23:51:37,704 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 23:51:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-27 23:51:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-27 23:51:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-27 23:51:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-27 23:51:37,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-27 23:51:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:37,734 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-27 23:51:37,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-27 23:51:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-27 23:51:37,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:37,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:37,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:51:37,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:37,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2019-11-27 23:51:37,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:37,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473101330] [2019-11-27 23:51:37,949 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 23:51:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:39,028 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:51:39,028 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:39,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:51:39,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:39 BoogieIcfgContainer [2019-11-27 23:51:39,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:39,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:39,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:39,254 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:39,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:37" (3/4) ... [2019-11-27 23:51:39,256 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:51:39,298 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:51:39,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:39,302 INFO L168 Benchmark]: Toolchain (without parser) took 6616.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -111.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:39,302 INFO L168 Benchmark]: CDTParser took 0.19 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 23:51:39,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.42 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 23:51:39,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:39,305 INFO L168 Benchmark]: Boogie Preprocessor took 25.31 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 23:51:39,306 INFO L168 Benchmark]: RCFGBuilder took 4088.60 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:39,307 INFO L168 Benchmark]: TraceAbstraction took 2029.47 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:39,307 INFO L168 Benchmark]: Witness Printer took 45.65 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. [2019-11-27 23:51:39,311 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 314.42 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 102.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.31 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 4088.60 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2029.47 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.65 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: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 [L9] COND TRUE !(cond) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 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=12occurred 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 13 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...