./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/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 8df1e49a9eb646d8ac7821b53cc17b33c788acf9 .................................................................................................................................................................................................................................................................................... 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_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/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 8df1e49a9eb646d8ac7821b53cc17b33c788acf9 ................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:41:39,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:41:39,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:41:39,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:41:39,497 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:41:39,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:41:39,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:41:39,500 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:41:39,501 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:41:39,501 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:41:39,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:41:39,503 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:41:39,503 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:41:39,504 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:41:39,505 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:41:39,505 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:41:39,506 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:41:39,508 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:41:39,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:41:39,510 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:41:39,511 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:41:39,512 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:41:39,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:41:39,513 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:41:39,513 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:41:39,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:41:39,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:41:39,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:41:39,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:41:39,517 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:41:39,517 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:41:39,517 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:41:39,517 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:41:39,518 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:41:39,519 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:41:39,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:41:39,520 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:41:39,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:41:39,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:41:39,531 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:41:39,531 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:41:39,531 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:41:39,531 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:41:39,531 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:41:39,531 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:41:39,531 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:41:39,532 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:41:39,532 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:41:39,532 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:41:39,532 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:41:39,532 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:41:39,533 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:41:39,534 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:41:39,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:41:39,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:41:39,536 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:41:39,536 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:41:39,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:41:39,536 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:41:39,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:41:39,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:41:39,537 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:41:39,537 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:41:39,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:41:39,537 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:41:39,537 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_8afcd036-488e-45c6-8063-9ae9c1a95597/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 -> 8df1e49a9eb646d8ac7821b53cc17b33c788acf9 [2018-10-26 21:41:39,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:41:39,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:41:39,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:41:39,592 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:41:39,592 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:41:39,593 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c [2018-10-26 21:41:39,637 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/e0a8dc9ab/d57aef2bec6a4de19af6cc567dd3187a/FLAG9651ddc04 [2018-10-26 21:41:39,967 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:41:39,967 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c [2018-10-26 21:41:39,972 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/e0a8dc9ab/d57aef2bec6a4de19af6cc567dd3187a/FLAG9651ddc04 [2018-10-26 21:41:39,981 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/e0a8dc9ab/d57aef2bec6a4de19af6cc567dd3187a [2018-10-26 21:41:39,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:41:39,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:41:39,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:41:39,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:41:39,989 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:41:39,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:41:39" (1/1) ... [2018-10-26 21:41:39,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf157c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:39, skipping insertion in model container [2018-10-26 21:41:39,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:41:39" (1/1) ... [2018-10-26 21:41:40,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:41:40,017 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:41:40,135 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:41:40,139 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:41:40,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:41:40,162 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:41:40,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40 WrapperNode [2018-10-26 21:41:40,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:41:40,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:41:40,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:41:40,164 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:41:40,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:41:40,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:41:40,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:41:40,181 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:41:40,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... [2018-10-26 21:41:40,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:41:40,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:41:40,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:41:40,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:41:40,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/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 [2018-10-26 21:41:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN [2018-10-26 21:41:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN [2018-10-26 21:41:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:41:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:41:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:41:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:41:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:41:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:41:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2018-10-26 21:41:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2018-10-26 21:41:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 21:41:40,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 21:41:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure PADE_2_2 [2018-10-26 21:41:40,293 INFO L138 BoogieDeclarations]: Found implementation of procedure PADE_2_2 [2018-10-26 21:41:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2018-10-26 21:41:40,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2018-10-26 21:41:40,707 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:41:40,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:41:40 BoogieIcfgContainer [2018-10-26 21:41:40,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:41:40,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:41:40,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:41:40,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:41:40,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:41:39" (1/3) ... [2018-10-26 21:41:40,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716088c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:41:40, skipping insertion in model container [2018-10-26 21:41:40,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:40" (2/3) ... [2018-10-26 21:41:40,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716088c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:41:40, skipping insertion in model container [2018-10-26 21:41:40,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:41:40" (3/3) ... [2018-10-26 21:41:40,726 INFO L112 eAbstractionObserver]: Analyzing ICFG arctan_Pade_true-unreach-call_true-termination.c [2018-10-26 21:41:40,737 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:41:40,744 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:41:40,760 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:41:40,796 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:41:40,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:41:40,797 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:41:40,797 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:41:40,797 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:41:40,797 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:41:40,797 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:41:40,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:41:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-10-26 21:41:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:41:40,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:41:40,823 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:41:40,826 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:41:40,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:41:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2056193066, now seen corresponding path program 1 times [2018-10-26 21:41:40,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:41:40,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:41:40,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:41:40,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:41:40,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:41:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:41:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:41:40,960 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:41:40,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:41:40 BoogieIcfgContainer [2018-10-26 21:41:40,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:41:40,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:41:40,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:41:40,989 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:41:40,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:41:40" (3/4) ... [2018-10-26 21:41:40,995 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 21:41:40,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:41:40,996 INFO L168 Benchmark]: Toolchain (without parser) took 1011.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:41:40,997 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:41:40,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.75 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 943.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:41:41,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.16 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:41:41,002 INFO L168 Benchmark]: Boogie Preprocessor took 13.88 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 938.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:41:41,003 INFO L168 Benchmark]: RCFGBuilder took 513.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 938.3 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:41:41,004 INFO L168 Benchmark]: TraceAbstraction took 280.46 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:41:41,004 INFO L168 Benchmark]: Witness Printer took 5.89 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. [2018-10-26 21:41:41,010 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.75 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 943.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.16 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.88 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 938.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 513.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 938.3 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 280.46 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.89 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: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 30, overapproximation of someUnaryDOUBLEoperation at line 36. Possible FailurePath: [L15] const double Pi=3.141592653589793238; VAL [\old(Pi)=8, Pi=1570796326794896619/500000000000000000] [L42] double a, r; [L44] a = __VERIFIER_nondet_double() [L47] CALL, EXPR ARCTAN(a) VAL [\old(x)=7, Pi=1570796326794896619/500000000000000000] [L36] COND TRUE x < 0 VAL [\old(x)=7, Pi=1570796326794896619/500000000000000000, x=7] [L36] CALL, EXPR ARCTAN_POS(-x) VAL [Pi=1570796326794896619/500000000000000000] [L30] COND TRUE x > 1. VAL [\old(x)=5, Pi=1570796326794896619/500000000000000000, x=5] [L30] CALL, EXPR ARCTAN_0_1(1. / x) VAL [Pi=1570796326794896619/500000000000000000] [L25] CALL, EXPR PADE_2_2(x) VAL [\old(x)=3, Pi=1570796326794896619/500000000000000000] [L19] double x_2 = x*x; [L20] RET return 1. - x_2 / (3. + 9./5.*x_2); VAL [\old(x)=3, Pi=1570796326794896619/500000000000000000, x=3] [L25] EXPR PADE_2_2(x) VAL [\old(x)=3, PADE_2_2(x)=4, Pi=1570796326794896619/500000000000000000, x=3] [L25] RET return x*PADE_2_2(x); [L30] EXPR ARCTAN_0_1(1. / x) VAL [\old(x)=5, ARCTAN_0_1(1. / x)=6, Pi=1570796326794896619/500000000000000000, x=5] [L30] RET return Pi / 2. - ARCTAN_0_1(1. / x); [L36] EXPR ARCTAN_POS(-x) VAL [\old(x)=7, ARCTAN_POS(-x)=9, Pi=1570796326794896619/500000000000000000, x=7] [L36] RET return -ARCTAN_POS(-x); [L47] EXPR ARCTAN(a) VAL [a=7, ARCTAN(a)=2, Pi=1570796326794896619/500000000000000000] [L47] r = ARCTAN(a) [L49] CALL __VERIFIER_assert(r >= -1.571 && r <= 1.571) VAL [\old(cond)=0, Pi=1570796326794896619/500000000000000000] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] [L12] __VERIFIER_error() VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:41:42,843 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:41:42,845 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:41:42,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:41:42,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:41:42,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:41:42,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:41:42,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:41:42,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:41:42,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:41:42,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:41:42,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:41:42,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:41:42,861 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:41:42,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:41:42,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:41:42,864 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:41:42,865 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:41:42,867 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:41:42,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:41:42,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:41:42,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:41:42,872 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:41:42,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:41:42,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:41:42,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:41:42,874 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:41:42,875 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:41:42,876 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:41:42,876 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:41:42,877 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:41:42,877 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:41:42,877 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:41:42,877 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:41:42,879 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:41:42,880 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:41:42,881 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 21:41:42,893 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:41:42,893 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:41:42,894 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:41:42,894 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:41:42,894 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:41:42,894 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:41:42,894 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:41:42,895 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:41:42,895 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:41:42,895 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:41:42,895 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:41:42,895 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:41:42,896 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:41:42,897 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:41:42,897 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:41:42,897 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:41:42,897 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:41:42,897 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:41:42,897 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:41:42,897 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:41:42,898 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:41:42,898 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:41:42,898 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 21:41:42,900 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:41:42,901 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 21:41:42,901 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 21:41:42,901 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_8afcd036-488e-45c6-8063-9ae9c1a95597/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 -> 8df1e49a9eb646d8ac7821b53cc17b33c788acf9 [2018-10-26 21:41:42,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:41:42,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:41:42,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:41:42,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:41:42,952 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:41:42,954 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c [2018-10-26 21:41:43,009 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/b9557deeb/b51aeacb8a3443b58accd26d8de75237/FLAG1f97ab653 [2018-10-26 21:41:43,388 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:41:43,388 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/sv-benchmarks/c/float-benchs/arctan_Pade_true-unreach-call_true-termination.c [2018-10-26 21:41:43,393 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/b9557deeb/b51aeacb8a3443b58accd26d8de75237/FLAG1f97ab653 [2018-10-26 21:41:43,404 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/bin-2019/utaipan/data/b9557deeb/b51aeacb8a3443b58accd26d8de75237 [2018-10-26 21:41:43,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:41:43,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:41:43,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:41:43,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:41:43,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:41:43,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8f327e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43, skipping insertion in model container [2018-10-26 21:41:43,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:41:43,437 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:41:43,559 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:41:43,564 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:41:43,580 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:41:43,593 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:41:43,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43 WrapperNode [2018-10-26 21:41:43,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:41:43,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:41:43,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:41:43,595 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:41:43,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:41:43,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:41:43,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:41:43,615 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:41:43,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... [2018-10-26 21:41:43,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:41:43,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:41:43,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:41:43,638 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:41:43,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/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 [2018-10-26 21:41:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN [2018-10-26 21:41:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN [2018-10-26 21:41:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:41:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:41:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:41:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:41:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:41:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:41:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2018-10-26 21:41:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2018-10-26 21:41:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 21:41:43,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 21:41:43,695 INFO L130 BoogieDeclarations]: Found specification of procedure PADE_2_2 [2018-10-26 21:41:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure PADE_2_2 [2018-10-26 21:41:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2018-10-26 21:41:43,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2018-10-26 21:41:47,260 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:41:47,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:41:47 BoogieIcfgContainer [2018-10-26 21:41:47,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:41:47,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:41:47,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:41:47,268 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:41:47,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:41:43" (1/3) ... [2018-10-26 21:41:47,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106eeceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:41:47, skipping insertion in model container [2018-10-26 21:41:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:41:43" (2/3) ... [2018-10-26 21:41:47,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106eeceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:41:47, skipping insertion in model container [2018-10-26 21:41:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:41:47" (3/3) ... [2018-10-26 21:41:47,271 INFO L112 eAbstractionObserver]: Analyzing ICFG arctan_Pade_true-unreach-call_true-termination.c [2018-10-26 21:41:47,281 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:41:47,290 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:41:47,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:41:47,325 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:41:47,325 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:41:47,325 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:41:47,325 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:41:47,326 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:41:47,326 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:41:47,326 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:41:47,326 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:41:47,326 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:41:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-10-26 21:41:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:41:47,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:41:47,345 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:41:47,347 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:41:47,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:41:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash -2056193066, now seen corresponding path program 1 times [2018-10-26 21:41:47,354 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:41:47,354 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8afcd036-488e-45c6-8063-9ae9c1a95597/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 [2018-10-26 21:41:47,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:41:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:41:59,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:42:02,643 WARN L832 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (= |c_PADE_2_2_#res| (fp.sub RNE ((_ to_fp 11 53) RNE 1.0) (let ((.cse0 (fp.mul RNE |c_PADE_2_2_#in~x| |c_PADE_2_2_#in~x|))) (fp.div RNE .cse0 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse0))))))) is different from false [2018-10-26 21:42:04,987 WARN L832 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (= c_ARCTAN_0_1_~x |c_ARCTAN_0_1_#in~x|) (= (fp.sub RNE ((_ to_fp 11 53) RNE 1.0) (let ((.cse0 (fp.mul RNE c_ARCTAN_0_1_~x c_ARCTAN_0_1_~x))) (fp.div RNE .cse0 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse0))))) |c_ARCTAN_0_1_#t~ret0|)) is different from false [2018-10-26 21:42:07,382 WARN L832 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.mul RNE |c_ARCTAN_0_1_#in~x| (fp.sub RNE ((_ to_fp 11 53) RNE 1.0) (let ((.cse0 (fp.mul RNE |c_ARCTAN_0_1_#in~x| |c_ARCTAN_0_1_#in~x|))) (fp.div RNE .cse0 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse0)))))) |c_ARCTAN_0_1_#res|)) is different from false [2018-10-26 21:42:10,083 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (= |c_ARCTAN_POS_#t~ret1| (let ((.cse0 (fp.div RNE .cse1 |c_ARCTAN_POS_#in~x|))) (fp.mul RNE .cse0 (fp.sub RNE .cse1 (let ((.cse2 (fp.mul RNE .cse0 .cse0))) (fp.div RNE .cse2 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse2)))))))) (fp.gt |c_ARCTAN_POS_#in~x| .cse1))) is different from false [2018-10-26 21:42:12,745 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (= |c_ARCTAN_POS_#res| (fp.sub RNE (fp.div RNE c_~Pi~0 ((_ to_fp 11 53) RNE 2.0)) (let ((.cse0 (fp.div RNE .cse1 |c_ARCTAN_POS_#in~x|))) (fp.mul RNE .cse0 (fp.sub RNE .cse1 (let ((.cse2 (fp.mul RNE .cse0 .cse0))) (fp.div RNE .cse2 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse2))))))))) (fp.gt |c_ARCTAN_POS_#in~x| .cse1))) is different from false [2018-10-26 21:42:15,491 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0)) (.cse0 (fp.neg |c_ARCTAN_#in~x|))) (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (fp.gt .cse0 .cse1) (fp.lt |c_ARCTAN_#in~x| ((_ to_fp 11 53) RNE (_ bv0 32))) (= (fp.sub RNE (fp.div RNE c_~Pi~0 ((_ to_fp 11 53) RNE 2.0)) (let ((.cse2 (fp.div RNE .cse1 .cse0))) (fp.mul RNE .cse2 (fp.sub RNE .cse1 (let ((.cse3 (fp.mul RNE .cse2 .cse2))) (fp.div RNE .cse3 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse3)))))))) |c_ARCTAN_#t~ret3|))) is different from false [2018-10-26 21:42:18,255 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.neg |c_ARCTAN_#in~x|)) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (= c_~Pi~0 ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0))) (= |c_ARCTAN_#res| (fp.neg (fp.sub RNE (fp.div RNE c_~Pi~0 ((_ to_fp 11 53) RNE 2.0)) (let ((.cse0 (fp.div RNE .cse1 .cse3))) (fp.mul RNE .cse0 (fp.sub RNE .cse1 (let ((.cse2 (fp.mul RNE .cse0 .cse0))) (fp.div RNE .cse2 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse2)))))))))) (fp.gt .cse3 .cse1) (fp.lt |c_ARCTAN_#in~x| ((_ to_fp 11 53) RNE (_ bv0 32))))) is different from false [2018-10-26 21:42:21,007 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) RNE 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) (.cse3 (fp.neg main_~a~0)) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (= |c_main_#t~ret6| (fp.neg (fp.sub RNE (fp.div RNE ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) RNE 2.0)) (let ((.cse0 (fp.div RNE .cse1 .cse3))) (fp.mul RNE .cse0 (fp.sub RNE .cse1 (let ((.cse2 (fp.mul RNE .cse0 .cse0))) (fp.div RNE .cse2 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse2)))))))))) (fp.leq main_~a~0 .cse4) (fp.geq main_~a~0 (fp.neg .cse4)) (fp.gt .cse3 .cse1) (fp.lt main_~a~0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from false [2018-10-26 21:42:23,585 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) RNE 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) (.cse3 (fp.neg main_~a~0)) (.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (= |c_main_#t~ret6| (fp.neg (fp.sub RNE (fp.div RNE ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) RNE 2.0)) (let ((.cse0 (fp.div RNE .cse1 .cse3))) (fp.mul RNE .cse0 (fp.sub RNE .cse1 (let ((.cse2 (fp.mul RNE .cse0 .cse0))) (fp.div RNE .cse2 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse2)))))))))) (fp.leq main_~a~0 .cse4) (fp.geq main_~a~0 (fp.neg .cse4)) (fp.gt .cse3 .cse1) (fp.lt main_~a~0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-10-26 21:42:26,286 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) (.cse2 ((_ to_fp 11 53) RNE 1.0)) (.cse1 (fp.neg main_~a~0))) (and (fp.leq main_~a~0 .cse0) (fp.geq main_~a~0 (fp.neg .cse0)) (fp.gt .cse1 .cse2) (fp.lt main_~a~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (= c_main_~r~0 (fp.neg (fp.sub RNE (fp.div RNE ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) RNE 2.0)) (let ((.cse3 (fp.div RNE .cse2 .cse1))) (fp.mul RNE .cse3 (fp.sub RNE .cse2 (let ((.cse4 (fp.mul RNE .cse3 .cse3))) (fp.div RNE .cse4 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse4))))))))))))) is different from false [2018-10-26 21:42:28,885 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) (.cse2 ((_ to_fp 11 53) RNE 1.0)) (.cse1 (fp.neg main_~a~0))) (and (fp.leq main_~a~0 .cse0) (fp.geq main_~a~0 (fp.neg .cse0)) (fp.gt .cse1 .cse2) (fp.lt main_~a~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (= c_main_~r~0 (fp.neg (fp.sub RNE (fp.div RNE ((_ to_fp 11 53) RNE (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) RNE 2.0)) (let ((.cse3 (fp.div RNE .cse2 .cse1))) (fp.mul RNE .cse3 (fp.sub RNE .cse2 (let ((.cse4 (fp.mul RNE .cse3 .cse3))) (fp.div RNE .cse4 (fp.add RNE ((_ to_fp 11 53) RNE 3.0) (fp.mul RNE (fp.div RNE ((_ to_fp 11 53) RNE 9.0) ((_ to_fp 11 53) RNE 5.0)) .cse4))))))))))))) is different from true [2018-10-26 21:42:50,093 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-10-26 21:42:50,294 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2018-10-26 21:42:50,295 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) 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:234) 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:435) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-10-26 21:42:50,298 INFO L168 Benchmark]: Toolchain (without parser) took 66889.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:50,299 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:42:50,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.39 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 937.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:50,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.53 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:50,301 INFO L168 Benchmark]: Boogie Preprocessor took 21.82 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:42:50,301 INFO L168 Benchmark]: RCFGBuilder took 3627.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -231.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:50,308 INFO L168 Benchmark]: TraceAbstraction took 63031.92 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:50,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.39 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 937.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.53 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.82 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3627.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -231.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 63031.92 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...