./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer --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 57828c11c74ba018eaf70a217208a01187285749 ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer --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 57828c11c74ba018eaf70a217208a01187285749 ................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-01 18:38:08,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:38:08,328 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:38:08,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:38:08,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:38:08,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:38:08,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:38:08,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:38:08,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:38:08,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:38:08,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:38:08,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:38:08,341 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:38:08,341 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:38:08,342 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:38:08,343 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:38:08,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:38:08,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:38:08,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:38:08,348 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:38:08,348 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:38:08,349 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:38:08,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:38:08,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:38:08,351 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:38:08,352 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:38:08,353 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:38:08,353 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:38:08,354 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:38:08,355 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:38:08,355 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:38:08,356 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:38:08,356 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:38:08,356 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:38:08,357 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:38:08,358 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:38:08,358 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 18:38:08,367 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:38:08,367 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:38:08,368 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:38:08,368 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:38:08,368 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:38:08,368 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:38:08,369 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 18:38:08,369 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 18:38:08,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:38:08,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:38:08,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:38:08,371 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:38:08,371 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 18:38:08,371 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 18:38:08,371 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:38:08,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 18:38:08,371 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer 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 -> 57828c11c74ba018eaf70a217208a01187285749 [2018-12-01 18:38:08,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:38:08,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:38:08,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:38:08,401 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:38:08,401 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:38:08,402 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-12-01 18:38:08,437 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/dfa3c4a8b/cec80e5613db4fd9bdcf884870f6a4c5/FLAG82ef3e868 [2018-12-01 18:38:08,865 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:38:08,865 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-12-01 18:38:08,868 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/dfa3c4a8b/cec80e5613db4fd9bdcf884870f6a4c5/FLAG82ef3e868 [2018-12-01 18:38:08,876 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/dfa3c4a8b/cec80e5613db4fd9bdcf884870f6a4c5 [2018-12-01 18:38:08,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:38:08,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:38:08,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:38:08,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:38:08,881 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:38:08,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:08,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf44b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08, skipping insertion in model container [2018-12-01 18:38:08,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:08,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:38:08,895 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:38:08,977 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:38:08,979 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:38:08,989 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:38:08,996 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:38:08,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08 WrapperNode [2018-12-01 18:38:08,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:38:08,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:38:08,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:38:08,997 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:38:09,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:38:09,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:38:09,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:38:09,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:38:09,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... [2018-12-01 18:38:09,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:38:09,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:38:09,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:38:09,019 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:38:09,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/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 [2018-12-01 18:38:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:38:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:38:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:38:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:38:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:38:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:38:09,152 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:38:09,152 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-01 18:38:09,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:38:09 BoogieIcfgContainer [2018-12-01 18:38:09,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:38:09,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:38:09,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:38:09,155 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:38:09,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:38:08" (1/3) ... [2018-12-01 18:38:09,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b18424d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:38:09, skipping insertion in model container [2018-12-01 18:38:09,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:08" (2/3) ... [2018-12-01 18:38:09,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b18424d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:38:09, skipping insertion in model container [2018-12-01 18:38:09,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:38:09" (3/3) ... [2018-12-01 18:38:09,157 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3_false-unreach-call_true-termination.i [2018-12-01 18:38:09,163 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:38:09,167 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 18:38:09,178 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 18:38:09,201 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:38:09,201 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:38:09,201 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 18:38:09,201 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:38:09,201 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:38:09,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:38:09,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:38:09,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:38:09,202 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:38:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-01 18:38:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-01 18:38:09,215 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:38:09,215 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:38:09,217 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:38:09,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:38:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-01 18:38:09,221 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:38:09,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:38:09,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:38:09,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:38:09,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:38:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:38:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:38:09,284 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 18:38:09,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 06:38:09 BoogieIcfgContainer [2018-12-01 18:38:09,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 18:38:09,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:38:09,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:38:09,298 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:38:09,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:38:09" (3/4) ... [2018-12-01 18:38:09,300 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 18:38:09,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:38:09,301 INFO L168 Benchmark]: Toolchain (without parser) took 423.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:38:09,302 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:38:09,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 117.92 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. [2018-12-01 18:38:09,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:38:09,303 INFO L168 Benchmark]: Boogie Preprocessor took 10.08 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:38:09,303 INFO L168 Benchmark]: RCFGBuilder took 133.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:38:09,304 INFO L168 Benchmark]: TraceAbstraction took 144.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-01 18:38:09,304 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:38:09,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 117.92 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 11.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.08 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 133.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 144.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-635dfa2 [2018-12-01 18:38:10,591 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:38:10,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:38:10,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:38:10,598 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:38:10,599 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:38:10,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:38:10,600 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:38:10,601 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:38:10,601 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:38:10,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:38:10,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:38:10,603 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:38:10,603 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:38:10,604 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:38:10,604 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:38:10,605 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:38:10,605 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:38:10,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:38:10,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:38:10,608 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:38:10,608 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:38:10,609 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:38:10,609 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:38:10,610 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:38:10,610 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:38:10,611 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:38:10,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:38:10,611 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:38:10,612 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:38:10,612 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:38:10,612 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:38:10,613 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:38:10,613 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:38:10,613 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:38:10,614 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:38:10,614 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 18:38:10,621 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:38:10,621 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:38:10,622 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:38:10,622 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:38:10,622 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:38:10,622 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:38:10,622 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:38:10,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 18:38:10,623 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 18:38:10,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:38:10,624 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 18:38:10,624 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:38:10,624 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 18:38:10,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:38:10,624 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:38:10,624 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:38:10,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 18:38:10,625 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer 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 -> 57828c11c74ba018eaf70a217208a01187285749 [2018-12-01 18:38:10,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:38:10,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:38:10,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:38:10,661 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:38:10,661 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:38:10,662 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-12-01 18:38:10,701 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/a5bf3641a/8771bc3e7b2b496e99827ecd79807f66/FLAG773b4c7fd [2018-12-01 18:38:11,099 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:38:11,100 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/sv-benchmarks/c/floats-cdfpl/square_3_false-unreach-call_true-termination.i [2018-12-01 18:38:11,103 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/a5bf3641a/8771bc3e7b2b496e99827ecd79807f66/FLAG773b4c7fd [2018-12-01 18:38:11,111 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/data/a5bf3641a/8771bc3e7b2b496e99827ecd79807f66 [2018-12-01 18:38:11,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:38:11,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:38:11,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:38:11,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:38:11,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:38:11,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b45ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11, skipping insertion in model container [2018-12-01 18:38:11,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:38:11,132 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:38:11,218 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:38:11,222 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:38:11,232 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:38:11,240 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:38:11,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11 WrapperNode [2018-12-01 18:38:11,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:38:11,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:38:11,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:38:11,241 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:38:11,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:38:11,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:38:11,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:38:11,255 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:38:11,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... [2018-12-01 18:38:11,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:38:11,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:38:11,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:38:11,269 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:38:11,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/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 [2018-12-01 18:38:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:38:11,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:38:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:38:11,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:38:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:38:11,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:38:13,452 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:38:13,453 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-01 18:38:13,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:38:13 BoogieIcfgContainer [2018-12-01 18:38:13,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:38:13,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:38:13,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:38:13,455 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:38:13,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:38:11" (1/3) ... [2018-12-01 18:38:13,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:38:13, skipping insertion in model container [2018-12-01 18:38:13,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:38:11" (2/3) ... [2018-12-01 18:38:13,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:38:13, skipping insertion in model container [2018-12-01 18:38:13,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:38:13" (3/3) ... [2018-12-01 18:38:13,458 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3_false-unreach-call_true-termination.i [2018-12-01 18:38:13,464 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:38:13,468 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 18:38:13,476 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 18:38:13,493 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:38:13,493 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:38:13,493 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 18:38:13,493 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:38:13,493 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:38:13,493 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:38:13,493 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:38:13,494 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:38:13,494 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:38:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-01 18:38:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-01 18:38:13,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:38:13,506 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:38:13,508 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:38:13,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:38:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-01 18:38:13,513 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 18:38:13,513 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/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 [2018-12-01 18:38:13,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:40:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:40:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:40:57,316 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 18:40:57,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 06:40:57 BoogieIcfgContainer [2018-12-01 18:40:57,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 18:40:57,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:40:57,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:40:57,334 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:40:57,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:38:13" (3/4) ... [2018-12-01 18:40:57,336 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 18:40:57,359 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bfb88d4b-5ec4-4f94-bc5b-fbee870173a2/bin-2019/uautomizer/witness.graphml [2018-12-01 18:40:57,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:40:57,360 INFO L168 Benchmark]: Toolchain (without parser) took 166246.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -129.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:40:57,361 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:40:57,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.93 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 18:40:57,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.33 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:40:57,362 INFO L168 Benchmark]: Boogie Preprocessor took 13.83 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 18:40:57,362 INFO L168 Benchmark]: RCFGBuilder took 2184.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:40:57,362 INFO L168 Benchmark]: TraceAbstraction took 163880.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:40:57,363 INFO L168 Benchmark]: Witness Printer took 25.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:40:57,364 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.93 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 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 13.33 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.83 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2184.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 163880.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * Witness Printer took 25.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L14] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L15] __VERIFIER_error() VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 163.8s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 147.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...