./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94c7e44bedb585ab09170efda1a99dc421396ccb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94c7e44bedb585ab09170efda1a99dc421396ccb ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_3 term size 64 --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:40:33,314 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:40:33,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:40:33,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:40:33,325 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:40:33,325 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:40:33,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:40:33,328 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:40:33,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:40:33,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:40:33,331 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:40:33,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:40:33,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:40:33,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:40:33,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:40:33,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:40:33,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:40:33,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:40:33,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:40:33,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:40:33,340 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:40:33,341 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:40:33,343 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:40:33,343 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:40:33,344 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:40:33,345 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:40:33,347 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:40:33,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:40:33,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:40:33,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:40:33,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:40:33,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:40:33,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:40:33,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:40:33,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:40:33,352 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:40:33,352 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:40:33,362 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:40:33,362 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:40:33,363 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:40:33,363 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:40:33,363 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:40:33,363 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:40:33,363 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:40:33,364 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:40:33,364 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:40:33,364 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:40:33,364 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:40:33,364 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:40:33,364 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:40:33,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:40:33,365 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:40:33,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:40:33,365 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:40:33,366 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:40:33,366 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:40:33,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:40:33,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:40:33,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:40:33,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:40:33,368 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:40:33,368 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:40:33,368 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:40:33,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:40:33,369 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:40:33,369 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:40:33,369 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:40:33,369 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:40:33,369 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:40:33,369 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:40:33,370 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:40:33,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:40:33,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:40:33,370 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:40:33,370 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan 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 -> Taipan 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 -> 94c7e44bedb585ab09170efda1a99dc421396ccb [2018-11-18 13:40:33,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:40:33,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:40:33,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:40:33,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:40:33,412 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:40:33,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c [2018-11-18 13:40:33,480 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/60ae92169/40d085948fbe427a84f9c1542c28d005/FLAG9fdc29ec4 [2018-11-18 13:40:33,832 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:40:33,832 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c [2018-11-18 13:40:33,837 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/60ae92169/40d085948fbe427a84f9c1542c28d005/FLAG9fdc29ec4 [2018-11-18 13:40:33,848 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/60ae92169/40d085948fbe427a84f9c1542c28d005 [2018-11-18 13:40:33,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:40:33,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:40:33,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:40:33,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:40:33,856 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:40:33,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:40:33" (1/1) ... [2018-11-18 13:40:33,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e4779c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:33, skipping insertion in model container [2018-11-18 13:40:33,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:40:33" (1/1) ... [2018-11-18 13:40:33,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:40:33,884 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:40:34,033 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:40:34,036 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:40:34,056 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:40:34,074 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:40:34,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34 WrapperNode [2018-11-18 13:40:34,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:40:34,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:40:34,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:40:34,075 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:40:34,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:40:34,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:40:34,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:40:34,099 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:40:34,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... [2018-11-18 13:40:34,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:40:34,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:40:34,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:40:34,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:40:34,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/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 [2018-11-18 13:40:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:40:34,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:40:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 13:40:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:40:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2018-11-18 13:40:34,304 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2018-11-18 13:40:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:40:34,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:40:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 13:40:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:40:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:40:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:40:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:40:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 13:40:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 13:40:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:40:34,709 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:40:34,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:34 BoogieIcfgContainer [2018-11-18 13:40:34,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:40:34,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:40:34,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:40:34,712 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:40:34,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:40:33" (1/3) ... [2018-11-18 13:40:34,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d71b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:40:34, skipping insertion in model container [2018-11-18 13:40:34,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:34" (2/3) ... [2018-11-18 13:40:34,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d71b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:40:34, skipping insertion in model container [2018-11-18 13:40:34,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:34" (3/3) ... [2018-11-18 13:40:34,715 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_Newton_true-unreach-call.c [2018-11-18 13:40:34,723 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:40:34,729 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:40:34,743 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:40:34,770 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:40:34,770 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:40:34,771 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:40:34,771 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:40:34,771 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:40:34,771 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:40:34,771 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:40:34,771 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:40:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-18 13:40:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 13:40:34,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:40:34,788 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:40:34,790 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:40:34,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:40:34,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1869648858, now seen corresponding path program 1 times [2018-11-18 13:40:34,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:40:34,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:40:34,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:40:34,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:40:34,828 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:40:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:40:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:40:34,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:40:34,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:40:34,913 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:40:34,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:40:34,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:40:34,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:40:34,927 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-11-18 13:40:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:40:34,943 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-11-18 13:40:34,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:40:34,944 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-18 13:40:34,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:40:34,952 INFO L225 Difference]: With dead ends: 42 [2018-11-18 13:40:34,952 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 13:40:34,955 INFO L604 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 [2018-11-18 13:40:34,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 13:40:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 13:40:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 13:40:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-18 13:40:34,981 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-11-18 13:40:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:40:34,981 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-18 13:40:34,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:40:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 13:40:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 13:40:34,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:40:34,982 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:40:34,982 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:40:34,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:40:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1432943462, now seen corresponding path program 1 times [2018-11-18 13:40:34,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:40:34,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:40:34,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:40:34,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:40:34,984 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:40:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:40:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:40:35,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:40:35,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:40:35,069 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:40:35,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:40:35,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:40:35,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:40:35,071 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2018-11-18 13:40:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:40:35,087 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-18 13:40:35,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:40:35,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-18 13:40:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:40:35,089 INFO L225 Difference]: With dead ends: 30 [2018-11-18 13:40:35,089 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 13:40:35,089 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:40:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 13:40:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 13:40:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 13:40:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-18 13:40:35,093 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-11-18 13:40:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:40:35,093 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-18 13:40:35,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:40:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-18 13:40:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:40:35,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:40:35,094 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:40:35,094 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:40:35,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:40:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1031220372, now seen corresponding path program 1 times [2018-11-18 13:40:35,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:40:35,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:40:35,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:40:35,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:40:35,096 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:40:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:40:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:40:35,168 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:40:35,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:40:35 BoogieIcfgContainer [2018-11-18 13:40:35,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:40:35,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:40:35,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:40:35,195 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:40:35,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:34" (3/4) ... [2018-11-18 13:40:35,200 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:40:35,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:40:35,200 INFO L168 Benchmark]: Toolchain (without parser) took 1349.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -143.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:40:35,202 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:40:35,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.20 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 947.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:40:35,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.31 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:40:35,203 INFO L168 Benchmark]: Boogie Preprocessor took 123.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -212.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:40:35,204 INFO L168 Benchmark]: RCFGBuilder took 486.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:40:35,205 INFO L168 Benchmark]: TraceAbstraction took 484.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:40:35,205 INFO L168 Benchmark]: Witness Printer took 4.97 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. [2018-11-18 13:40:35,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.20 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 947.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.31 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 123.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -212.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 486.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 484.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.97 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: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 33, overapproximation of to_real at line 26. Possible FailurePath: [L41] double a,r; [L43] a = __VERIFIER_nondet_double() [L46] CALL, EXPR inv(a) VAL [\old(A)=13] [L21] double xi, xsi, temp; [L22] signed int cond, exp; [L23] FCALL union double_int A_u, xi_u; [L24] FCALL A_u.d = A [L25] EXPR, FCALL A_u.i [L25] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L26] FCALL xi_u.d = 1 [L27] FCALL xi_u.i = (((long long)(1023-exp)) << 52) [L28] EXPR, FCALL xi_u.d [L28] xi = xi_u.d [L29] cond = 1 VAL [\old(A)=13, A=13, A_u={12:0}, cond=1, exp=-1024, xi=17, xi_u={16:0}] [L30] COND TRUE \read(cond) [L31] xsi = 2*xi-A*xi*xi [L32] temp = xsi-xi [L33] cond = ((temp > 1e-10) || (temp < -1e-10)) [L34] xi = xsi VAL [\old(A)=13, A=13, A_u={12:0}, cond=0, exp=-1024, xi=10, xi_u={16:0}, xsi=10] [L30] COND FALSE !(\read(cond)) VAL [\old(A)=13, A=13, A_u={12:0}, cond=0, exp=-1024, xi=10, xi_u={16:0}, xsi=10] [L36] return xi; [L36] return xi; [L36] RET return xi; VAL [\old(A)=13, \result=10, A=13, cond=0, exp=-1024, xi=10, xsi=10] [L46] EXPR inv(a) VAL [a=13, inv(a)=10] [L46] r = inv(a) [L48] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 0.1.23-5842f4b [2018-11-18 13:40:37,381 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:40:37,382 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:40:37,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:40:37,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:40:37,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:40:37,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:40:37,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:40:37,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:40:37,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:40:37,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:40:37,398 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:40:37,399 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:40:37,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:40:37,400 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:40:37,401 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:40:37,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:40:37,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:40:37,405 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:40:37,407 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:40:37,407 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:40:37,408 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:40:37,411 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:40:37,411 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:40:37,411 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:40:37,412 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:40:37,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:40:37,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:40:37,414 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:40:37,415 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:40:37,415 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:40:37,416 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:40:37,416 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:40:37,416 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:40:37,417 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:40:37,418 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:40:37,419 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 13:40:37,434 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:40:37,435 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:40:37,435 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:40:37,435 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:40:37,436 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:40:37,436 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:40:37,436 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:40:37,436 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:40:37,436 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:40:37,436 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:40:37,437 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:40:37,437 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:40:37,437 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:40:37,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:40:37,438 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:40:37,438 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:40:37,439 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:40:37,440 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:40:37,440 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:40:37,440 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:40:37,440 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:40:37,440 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:40:37,440 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:40:37,440 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:40:37,441 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:40:37,441 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:40:37,441 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:40:37,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:40:37,441 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:40:37,441 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:40:37,441 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:40:37,444 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 13:40:37,444 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:40:37,444 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:40:37,444 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:40:37,444 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_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan 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 -> Taipan 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 -> 94c7e44bedb585ab09170efda1a99dc421396ccb [2018-11-18 13:40:37,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:40:37,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:40:37,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:40:37,493 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:40:37,493 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:40:37,494 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c [2018-11-18 13:40:37,543 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/beab61ddb/b28f35b608da4d008734e8b010cec4a8/FLAGf2f88dd00 [2018-11-18 13:40:37,899 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:40:37,899 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/sv-benchmarks/c/float-benchs/inv_Newton_true-unreach-call.c [2018-11-18 13:40:37,903 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/beab61ddb/b28f35b608da4d008734e8b010cec4a8/FLAGf2f88dd00 [2018-11-18 13:40:37,912 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/data/beab61ddb/b28f35b608da4d008734e8b010cec4a8 [2018-11-18 13:40:37,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:40:37,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:40:37,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:40:37,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:40:37,924 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:40:37,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:40:37" (1/1) ... [2018-11-18 13:40:37,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795e69c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:37, skipping insertion in model container [2018-11-18 13:40:37,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:40:37" (1/1) ... [2018-11-18 13:40:37,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:40:37,953 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:40:38,115 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:40:38,120 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:40:38,142 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:40:38,165 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:40:38,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38 WrapperNode [2018-11-18 13:40:38,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:40:38,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:40:38,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:40:38,167 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:40:38,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:40:38,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:40:38,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:40:38,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:40:38,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... [2018-11-18 13:40:38,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:40:38,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:40:38,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:40:38,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:40:38,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/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 [2018-11-18 13:40:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 13:40:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 13:40:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:40:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:40:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2018-11-18 13:40:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2018-11-18 13:40:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-18 13:40:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:40:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:40:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:40:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:40:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:40:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2018-11-18 13:40:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 13:40:38,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 13:40:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:40:38,445 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:40:40,559 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:40:40,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:40 BoogieIcfgContainer [2018-11-18 13:40:40,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:40:40,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:40:40,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:40:40,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:40:40,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:40:37" (1/3) ... [2018-11-18 13:40:40,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648334a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:40:40, skipping insertion in model container [2018-11-18 13:40:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:40:38" (2/3) ... [2018-11-18 13:40:40,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648334a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:40:40, skipping insertion in model container [2018-11-18 13:40:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:40:40" (3/3) ... [2018-11-18 13:40:40,567 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_Newton_true-unreach-call.c [2018-11-18 13:40:40,573 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:40:40,582 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:40:40,591 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:40:40,612 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:40:40,613 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:40:40,613 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:40:40,613 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:40:40,613 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:40:40,613 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:40:40,613 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:40:40,614 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:40:40,614 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:40:40,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-18 13:40:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 13:40:40,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:40:40,629 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:40:40,630 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:40:40,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:40:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1869648858, now seen corresponding path program 1 times [2018-11-18 13:40:40,639 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:40:40,640 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/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 [2018-11-18 13:40:40,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:40:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:40:40,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:40:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:40:40,746 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:40:40,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:40:40,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:40:40,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:40:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:40:40,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:40:40,771 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-11-18 13:40:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:40:40,785 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-11-18 13:40:40,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:40:40,786 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-18 13:40:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:40:40,791 INFO L225 Difference]: With dead ends: 42 [2018-11-18 13:40:40,792 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 13:40:40,794 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:40:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 13:40:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 13:40:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 13:40:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-18 13:40:40,827 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-11-18 13:40:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:40:40,827 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-18 13:40:40,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:40:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 13:40:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 13:40:40,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:40:40,828 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:40:40,829 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:40:40,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:40:40,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1432943462, now seen corresponding path program 1 times [2018-11-18 13:40:40,829 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:40:40,830 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/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 [2018-11-18 13:40:40,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:40:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:40:40,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:40:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:40:40,947 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:40:40,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:40:40,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:40:40,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:40:40,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:40:40,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:40:40,958 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2018-11-18 13:40:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:40:43,176 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-18 13:40:43,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:40:43,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-18 13:40:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:40:43,178 INFO L225 Difference]: With dead ends: 30 [2018-11-18 13:40:43,178 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 13:40:43,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:40:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 13:40:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 13:40:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 13:40:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-18 13:40:43,184 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-11-18 13:40:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:40:43,185 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-18 13:40:43,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:40:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-18 13:40:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:40:43,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:40:43,186 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:40:43,186 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:40:43,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:40:43,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1031220372, now seen corresponding path program 1 times [2018-11-18 13:40:43,187 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:40:43,187 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 13:40:43,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:40:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:40:44,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:40:44,704 WARN L180 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2018-11-18 13:40:44,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 102 [2018-11-18 13:40:44,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 93 [2018-11-18 13:40:44,841 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2018-11-18 13:40:44,841 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:40:44,860 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:40:44,884 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:40:44,969 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 13:40:44,969 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 9 variables, input treesize:168, output treesize:57 [2018-11-18 13:40:47,283 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 (= (bvadd c_inv_~cond~0 (_ bv4294967295 32)) (_ bv0 32)))) (or (and (exists ((v_prenex_8 (_ BitVec 32)) (v_prenex_7 (_ BitVec 64))) (and (= (fp ((_ extract 63 63) v_prenex_7) ((_ extract 62 52) v_prenex_7) ((_ extract 51 0) v_prenex_7)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.lt (let ((.cse0 (let ((.cse1 (concat ((_ extract 63 32) v_prenex_7) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg v_prenex_8) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse0) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_inv_#in~A| .cse0) .cse0)) .cse0)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))))) .cse2) (and (exists ((|v_q#valueAsBitvector_2| (_ BitVec 64)) (inv_~exp~0 (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (let ((.cse6 (concat ((_ extract 63 32) |v_q#valueAsBitvector_2|) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg inv_~exp~0) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse6) ((_ extract 62 52) .cse6) ((_ extract 51 0) .cse6))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse5) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_inv_#in~A| .cse5) .cse5)) .cse5))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))) (and (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_2|) ((_ extract 62 52) |v_q#valueAsBitvector_2|) ((_ extract 51 0) |v_q#valueAsBitvector_2|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (not (fp.lt .cse3 (fp.neg .cse4))) (not (fp.gt .cse3 .cse4))))) (= c_inv_~cond~0 (_ bv0 32))) (and .cse2 (exists ((v_prenex_12 (_ BitVec 64)) (v_prenex_13 (_ BitVec 32))) (and (fp.gt (let ((.cse7 (let ((.cse8 (concat ((_ extract 63 32) v_prenex_12) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg v_prenex_13) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse8) ((_ extract 62 52) .cse8) ((_ extract 51 0) .cse8))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse7) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_inv_#in~A| .cse7) .cse7)) .cse7)) ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0))) (= (fp ((_ extract 63 63) v_prenex_12) ((_ extract 62 52) v_prenex_12) ((_ extract 51 0) v_prenex_12)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))))))) is different from false [2018-11-18 13:40:49,388 WARN L832 $PredicateComparison]: unable to prove that (exists ((|v_q#valueAsBitvector_2| (_ BitVec 64)) (inv_~exp~0 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (concat ((_ extract 63 32) |v_q#valueAsBitvector_2|) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg inv_~exp~0) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse3) ((_ extract 62 52) .cse3) ((_ extract 51 0) .cse3))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse2) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_inv_#in~A| .cse2) .cse2)) .cse2))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))) (and (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_2|) ((_ extract 62 52) |v_q#valueAsBitvector_2|) ((_ extract 51 0) |v_q#valueAsBitvector_2|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1))))) is different from false [2018-11-18 13:40:51,423 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_q#valueAsBitvector_2| (_ BitVec 64)) (inv_~exp~0 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (concat ((_ extract 63 32) |v_q#valueAsBitvector_2|) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg inv_~exp~0) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse3) ((_ extract 62 52) .cse3) ((_ extract 51 0) .cse3))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse2) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |c_inv_#in~A| .cse2) .cse2)) .cse2))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))) (and (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_2|) ((_ extract 62 52) |v_q#valueAsBitvector_2|) ((_ extract 51 0) |v_q#valueAsBitvector_2|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (not (fp.lt .cse0 (fp.neg .cse1))) (not (fp.gt .cse0 .cse1))))) is different from true [2018-11-18 13:40:57,617 WARN L832 $PredicateComparison]: unable to prove that (exists ((|v_q#valueAsBitvector_2| (_ BitVec 64)) (inv_~exp~0 (_ BitVec 32)) (main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (concat ((_ extract 63 32) |v_q#valueAsBitvector_2|) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg inv_~exp~0) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse3) ((_ extract 62 52) .cse3) ((_ extract 51 0) .cse3))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse2) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven main_~a~0 .cse2) .cse2)) .cse2))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))) (and (not (fp.gt .cse0 .cse1)) (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_2|) ((_ extract 62 52) |v_q#valueAsBitvector_2|) ((_ extract 51 0) |v_q#valueAsBitvector_2|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.leq main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 30.0)) (fp.geq main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from false [2018-11-18 13:40:59,664 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_q#valueAsBitvector_2| (_ BitVec 64)) (inv_~exp~0 (_ BitVec 32)) (main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (concat ((_ extract 63 32) |v_q#valueAsBitvector_2|) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg inv_~exp~0) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse3) ((_ extract 62 52) .cse3) ((_ extract 51 0) .cse3))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse2) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven main_~a~0 .cse2) .cse2)) .cse2))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))) (and (not (fp.gt .cse0 .cse1)) (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_2|) ((_ extract 62 52) |v_q#valueAsBitvector_2|) ((_ extract 51 0) |v_q#valueAsBitvector_2|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.leq main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 30.0)) (fp.geq main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (not (fp.lt .cse0 (fp.neg .cse1)))))) is different from true [2018-11-18 13:41:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-18 13:41:16,199 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:41:43,232 WARN L180 SmtUtils]: Spent 27.03 s on a formula simplification that was a NOOP. DAG size: 72 [2018-11-18 13:42:10,695 WARN L180 SmtUtils]: Spent 27.46 s on a formula simplification that was a NOOP. DAG size: 70 [2018-11-18 13:42:41,788 WARN L180 SmtUtils]: Spent 31.09 s on a formula simplification that was a NOOP. DAG size: 72 [2018-11-18 13:43:12,493 WARN L180 SmtUtils]: Spent 30.70 s on a formula simplification that was a NOOP. DAG size: 72 [2018-11-18 13:44:01,156 WARN L180 SmtUtils]: Spent 48.65 s on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2018-11-18 13:44:03,413 INFO L303 Elim1Store]: Index analysis took 2256 ms [2018-11-18 13:44:03,414 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 886 treesize of output 838 [2018-11-18 13:44:05,671 INFO L303 Elim1Store]: Index analysis took 2256 ms [2018-11-18 13:44:05,672 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 838 treesize of output 703 [2018-11-18 13:44:21,378 WARN L180 SmtUtils]: Spent 15.70 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-18 13:44:23,634 INFO L303 Elim1Store]: Index analysis took 2254 ms [2018-11-18 13:44:23,634 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 439 treesize of output 358 [2018-11-18 13:44:23,635 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:44:36,362 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:44:49,056 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:05,805 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 13:45:05,805 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 9 variables, input treesize:1258, output treesize:370 [2018-11-18 13:45:08,658 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_q#valueAsBitvector_5| (_ BitVec 64)) (v_inv_~exp~0_5 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (concat ((_ extract 63 32) |v_q#valueAsBitvector_5|) ((_ extract 31 0) (bvshl ((_ sign_extend 32) (bvadd (bvneg v_inv_~exp~0_5) (_ bv1023 32))) ((_ sign_extend 32) (_ bv52 32))))))) (fp ((_ extract 63 63) .cse3) ((_ extract 62 52) .cse3) ((_ extract 51 0) .cse3))))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse2) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven c_main_~a~0 .cse2) .cse2)) .cse2))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0)))) (or (not (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_5|) ((_ extract 62 52) |v_q#valueAsBitvector_5|) ((_ extract 51 0) |v_q#valueAsBitvector_5|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.lt .cse0 (fp.neg .cse1)) (fp.gt .cse0 .cse1)))) is different from true [2018-11-18 13:45:08,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:08,673 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d3b64d63-a6c4-4e01-89e8-0ceb132c0061/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:45:08,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:08,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:10,136 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-11-18 13:45:10,221 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:45:10,221 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:45:10,222 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:45:10,223 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:45:10,268 INFO L303 Elim1Store]: Index analysis took 130 ms [2018-11-18 13:45:10,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 166 treesize of output 179 [2018-11-18 13:45:11,421 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2018-11-18 13:45:11,438 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:45:11,448 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:45:11,675 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:45:11,676 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_3 term size 64 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-18 13:45:11,679 INFO L168 Benchmark]: Toolchain (without parser) took 273763.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 953.2 MB in the beginning and 930.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 146.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:11,680 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:45:11,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:11,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.42 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:45:11,681 INFO L168 Benchmark]: Boogie Preprocessor took 30.38 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:45:11,681 INFO L168 Benchmark]: RCFGBuilder took 2337.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:11,681 INFO L168 Benchmark]: TraceAbstraction took 271117.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.2 MB in the end (delta: 163.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:11,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.42 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.38 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2337.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 271117.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.2 MB in the end (delta: 163.8 MB). Peak memory consumption was 163.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_3 term size 64 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_3 term size 64: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...